{"id":30107,"date":"2023-08-24T23:29:50","date_gmt":"2023-10-12T16:17:08","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/"},"modified":"2025-08-12T17:35:40","modified_gmt":"2025-08-12T09:35:40","slug":"%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/","title":{"rendered":"\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f"},"content":{"rendered":"

\u9996\u5148\u8fd9\u662fPHP5\u9ad8\u7ea7\u8003\u8bd5\/\u51c6\u9ad8\u7ea7\u8003\u8bd5\u603b\u7ed3\u7684\u4e00\u90e8\u5206\uff0c\u662f\u5173\u4e8ePHP\u51fd\u6570\u7684\u9010\u6b65\u89e3\u91ca\u7684\u6587\u7ae0\u3002
\n\u8003\u8bd5\u5bf9\u8c61\u662fPHP5\uff0c\u4f46\u662f\u5185\u5bb9\u662f\u901a\u7528\u7684\uff0c\u53ef\u4ee5\u9002\u7528\u4e8ePHP7\u5de6\u53f3\u3002
\n\u867d\u7136\u662f\u521d\u5b66\u8005\u5411\u7684\u5185\u5bb9\uff0c\u4f46\u662f\u5982\u679c\u5bf9\u7b97\u672f\u8fd0\u7b97\u3001echo\u548cif\u8bed\u53e5\u7b49\u6709\u4e00\u5b9a\u7406\u89e3\uff0c\u9605\u8bfb\u8d77\u6765\u4f1a\u66f4\u5bb9\u6613\u3002\u5982\u679c\u5185\u5bb9\u6709\u9519\u8bef\uff0c\u8bf7\u6307\u6b63\u3002
\n\u6b64\u5916\uff0c\u9884\u8ba12021\u5e74\u79cb\u5b63\u5c06\u5f00\u59cb\u8fdb\u884cPHP8\u6280\u672f\u8ba4\u8bc1\u9ad8\u7ea7\u8003\u8bd5\uff0c\u8bf7\u901a\u8fc7\u5b98\u65b9\u7f51\u9875\u83b7\u53d6\u6700\u65b0\u4fe1\u606f\u3002<\/p>\n

\u51fd\u6570\u7684\u5b9a\u4e49\u662f\u51fd\u6570\u662f\u4e00\u6bb5\u5904\u7406\u903b\u8f91\u7684\u4ee3\u7801\u5757\uff0c\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u7a0b\u5e8f\u5355\u5143\u3002
\n\u51fd\u6570\u53ef\u4ee5\u88ab\u91cd\u590d\u5229\u7528\uff0c\u5e76\u4e14\u53ea\u9700\u8981\u7ed9\u5b83\u8d77\u4e00\u4e2a\u540d\u5b57\uff0c\u4e0b\u6b21\u4f7f\u7528\u65f6\u53ea\u9700\u6839\u636e\u540d\u5b57\u8fdb\u884c\u8c03\u7528\uff0c\u56e0\u6b64\u53ef\u4ee5\u7528\u7b80\u77ed\u7684\u63cf\u8ff0\u6765\u91cd\u590d\u4f7f\u7528\u76f8\u540c\u7684\u903b\u8f91\u3002<\/p>\n

\u5982\u4f55\u64b0\u5199\u51fd\u6570\u5728\u4e2d\u6587\u4e2d\uff0c\u53ef\u4ee5\u8fd9\u6837\u6765\u8868\u8fbe\uff1a”\u6309\u7167 `function \u540d\u79f0() {}` \u7684\u683c\u5f0f\u7f16\u5199\uff0c\u5e76\u5728 `{}` \u4e2d\u653e\u5165\u5904\u7406\u5185\u5bb9\u3002\u5728PHP\u4e2d\uff0c\u901a\u5e38\u5728\u884c\u7684\u7ed3\u5c3e\u52a0\u4e0a\u5206\u53f7\uff0c\u4f46\u5728\u51fd\u6570\u7684 `{}` \u540e\u9762\u4e0d\u9700\u8981\u5206\u53f7\u3002”<\/p>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    \/\/ \u4f55\u3089\u304b\u306e<\/span>\r\n    \/\/ \u51e6\u7406\u3092<\/span>\r\n    \/\/ \u66f8\u304f<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
functionName<\/span>();<\/span>  \/\/ \u3053\u306e1\u884c\u3060\u3051\u3067\u2191\u306e\u95a2\u6570\uff08\u51e6\u7406\u306e\u307e\u3068\u307e\u308a\uff09\u3092\u5b9f\u884c\u3067\u304d\u308b<\/span>\r\n<\/code><\/pre>\n
\u30d1\u30e9\u30e1\u30fc\u30bf\uff08\u4eee\u5f15\u6570\uff09\u3068\u8fd4\u308a\u5024\u5728\u51fd\u6570\u4e2d\uff0c\u63a5\u53d7\u8f93\u5165\u7684\u53d8\u91cf\u79f0\u4e3a\u53c2\u6570\uff08\u5f62\u53c2\uff09\uff0c\u6765\u81ea\u51fd\u6570\u7684\u8f93\u51fa\u79f0\u4e3a\u8fd4\u56de\u503c\u3002
\n\u53c2\u6570\u53ef\u4ee5\u5728\u5706\u62ec\u53f7\u4e2d\u5199\u5165\uff0c\u4ee5\u4fbf\u5728\u82b1\u62ec\u53f7\u4e2d\u4f7f\u7528\uff0c\u5982\u679c\u5728\u5706\u62ec\u53f7\u4e2d\u4e0d\u5199\u53c2\u6570\u5e76\u5c1d\u8bd5\u4f7f\u7528\u5176\u503c\uff0c\u5219\u4f1a\u51fa\u73b0\u9519\u8bef\u3002
\n\u8fd4\u56de\u503c\u901a\u5e38\u79f0\u4e3a\u8fd4\u56de\u503c\u6216\u8fd4\u56de\u7b49\uff0c\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a return $val \u7684\u65b9\u5f0f\u8fdb\u884c\uff0c\u6839\u636e\u51fd\u6570\u7684\u8bbe\u8ba1\u53ef\u80fd\u4e5f\u6709\u6ca1\u6709\u8fd4\u56de\u503c\u7684\u60c5\u51b5\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>$num<\/span>){<\/span> \/\/ \u2190\u3053\u306e\u4e38\u30ab\u30c3\u30b3\u306e\u4e2d\u306e\u90e8\u5206\u304c\u30d1\u30e9\u30e1\u30fc\u30bf\u3001\u4eee\u5f15\u6570<\/span>\r\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406<\/span>\r\n    $val<\/span> =<\/span> $num<\/span> +<\/span> 1<\/span>;<\/span> \/\/ \u2190\u3053\u3053\u3067\u4f7f\u7528\u3057\u3066\u3044\u308b$num\u304c\u3001\u4e38\u30ab\u30c3\u30b3\u3067\u53d7\u3051\u305f\u30d1\u30e9\u30e1\u30fc\u30bf<\/span>\r\n    return<\/span> $val<\/span>;<\/span> \/\/ \u2190\u3053\u306e\u90e8\u5206\u304c\u8fd4\u308a\u5024<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
function<\/span> functionName<\/span>(){<\/span> \/\/ \u2190\u4e38\u30ab\u30c3\u30b3\u306b\u30d1\u30e9\u30e1\u30fc\u30bf\u3001\u4eee\u5f15\u6570\u304c\u7121\u3044\u5834\u5408...<\/span>\r\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406<\/span>\r\n    $val<\/span> =<\/span> $num<\/span> +<\/span> 1<\/span>;<\/span> \/\/ \u2190\u3053\u3053\u306e$num\u306f\u300c\u672a\u5b9a\u7fa9\u306e\u5909\u6570\u300d\u3092\u4f7f\u304a\u3046\u3068\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308b\u305f\u3081\u3001<\/span>\r\n    return<\/span> $val<\/span>;<\/span>\r\n}<\/span>\r\nfunctionName<\/span>();<\/span> \/\/ \u2190\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u305f\u6642\u70b9\u3067\u30a8\u30e9\u30fc\u306b\u306a\u308b<\/span>\r\n\/\/ [\u30a8\u30e9\u30fc] Notice: Undefined variable: num in \/sample\/index.php on line 4<\/span>\r\n<\/code><\/pre>\n
\u5728\u51fd\u6570\u5185\u53ef\u4ee5\u5199\u591a\u4e2areturn\u8bed\u53e5\uff0c\u4f46\u53ea\u6709\u7b2c\u4e00\u4e2a\u5230\u8fbe\u7684return\u8bed\u53e5\u7684\u5185\u5bb9\u4f1a\u88ab\u8fd4\u56de\u5230\u51fd\u6570\u7684\u8c03\u7528\u70b9\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>$num<\/span>){<\/span>\r\n    $val<\/span> =<\/span> $num<\/span> +<\/span> 1<\/span>;<\/span>\r\n    $va2<\/span> =<\/span> $num<\/span> +<\/span> 2<\/span>;<\/span>\r\n    return<\/span> $val1<\/span>;<\/span> \/\/ \u2190\u3053\u306e\u6642\u70b9\u3067\u8fd4\u308a\u5024\u304c\u8fd4\u3055\u308c\u308b\u306e\u3067<\/span>\r\n    return<\/span> $val2<\/span>;<\/span> \/\/ \u2190\u3053\u306e\u90e8\u5206\u306e\u8fd4\u308a\u5024\u306f\u7121\u52b9\u3068\u306a\u308b<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
function<\/span> functionName<\/span>(<\/span>$num<\/span>){<\/span>\r\n    if<\/span>(<\/span>$num<\/span> ===<\/span> 0<\/span>){<\/span>\r\n        return<\/span> 0<\/span>;<\/span> \/\/ $num\u304c0\u306e\u6642\u306f\u3001\u3053\u306e\u6642\u70b9\u3067\u8fd4\u308a\u5024\u304c\u8fd4\u3055\u308c\u308b<\/span>\r\n    }<\/span>\r\n    if<\/span>(<\/span>$num<\/span> ===<\/span> 1<\/span>){<\/span>\r\n        return<\/span> 1<\/span>;<\/span> \/\/ $num\u304c1\u306e\u6642\u306f\u3001\u3053\u306e\u6642\u70b9\u3067\u8fd4\u308a\u5024\u304c\u8fd4\u3055\u308c\u308b<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u4f60\u60f3\u5728\u6267\u884c\u51fd\u6570\u8fc7\u7a0b\u4e2d\u505c\u6b62\u5e76\u8fd4\u56de\u8c03\u7528\u8005\u7684\u5904\u7406\uff0c\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528\u4e0d\u5e26\u8fd4\u56de\u503c\u7684return\u5173\u952e\u5b57\u3002\u53e6\u5916\uff0c\u53ef\u4ee5\u7701\u7565\u51fd\u6570\u6700\u540e\u7684return\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>$num<\/span>){<\/span>\r\n    if<\/span>(<\/span>$num<\/span> ===<\/span> 0<\/span>){<\/span>\r\n        return<\/span>;<\/span> \/\/ $num\u304c0\u306e\u5834\u5408\u3001\u5373\u5ea7\u306b\u95a2\u6570\u306e\u5b9f\u884c\u3092\u7d42\u4e86\u3059\u308b<\/span>\r\n    }<\/span>\r\n    if<\/span>(<\/span>$num<\/span> ===<\/span> 1<\/span>){<\/span>\r\n        return<\/span> 1<\/span>;<\/span> \/\/ $num\u304c1\u306e\u6642\u306f\u3001\u3053\u306e\u6642\u70b9\u3067\u8fd4\u308a\u5024\u304c\u8fd4\u3055\u308c\u308b<\/span>\r\n    }<\/span>\r\n    return<\/span>;<\/span> \/\/ \u7701\u7565\u53ef\u80fd<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8fd4\u56de\u503c\u59cb\u7ec8\u53ea\u80fd\u8fd4\u56de\u4e00\u4e2a\u503c\u3002\u65e0\u6cd5\u4f7f\u7528\u9017\u53f7\u8fd4\u56de\u591a\u4e2a\u503c\u3002<\/p>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    return<\/span> 1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>;<\/span>\r\n}<\/span>\r\nfunctionName<\/span>();<\/span>\r\n\/\/ [\u30a8\u30e9\u30fc] Parse error: syntax error, unexpected ',' in \/sample\/index.php on line 3<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u5e0c\u671b\u8fd4\u56de\u591a\u4e2a\u503c\uff0c\u8bf7\u4f7f\u7528\u6570\u7ec4\u3002<\/p>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    return<\/span> array<\/span>(<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>);<\/span>\r\n}<\/span>\r\nvar_dump<\/span>(<\/span>functionName<\/span>());<\/span>\r\n\/\/ array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }<\/span>\r\n<\/code><\/pre>\n
return\u306b\u3064\u3044\u3066\u3082\u3063\u3068\u8a73\u3057\u304f
\nreturn \u306b\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5236\u5fa1\u3092\u547c\u3073\u51fa\u3057\u5143\u306b\u623b\u3059\u50cd\u304d\u304c\u3042\u308a\u307e\u3059\u3002 \u547c\u3073\u51fa\u3057\u5074\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u306f\u3001\u547c\u3073\u51fa\u3057\u306e\u6b21\u306e\u5f0f\u304b\u3089\u7d9a\u884c\u3057\u307e\u3059\u3002
\n\u95a2\u6570\u5185\u306breturn\u6587\u3092\u66f8\u304f\u3068\u3001\u5373\u5ea7\u306b\u305d\u306e\u95a2\u6570\u306e\u5b9f\u884c\u3092\u505c\u6b62\u3057\u3001\u5f15\u6570\u3092\u300c\u95a2\u6570\u306e\u5024\u300d\u3068\u3057\u3066\u8fd4\u3057\u307e\u3059\u3002
\n\u3053\u3053\u3067\u8a00\u3046\u300c\u5f15\u6570\u300d\u3068\u306f\u3001return\u6587\u306e\u5f8c\u308d\u306b\u66f8\u304f\u5f0f\u3084\u5024\u306e\u3053\u3068\u3067\u3059\u3002return $val \u3068\u3057\u305f\u5834\u5408\u306f $val \u304c\u5f15\u6570\u3067\u3059\u3002return\u306f\u95a2\u6570\u3067\u306f\u306a\u304f\u300c\u8a00\u8a9e\u69cb\u9020\u300d\u3068\u3044\u3046\u3082\u306e\u306b\u5f53\u305f\u308b\u306e\u3067\u3001 \u5f15\u6570\u3092\u4e38\u30ab\u30c3\u30b3\u3067\u56f2\u3046\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002
\n> PHP\u30de\u30cb\u30e5\u30a2\u30eb – return<\/details>\n
\u7528\u6237\u5b9a\u4e49\u51fd\u6570\u548c\u5185\u7f6e\u51fd\u6570
\n\u5927\u5225\u3059\u308b\u3068\u95a2\u6570\u306b\u306f2\u7a2e\u985e\u3042\u308a\u3001\u81ea\u5206\u3067\u597d\u304d\u306a\u3088\u3046\u306b\u4f5c\u3063\u3066\u5229\u7528\u3059\u308b\u95a2\u6570\u3092\u30e6\u30fc\u30b6\u5b9a\u7fa9\u95a2\u6570\u3001PHP\u306b\u5143\u3005\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u95a2\u6570\uff08\u81ea\u5206\u3067\u308f\u3056\u308f\u3056\u4f5c\u3089\u306a\u304f\u3066\u3082\u5229\u7528\u3067\u304d\u308b\u95a2\u6570\uff09\u3092\u7d44\u307f\u8fbc\u307f\u95a2\u6570\u3068\u3044\u3044\u307e\u3059\u3002<\/p>\n
\u8c03\u7528\u51fd\u6570\u5728\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u9700\u8981\u5199\u51fa\u51fd\u6570\u7684\u540d\u79f0\u4ee5\u53ca\u51fd\u6570\u7684\u53c2\u6570\u7684\u503c\uff08\u5b9e\u9645\u53c2\u6570\uff09\u3002<\/p>\n
$val<\/span> =<\/span> 1<\/span>;<\/span>\r\nfunctionName<\/span>(<\/span>$val<\/span>);<\/span> \/\/ \u95a2\u6570\u547c\u3073\u51fa\u3057\u6642\u3001\u4e38\u30ab\u30c3\u30b3\u306e\u4e2d\u304c\u5024\uff08\u5b9f\u5f15\u6570\uff09\u3068\u306a\u308b<\/span>\r\nfunctionName<\/span>(<\/span>1<\/span>);<\/span> \/\/ \u5024\u306f\u5909\u6570\u3084\u3001\u6570\u5024\u3084\u6587\u5b57\u5217\u306a\u3069\u3067\u3082\u3088\u3044<\/span>\r\n<\/code><\/pre>\n
\u51fd\u6570\u5b9a\u4e49\u548c\u51fd\u6570\u8c03\u7528\u7684\u987a\u5e8f\u3002\u53e6\u5916\uff0c\u5373\u4f7f\u5728\u51fd\u6570\u5b9a\u4e49\u4e4b\u524d\u8fdb\u884c\u51fd\u6570\u8c03\u7528\u4e5f\u4e0d\u4f1a\u6709\u95ee\u9898\u3002<\/p>\n
$num1<\/span> =<\/span> 5<\/span>;<\/span>\r\nfunctionName<\/span>(<\/span>$num1<\/span>);<\/span> \/\/ 10\u304c\u8fd4\u3063\u3066\u304f\u308b<\/span>\r\n\r\nfunction<\/span> functionName<\/span>(<\/span>$num1<\/span>,<\/span> $num2<\/span> =<\/span> 2<\/span>){<\/span>\r\n    $num<\/span> =<\/span> $num1<\/span> *<\/span> $num2<\/span>;<\/span>\r\n    return<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u6570\u3084\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u8272\u3005\u306a\u30d1\u30bf\u30fc\u30f3
\n\u95a2\u6570\u306e\u4f5c\u308a\u306b\u3088\u3063\u3066\u306f\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u4e0d\u8981\u306a\u5834\u5408\u3084\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u3066\u7701\u7565\u53ef\u80fd\u306a\u3082\u306e\u3001\u9006\u306b\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8907\u6570\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u6c92\u6709\u53c3\u6578\u548c\u8fd4\u56de\u503c\u7684\u51fd\u6578\u7684\u4f8b\u5b50\u3002\u8f38\u51fa\u70ba100\u3002
\n\u203b\u8acb\u5206\u958b\u8003\u616e\u8f38\u51fa\u548c\u8fd4\u56de\u503c\u7684\u5b58\u5728\u8207\u5426\u3002<\/p>\n
function<\/span> echoNum<\/span>(){<\/span>\r\n    echo<\/span> 100<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u53ea\u6709\u4e00\u4e2a\u53c2\u6570\u4e14\u6ca1\u6709\u8fd4\u56de\u503c\u7684\u51fd\u6570\u7684\u793a\u4f8b\u3002
\n\u5982\u679c\u53d8\u91cf $count \u88ab\u8d4b\u503c\u4e3a100\uff0c\u5219\u8f93\u51fa\u4e3a 100\u3002<\/p>\n
function<\/span> echoNum<\/span>(<\/span>$count<\/span>){<\/span>\r\n    echo<\/span> $count<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4e0b\u9762\u662f\u4e00\u500b\u6709\u4e00\u500b\u53c3\u6578\u4e26\u4e14\u6709\u8fd4\u56de\u503c\u7684\u51fd\u6578\u793a\u4f8b\u3002\u5982\u679c\u8b8a\u91cf$count\u88ab\u8ce6\u503c\u70ba100\uff0c\u90a3\u9ebc\u6703\u8f38\u51fa100\u4e26\u4e14\u56de\u50b3\u503c1\u7d66\u8abf\u7528\u8a72\u51fd\u6578\u7684\u5730\u65b9\u3002<\/p>\n
function<\/span> echoNum<\/span>(<\/span>$count<\/span>){<\/span>\r\n    echo<\/span> $count<\/span>;<\/span>\r\n    return<\/span> 1<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u2193\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u3075\u305f\u3064\u3042\u308a\u3001\u8fd4\u308a\u5024\u304c\u3042\u308b\u95a2\u6570\u306e\u4f8b\u3002
\n\u5909\u6570$num1\u3068$num2\u306e\u8db3\u3057\u7b97\u306e\u8a08\u7b97\u7d50\u679c\u304c\u3001\u95a2\u6570\u306e\u547c\u3073\u51fa\u3057\u5143\u306b\u8fd4\u308b\u3002
\n$num1\u306b10\u3001$num2\u306b20\u304c\u4ee3\u5165\u3055\u308c\u3066\u3044\u305f\u5834\u5408\u300130 \u306e\u5024\u304c\u8fd4\u308b\u3053\u3068\u306b\u306a\u308b\u3002<\/p>\n
function<\/span> calcNum<\/span>(<\/span>$num1<\/span>,<\/span> $num2<\/span>){<\/span>\r\n    $num<\/span> =<\/span> $num1<\/span> +<\/span> $num2<\/span>;<\/span>\r\n    return<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u2193\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u3075\u305f\u3064\u3042\u308a\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u306e2\u500b\u76ee\u306b\u3060\u3051\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u3066\u3001\u8fd4\u308a\u5024\u304c\u3042\u308b\u95a2\u6570\u306e\u4f8b\u3002
\n\u5909\u6570$num1\u3068$num2\u306e\u639b\u3051\u7b97\u306e\u8a08\u7b97\u7d50\u679c\u304c\u3001\u95a2\u6570\u306e\u547c\u3073\u51fa\u3057\u5143\u306b\u8fd4\u308b\u3002
\n$num1\u306b5\u3001$num2\u306b3\u304c\u4ee3\u5165\u3055\u308c\u3066\u3044\u305f\u5834\u5408\u300115 \u306e\u5024\u304c\u8fd4\u308b\u3053\u3068\u306b\u306a\u308b\u304c\u3001\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u969b\u306b\u4e8c\u3064\u76ee\u306e\u5f15\u6570\u3092\u7701\u7565\u3057\u305f\u5834\u5408\u306f 5 * 2 \u3067 10 \u306e\u5024\u304c\u8fd4\u308b\u3002<\/p>\n
function<\/span> calcNum<\/span>(<\/span>$num1<\/span>,<\/span> $num2<\/span> =<\/span> 2<\/span>){<\/span>\r\n    $num<\/span> =<\/span> $num1<\/span> *<\/span> $num2<\/span>;<\/span>\r\n    return<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
$num1<\/span> =<\/span> 5<\/span>;<\/span>\r\n$num2<\/span> =<\/span> 3<\/span>;<\/span>\r\ncalcNum<\/span>(<\/span>$num1<\/span>,<\/span> $num2<\/span>);<\/span> \/\/ 15\u304c\u8fd4\u3063\u3066\u304f\u308b<\/span>\r\ncalcNum<\/span>(<\/span>$num1<\/span>);<\/span> \/\/ 10\u304c\u8fd4\u3063\u3066\u304f\u308b<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u53c2\u6570\u5177\u6709\u9ed8\u8ba4\u503c\uff0c\u5219\u53ef\u4ee5\u7701\u7565\u5b9e\u9645\u53c2\u6570\u7684\u6307\u5b9a\uff0c\u4f46\u5982\u679c\u7701\u7565\u4e00\u4e2a\u53c2\u6570\uff0c\u5219\u5fc5\u987b\u7701\u7565\u5176\u540e\u7684\u53c2\u6570\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>$num1<\/span> =<\/span> 1<\/span>,<\/span> $num2<\/span> =<\/span> 2<\/span>,<\/span> $num3<\/span> =<\/span> 3<\/span>){<\/span>\r\n    return<\/span> $num1<\/span> +<\/span> $num2<\/span> +<\/span> $num3<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>(<\/span>2<\/span>,<\/span> ,<\/span> 10<\/span>);<\/span> \/\/ \u9014\u4e2d\u306e\u5f15\u6570\u3060\u3051\u3092\u7701\u7565\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044<\/span>\r\n\/\/ [\u30a8\u30e9\u30fc] Parse error: syntax error, unexpected ',', expecting ')' in \/sample\/index.php on line 5<\/span>\r\n<\/code><\/pre>\n
\/\/ \u4e8c\u3064\u76ee\u306e\u5f15\u6570\u3092\u7701\u7565\u3059\u308b\u5834\u5408 \/\/ \u4e8c\u3064\u76ee\u4ee5\u964d\u306e\u5f15\u6570\u3092\u3059\u3079\u3066\u7701\u7565\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044 <\/span>\r\nfunction<\/span> functionName<\/span>(<\/span>$num1<\/span> =<\/span> 1<\/span>,<\/span> $num2<\/span> =<\/span> 2<\/span>,<\/span> $num3<\/span> =<\/span> 3<\/span>){<\/span>\r\n    return<\/span> $num1<\/span> +<\/span> $num2<\/span> +<\/span> $num3<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>(<\/span>2<\/span>);<\/span>\r\n<\/code><\/pre>\n
\/\/ \u4e00\u3064\u76ee\u306e\u5f15\u6570\u3092\u7701\u7565\u3059\u308b\u5834\u5408 \/\/ \u4e00\u3064\u76ee\u4ee5\u964d\u3059\u3079\u3066\u3092\u7701\u7565\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044<\/span>\r\nfunction<\/span> functionName<\/span>(<\/span>$num1<\/span> =<\/span> 1<\/span>,<\/span> $num2<\/span> =<\/span> 2<\/span>,<\/span> $num3<\/span> =<\/span> 3<\/span>){<\/span>\r\n    return<\/span> $num1<\/span> +<\/span> $num2<\/span> +<\/span> $num3<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>();<\/span> \/\/ 6<\/span>\r\n<\/code><\/pre>\n
\u95a2\u6570\u304c\u6c42\u3081\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u6570\u3088\u308a\u591a\u3044\u5b9f\u5f15\u6570\u3092\u4e0e\u3048\u3066\u3082\u3001\u591a\u3044\u5206\u306f\u7121\u8996\u3055\u308c\u308b\u3060\u3051\u3067\u52d5\u4f5c\u306b\u5f71\u97ff\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u95a2\u6570\u304c\u6c42\u3081\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\u3088\u308a\u5b9f\u5f15\u6570\u304c\u5c11\u306a\u3044\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>$num1<\/span>,<\/span> $num2<\/span>){<\/span>\r\n    return<\/span> $num1<\/span> +<\/span> $num2<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>(<\/span>1<\/span>,<\/span> 3<\/span>,<\/span> 5<\/span>);<\/span> \/\/ 4 \/\/ \u4e09\u3064\u76ee\u306e\u5f15\u6570\u304c\u7121\u8996\u3055\u308c\u3066 1 + 3 = 4 \u306e\u7d50\u679c\u51fa\u529b<\/span>\r\n<\/code><\/pre>\n
\u5b9f\u5f15\u6570\u304c\u5c11\u306a\u3044\u5834\u5408\u306e\u30a8\u30e9\u30fc\u306f\u3001PHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u5c11\u3057\u7570\u306a\u308a\u307e\u3059\u3002
\nPHP 5.4\u306e\u5834\u5408\u3060\u3068\u3001\u8b66\u544a\u304c\u51fa\u307e\u3059\u304c\u51e6\u7406\u306f\u7d9a\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>$num1<\/span>,<\/span> $num2<\/span>){<\/span>\r\n    return<\/span> $num1<\/span> +<\/span> $num2<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>(<\/span>1<\/span>);<\/span>\r\n<\/code><\/pre>\n
\/\/ \u5f15\u6570\u304c\u8db3\u308a\u306a\u3044\u3053\u3068\u3092\u793a\u3059\u300c\u8b66\u544a\u300d\u304c\u767a\u305b\u3089\u308c\u308b<\/span>\r\nWarning<\/span>:<\/span> Missing<\/span> argument<\/span> 2<\/span> for<\/span> functionName<\/span>(),<\/span> called<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 6<\/span> and<\/span> defined<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 2<\/span>\r\n\/\/ \u3053\u306e\u884c\u306e\u30a8\u30e9\u30fc\u306f\u8db3\u308a\u306a\u3044\u5f15\u6570\u3067\u3042\u308b$num2\u3092\u95a2\u6570\u306e\u4e2d\u3067\u4f7f\u7528\u3057\u3066\u3044\u308b\u305f\u3081\u306b\u51fa\u3066\u3044\u308b<\/span>\r\nNotice<\/span>:<\/span> Undefined<\/span> variable<\/span>:<\/span> num2<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 3<\/span>\r\n\r\n1<\/span> \/\/ \u5f15\u6570\u3092\u4e00\u3064\u3060\u3051\u4f7f\u7528\u3057\u3066\u51fa\u529b\u306b\u306f\u6210\u529f<\/span>\r\n<\/code><\/pre>\n
PHP 5.4\u3060\u3068\u8b66\u544a\u306f\u51fa\u307e\u3059\u304c\u51e6\u7406\u306f\u7d9a\u884c\u3055\u308c\u308b\u305f\u3081\u3001\u5f15\u6570\u304c\u8db3\u308a\u306a\u3044\u5206\u306f\u305d\u306e\u56de\u6570\u5206\u30a8\u30e9\u30fc\u304c\u767a\u305b\u3089\u308c\u307e\u3059\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>$num1<\/span>,<\/span> $num2<\/span>){<\/span>\r\n    return<\/span> $num1<\/span> +<\/span> $num2<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>();<\/span>\r\n<\/code><\/pre>\n
Warning<\/span>:<\/span> Missing<\/span> argument<\/span> 1<\/span> for<\/span> functionName<\/span>(),<\/span> called<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 7<\/span> and<\/span> defined<\/span> in<\/span> \/<\/span>var<\/span>\/<\/span>www<\/span>\/<\/span>html<\/span>\/<\/span>test<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 2<\/span>\r\n\r\nWarning<\/span>:<\/span> Missing<\/span> argument<\/span> 2<\/span> for<\/span> functionName<\/span>(),<\/span> called<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 7<\/span> and<\/span> defined<\/span> in<\/span> \/<\/span>var<\/span>\/<\/span>www<\/span>\/<\/span>html<\/span>\/<\/span>test<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 2<\/span>\r\n\r\nNotice<\/span>:<\/span> Undefined<\/span> variable<\/span>:<\/span> num2<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 3<\/span>\r\n\r\nNotice<\/span>:<\/span> Undefined<\/span> variable<\/span>:<\/span> num1<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 3<\/span>\r\n0<\/span>\r\n<\/code><\/pre>\n
\u5f53\u4f7f\u7528PHP 7.1\u6216\u66f4\u9ad8\u7248\u672c\u65f6\uff0c\u5982\u679c\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\u4f20\u9012\u7684\u53c2\u6570\u4e0d\u8db3\uff0c\u5c06\u7acb\u5373\u4f5c\u4e3a\u81f4\u547d\u9519\u8bef\u4e2d\u65ad\u5904\u7406\u3002<\/p>\n
Fatal<\/span> error<\/span>:<\/span> Uncaught<\/span> ArgumentCountError<\/span>:<\/span> Too<\/span> few<\/span> arguments<\/span> to<\/span> function<\/span> functionName<\/span>(),<\/span> 1<\/span> passed<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 6<\/span> and<\/span> exactly<\/span> 2<\/span> expected<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span>:<\/span>2<\/span> Stack<\/span> trace<\/span>:<\/span> #0 \/sample\/index.php(6): functionName(1) #1 {main} thrown in \/sample\/index.php on line 2<\/span>\r\n<\/code><\/pre>\n
PHP\u624b\u518c\uff1a\u51fd\u6570\u4f20\u9012\u53c2\u6570\u8f83\u5c11\u65f6\u7684\u884c\u4e3a – \u4e0d\u517c\u5bb9\u7684\u53d8\u66f4\u70b9<\/p>\n
\u5728\u4e4b\u524d\u7684\u7248\u672c\u4e2d\uff0c\u5982\u679c\u5411\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\u4f20\u9012\u7684\u53c2\u6570\u4e0d\u591f\uff0c\u4f1a\u53d1\u51fa\u8b66\u544a\u3002\u5728PHP 7.1\u4ee5\u4e0a\u7684\u7248\u672c\u4e2d\uff0c\u5c06\u4f1a\u629b\u51fa\u9519\u8bef\u5f02\u5e38\u800c\u4e0d\u662f\u8b66\u544a\u3002\u8fd9\u4e2a\u53d8\u66f4\u4ec5\u9002\u7528\u4e8e\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\uff0c\u4e0d\u4f1a\u5bf9\u5185\u90e8\u51fd\u6570\u4ea7\u751f\u5f71\u54cd\u3002<\/p><\/blockquote>\n
\u5982\u679c\u51fd\u6570\u7684\u53c2\u6570\u6570\u91cf\u672a\u786e\u5b9a
\n\u5f53\u53c2\u6570\u7684\u6570\u91cf\u4e0d\u786e\u5b9a\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u3002
\n\u7531\u4e8e\u6709\u5904\u7406\u53ef\u53d8\u53c2\u6570\u7684\u5185\u7f6e\u51fd\u6570\uff0c\u6240\u4ee5\u53ef\u4ee5\u540c\u65f6\u4f7f\u7528\u5b83\u3002<\/p>\n
\u5904\u7406\u53ef\u53d8\u53c2\u6570\u7684\u5185\u7f6e\u51fd\u6570func_num_args() \u8fd4\u56de\u7ed9\u5b9a\u53c2\u6570\u7684\u6570\u91cf\u3002
\nfunc_get_arg() \u8fd4\u56de\u6307\u5b9a\u4f4d\u7f6e\u7684\u53c2\u6570\u3002
\nfunc_get_args() \u4ee5\u6570\u7ec4\u5f62\u5f0f\u8fd4\u56de\u6240\u6709\u7ed9\u5b9a\u7684\u53c2\u6570\u3002<\/p>\n
\u4f7f\u7528\u4f8b\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    $count<\/span> =<\/span> func_num_args<\/span>();<\/span>\r\n    echo<\/span> \"\u5f15\u6570\u306e\u6570: \u5168\u90e8\u3067 <\/span>$count<\/span> \u500b<\/span>\\n<\/span>\"<\/span>;<\/span>\r\n}<\/span>\r\nfunctionName<\/span>(<\/span>5<\/span>,<\/span> 3<\/span>,<\/span> 1<\/span>);<\/span> \/\/ \u5f15\u6570\u306e\u6570: \u5168\u90e8\u3067 3 \u500b<\/span>\r\n<\/code><\/pre>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    $arg0<\/span> =<\/span> func_get_arg<\/span>(<\/span>0<\/span>);<\/span>\r\n    echo<\/span> \"\u6700\u521d\u306e\u5f15\u6570\uff1a<\/span>$arg0<\/span>\\n<\/span>\"<\/span>;<\/span>\r\n}<\/span>\r\nfunctionName<\/span>(<\/span>5<\/span>,<\/span> 3<\/span>,<\/span> 1<\/span>);<\/span> \/\/ \u6700\u521d\u306e\u5f15\u6570\uff1a5<\/span>\r\n<\/code><\/pre>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    $args<\/span> =<\/span> func_get_args<\/span>();<\/span>\r\n    $count<\/span> =<\/span> count<\/span>(<\/span>$args<\/span>);<\/span>\r\n    for<\/span> (<\/span>$i<\/span> =<\/span> 0<\/span>;<\/span> $i<\/span> <<\/span> $count<\/span>;<\/span> $i<\/span>++<\/span>)<\/span> {<\/span>\r\n        $num<\/span> =<\/span> $i<\/span> +<\/span> 1<\/span>;<\/span>\r\n        echo<\/span> \"<\/span>{<\/span>$num<\/span>}<\/span>\u500b\u76ee\u306e\u5f15\u6570 \u2192 \"<\/span> .<\/span> $args<\/span>[<\/span>$i<\/span>]<\/span> .<\/span> \"<\/span>\\n<\/span>\"<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\nfunctionName<\/span>(<\/span>5<\/span>,<\/span> 3<\/span>,<\/span> 1<\/span>);<\/span> \/\/ 1\u500b\u76ee\u306e\u5f15\u6570 \u2192 5 \/\/ 2\u500b\u76ee\u306e\u5f15\u6570 \u2192 3 \/\/ 3\u500b\u76ee\u306e\u5f15\u6570 \u2192 1<\/span>\r\n\r\n\/\/ \u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3057\u3066\u3082\u540c\u3058\u7d50\u679c\u304c\u5f97\u3089\u308c\u307e\u3059<\/span>\r\nfunction<\/span> functionName2<\/span>(){<\/span>\r\n    $args<\/span> =<\/span> func_get_args<\/span>();<\/span>\r\n    foreach<\/span> (<\/span>$args<\/span> as<\/span> $key<\/span> =><\/span> $val<\/span>)<\/span> {<\/span>\r\n        $num<\/span> =<\/span> $key<\/span> +<\/span> 1<\/span>;<\/span>\r\n        echo<\/span> \"<\/span>{<\/span>$num<\/span>}<\/span>\u500b\u76ee\u306e\u5f15\u6570 \u2192 \"<\/span> .<\/span> $val<\/span> .<\/span> \"<\/span>\\n<\/span>\"<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\nfunctionName2<\/span>(<\/span>5<\/span>,<\/span> 3<\/span>,<\/span> 1<\/span>);<\/span> \/\/ 1\u500b\u76ee\u306e\u5f15\u6570 \u2192 5 \/\/ 2\u500b\u76ee\u306e\u5f15\u6570 \u2192 3 \/\/ 3\u500b\u76ee\u306e\u5f15\u6570 \u2192 1<\/span>\r\n<\/code><\/pre>\n
\u51fd\u6570\u7684\u5d4c\u5957\u7ed3\u6784
\n\u5728\u4e00\u4e2a\u51fd\u6570\u4e2d\u53ef\u4ee5\u5199\u5165\u66f4\u591a\u7684\u51fd\u6570\uff0c\u8fd9\u88ab\u79f0\u4e3a\u5d4c\u5957\u6216\u8005\u5d4c\u5957\u8c03\u7528\u3002
\n\u4e3a\u4e86\u8c03\u7528\u5185\u90e8\u7684\u5d4c\u5957\u51fd\u6570\uff0c\u9700\u8981\u901a\u8fc7\u8c03\u7528\u5305\u542b\u5b83\u7684\u5916\u90e8\uff08\u7236\u7ea7\uff09\u51fd\u6570\uff0c\u4ee5\u4fbf\u5185\u90e8\u5d4c\u5957\u7684\u51fd\u6570\u88ab\u5b9a\u4e49\u5e76\u8c03\u7528\u3002<\/p>\n
function<\/span> parent<\/span>(){<\/span>\r\n    function<\/span> child<\/span>(){<\/span>\r\n        echo<\/span> 'child'<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\nchild<\/span>();<\/span> \/\/ \u3053\u306e\u6642\u70b9\u3067\u306f\u89aa\u304c\u547c\u3073\u51fa\u3055\u308c\u3066\u3044\u306a\u3044\u306e\u3067\u5b50\u3082\u547c\u3073\u51fa\u305b\u306a\u3044<\/span>\r\nparent<\/span>();<\/span> \/\/ \u3053\u308c\u4ee5\u964d\u304b\u3089child()\u3092\u547c\u3073\u51fa\u305b\u308b\u3088\u3046\u306b\u306a\u308b<\/span>\r\n<\/code><\/pre>\n
\u51fd\u6570\u7684\u526f\u4f5c\u7528\u5728\u51fd\u6570\u4e2d\uff0c\u5982\u679c\u9664\u4e86\u8ba1\u7b97\u8fd4\u56de\u503c\u5e76\u5c06\u8fd4\u56de\u503c\u8fd4\u56de\u7ed9\u51fd\u6570\u8c03\u7528\u8005\u4e4b\u5916\u8fd8\u5305\u542b\u5176\u4ed6\u64cd\u4f5c\uff0c\u90a3\u4e48\u8fd9\u4e2a\u51fd\u6570\u5c31\u5177\u6709\u526f\u4f5c\u7528\u3002
\n\u4f8b\u5982\uff0c\u5728\u8fd4\u56de\u8fd4\u56de\u503c\u4e4b\u524d\uff0c\u5728\u51fd\u6570\u5185\u90e8\u4f7f\u7528 echo \u8f93\u51fa\uff0c\u6216\u8005\u5220\u9664\u6587\u4ef6\u7b49\u64cd\u4f5c\u3002<\/p>\n
\u51fd\u6570\u547d\u540d\u89c4\u5219\u4ee5\u4e0b\u662f\u5728PHP\u624b\u518c\u4e2d\u6240\u63d0\u5230\u7684\u5185\u5bb9\u3002<\/p>\n
\u6709\u6548\u7684\u51fd\u6570\u540d\u683c\u5f0f\u9996\u5148\u4ee5\u5b57\u7b26\u6216\u4e0b\u5212\u7ebf\u5f00\u59cb\uff0c\u7136\u540e\u53ef\u4ee5\u8ddf\u968f\u4efb\u610f\u6570\u91cf\u7684\u5b57\u7b26\u3001\u6570\u5b57\u6216\u4e0b\u5212\u7ebf\u3002\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u8868\u793a\u4e3a\uff1a^[a-zA-Z_\\x80-\\xff][a-zA-Z0-9_\\x80-\\xff]*$\u3002<\/p><\/blockquote>\n
\u7b80\u800c\u8a00\u4e4b\uff0c\u51fd\u6570\u7684\u540d\u79f0\u53ef\u4ee5\u662f\u534a\u89d2\u5b57\u6bcd\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\uff0c\u6216\u8005\u5305\u62ec\u65e5\u8bed\u5728\u5185\u7684\u5176\u4ed6\u5b57\u7b26\u3002
\n\u7b2c\u4e00\u4e2a\u5b57\u7b26\u4e0d\u80fd\u662f\u6570\u5b57\uff0c\u4f46\u662f\u4ece\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u5f00\u59cb\u53ef\u4ee5\u4f7f\u7528\u6570\u5b57\u3002
\n\u6b64\u5916\uff0c\u7531\u4e8e\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u6709”\\x7f-\\xff”\uff0c\u6240\u4ee5\u5982\u679c\u5b57\u7b26\u7f16\u7801\u662fUTF-8\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528\u5e73\u5047\u540d\u3001\u7247\u5047\u540d\u3001\u6c49\u5b57\u7b49\u5b57\u7b26\u3002<\/p>\n
\u7136\u800c\uff0c\u662f\u5426\u5728\u51fd\u6570\u540d\u4e2d\u4f7f\u7528\u65e5\u8bed\u7684\u95ee\u9898\u4ecd\u6709\u4e89\u8bae\uff0c\u56e0\u6b64\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u8bf7\u9075\u5faa\u73b0\u573a\u89c4\u5b9a\u3002\u4f8b\u5982\uff0c\u5728\u7cfb\u7edf\u4e2d\u4e3b\u8981\u4f7f\u7528\u7684\u4ee3\u7801\uff0c\u79f0\u4e3a\u4e1a\u52a1\u903b\u8f91\u548c\u4ea7\u54c1\u4ee3\u7801\u7684\u7c7b\u522b\u901a\u5e38\u4e0d\u4f7f\u7528\u65e5\u8bed\uff0c\u4f46\u6709\u4e9b\u73b0\u573a\u5728\u6d4b\u8bd5\u4ee3\u7801\u4e2d\u91c7\u7528\u65e5\u8bed\u51fd\u6570\u540d\u3002<\/p>\n
\u51fd\u6570\u540d\u79f0\u7684\u5927\u5c0f\u5199\u662f\u4e0d\u533a\u5206\u7684\u3002<\/p>\n
\/\/ \u3053\u308c\u3089\u306e\u95a2\u6570\u306f\u5168\u3066\u540c\u3058\u95a2\u6570\u540d\u3060\u3068\u5224\u65ad\u3055\u308c\u308b\u305f\u3081\u3001\u4e8c\u3064\u76ee\u4ee5\u964d\u306e\u95a2\u6570\u306f\u30a8\u30e9\u30fc\u3068\u306a\u308b<\/span>\r\nfunction<\/span> functionName<\/span>(){<\/span>\r\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406<\/span>\r\n}<\/span>\r\nfunction<\/span> Functionname<\/span>(){<\/span>\r\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406<\/span>\r\n}<\/span>\r\nfunction<\/span> FUNCTIONNAME<\/span>(){<\/span>\r\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406<\/span>\r\n}<\/span>\r\n\/\/ [\u30a8\u30e9\u30fc] Fatal error: Cannot redeclare Functionname() (previously declared in \/var\/www\/html\/test\/index.php:3) in \/sample\/index.php on line 7<\/span>\r\n<\/code><\/pre>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406<\/span>\r\n}<\/span>\r\n\r\nFunctionName<\/span>();<\/span> \/\/ functionName() \u3092\u547c\u3073\u51fa\u305b\u308b<\/span>\r\nFunctionname<\/span>();<\/span> \/\/ functionName() \u3092\u547c\u3073\u51fa\u305b\u308b<\/span>\r\nFUNCTIONNAME<\/span>();<\/span> \/\/ functionName() \u3092\u547c\u3073\u51fa\u305b\u308b<\/span>\r\n<\/code><\/pre>\n
\u5173\u4e8e\u8303\u56f4\u8a71\u4e0d\u662f\u95dc\u65bc\u51fd\u6578\u800c\u662f\u8b8a\u6578\uff0c\u6211\u5011\u7a31\u4e4b\u70ba\u4f5c\u7528\u57df\u7684\u7bc4\u570d\uff0c\u8a72\u7bc4\u570d\u6307\u7684\u662f\u4e00\u500b\u8b8a\u6578\u5728\u4ee3\u78bc\u4e2d\u7684\u53ef\u7528\u4f4d\u7f6e\u3002\u8b8a\u6578\u7684\u8072\u660e\u4f4d\u7f6e\u5c07\u5176\u5206\u70ba\u5168\u5c40\u4f5c\u7528\u57df\u548c\u51fd\u6578\u7d1a\u4f5c\u7528\u57df\u5169\u7a2e\u3002<\/p>\n
\u5168\u7403\u8303\u56f4\u30b0\u30ed\u30fc\u30d0\u30eb\u30b9\u30b3\u30fc\u30d7\u306f\u3001\u95a2\u6570\u306e\u5916\u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u306e\u30b9\u30b3\u30fc\u30d7\u3067\u3059\u3002
\n\u5909\u6570\u306e\u6709\u52b9\u7bc4\u56f2\u306f\u30b9\u30af\u30ea\u30d7\u30c8\u5185\u3059\u3079\u3066\u306e\u5834\u6240\u3068\u306a\u308a\u3001\u3069\u3053\u304b\u3089\u3067\u3082\u4f7f\u3048\u308b\u306e\u304c\u57fa\u672c\u3067\u3059\u304c\u3001\u95a2\u6570\u5185\u304b\u3089\u30b0\u30ed\u30fc\u30d0\u30eb\u30b9\u30b3\u30fc\u30d7\u5909\u6570\u3092\u4f7f\u3046\u5834\u5408\u306f global \u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u5909\u6570\u3092\u6307\u5b9a\u3057\u305f\u5f8c\u306b\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    echo<\/span> $val<\/span>;<\/span>\r\n}<\/span>\r\n$val<\/span> =<\/span> 1<\/span>;<\/span>\r\nfunctionName<\/span>();<\/span> \/\/ \u95a2\u6570\u5185\u304b\u3089\u30b0\u30ed\u30fc\u30d0\u30eb\u30b9\u30b3\u30fc\u30d7\u306e\u5909\u6570\u3092\u547c\u3079\u306a\u3044\u305f\u3081\u30a8\u30e9\u30fc<\/span>\r\n<\/code><\/pre>\n
global\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u306a\u304b\u3063\u305f\u5834\u5408\u306f\u4e0b\u8a18\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002 Undefined variable \u3068\u306f\u300c\u5909\u6570\u304c\u672a\u5b9a\u7fa9\u3067\u3042\u308b\u300d\u3068\u3044\u3046\u30a8\u30e9\u30fc\u306e\u5185\u5bb9\u3067\u3059\u3002<\/p>\n
Notice<\/span>:<\/span> Undefined<\/span> variable<\/span>:<\/span> val<\/span> in<\/span> \/<\/span>sample<\/span>\/<\/span>index<\/span>.<\/span>php<\/span> on<\/span> line<\/span> 3<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u4f7f\u7528global\u5173\u952e\u5b57\uff0c\u5728\u51fd\u6570\u5185\u4f7f\u7528\u5168\u5c40\u53d8\u91cf\u4e5f\u4e0d\u4f1a\u62a5\u9519\u3002<\/p>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    global<\/span> $val<\/span>;<\/span> \/\/ global\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u5909\u6570\u3092\u6307\u5b9a<\/span>\r\n    echo<\/span> $val<\/span>;<\/span>\r\n}<\/span>\r\n$val<\/span> =<\/span> 1<\/span>;<\/span>\r\nfunctionName<\/span>();<\/span> \/\/ 1<\/span>\r\n<\/code><\/pre>\n
\u51fd\u6570\u7ea7\u4f5c\u7528\u57df
\n\u51fd\u6570\u7ea7\u4f5c\u7528\u57df\u6307\u7684\u662f\u5728\u51fd\u6570\u5185\u58f0\u660e\u7684\u53d8\u91cf\u7684\u8303\u56f4\u3002
\n\u5982\u679c\u8bd5\u56fe\u5728\u51fd\u6570\u5916\u4f7f\u7528\u5728\u51fd\u6570\u5185\u58f0\u660e\u7684\u53d8\u91cf\uff0c\u5c31\u4f1a\u4ea7\u751f\u9519\u8bef\u3002<\/p>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    $val<\/span> =<\/span> 1<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> $val<\/span>;<\/span>\r\n\/\/ [\u30a8\u30e9\u30fc] Notice: Undefined variable: val in \/sample\/index.php on line 5<\/span>\r\n<\/code><\/pre>\n
\u4f60\u53ef\u4ee5\u8bd5\u7740\u8c03\u7528\u4e00\u6b21\u51fd\u6570\u7136\u540e\u518d\u4f7f\u7528\u53d8\u91cf\uff0c\u4f46\u4ecd\u4f1a\u51fa\u73b0\u76f8\u540c\u7684\u9519\u8bef\u3002<\/p>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    $val<\/span> =<\/span> 1<\/span>;<\/span>\r\n}<\/span>\r\nfunctionName<\/span>();<\/span>\r\necho<\/span> $val<\/span>;<\/span>\r\n\/\/ [\u30a8\u30e9\u30fc] Notice: Undefined variable: val in \/sample\/index.php on line 6<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u60f3\u5728\u51fd\u6570\u5916\u90e8\u4f7f\u7528\u5728\u51fd\u6570\u5185\u90e8\u58f0\u660e\u7684\u53d8\u91cf\uff0c\u5219\u53ef\u4ee5\u901a\u8fc7\u5728return\u4e2d\u8fd4\u56de\u8be5\u53d8\u91cf\u7684\u503c\u6765\u5b9e\u73b0\u540c\u6837\u7684\u6548\u679c\u3002<\/p>\n
function<\/span> functionName<\/span>(){<\/span>\r\n    $val<\/span> =<\/span> 1<\/span>;<\/span>\r\n    return<\/span> $val<\/span>;<\/span>\r\n}<\/span>\r\n$num<\/span> =<\/span> functionName<\/span>();<\/span>\r\necho<\/span> $num<\/span>;<\/span> \/\/ 1<\/span>\r\n<\/code><\/pre>\n
\u305f\u3060\u3057\u3001\u95a2\u6570\u306e\u547c\u3073\u51fa\u3057\u304c\u7d42\u308f\u308b\u3068\u3001\u95a2\u6570\u306e\u4e2d\u3067\u5ba3\u8a00\u3055\u308c\u305f\u5909\u6570\u3082\u6d88\u3048\u3066\u3057\u307e\u3044\u307e\u3059\u306e\u3067\u3001\u5909\u6570\u306e\u5024\u3092\u4fdd\u6301\u3057\u305f\u3044\u6642\u306f static \u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n
\/\/ \u901a\u5e38\u306f\u95a2\u6570\u547c\u3073\u51fa\u3057\u3054\u3068\u306b\u5185\u90e8\u306e\u5909\u6570\u306e\u5024\u306f\u6d88\u3048\u308b\u306e\u3067<\/span>\r\n\/\/ \u4eca\u56de\u306e\u5834\u5408\u3060\u3068\u4f55\u5ea6\u547c\u3073\u51fa\u3057\u3066\u3082\u7d50\u679c\u306f\u540c\u3058\u306b\u306a\u308b<\/span>\r\nfunction<\/span> functionName<\/span>(){<\/span>\r\n    $val<\/span> =<\/span> 0<\/span>;<\/span>\r\n    $val<\/span> =<\/span> $val<\/span> +<\/span> 1<\/span>;<\/span>\r\n    return<\/span> $val<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>();<\/span> \/\/ 1<\/span>\r\necho<\/span> functionName<\/span>();<\/span> \/\/ 1<\/span>\r\n<\/code><\/pre>\n
\/\/ \u5909\u6570\u306bstatic\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4ed8\u3051\u308b\u3068\u5024\u306e\u4fdd\u6301\u304c\u53ef\u80fd\u306b\u306a\u308a<\/span>\r\n\/\/ 2\u56de\u76ee\u306e\u95a2\u6570\u547c\u3073\u51fa\u3057\u6642\u306f1\u56de\u76ee\u306e\u7d50\u679c\u3092\u5f15\u304d\u7d99\u3044\u3060\u72b6\u614b\u304b\u3089\u30b9\u30bf\u30fc\u30c8\u3059\u308b<\/span>\r\nfunction<\/span> functionName<\/span>(){<\/span>\r\n    static<\/span> $val<\/span> =<\/span> 0<\/span>;<\/span>\r\n    $val<\/span> =<\/span> $val<\/span> +<\/span> 1<\/span>;<\/span>\r\n    return<\/span> $val<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>();<\/span> \/\/ 1<\/span>\r\necho<\/span> functionName<\/span>();<\/span> \/\/ 2<\/span>\r\n<\/code><\/pre>\n
\u4e0a\u8a18\u306e\u4f8b\u3060\u30682\u56de\u76ee\u306e\u95a2\u6570\u547c\u3073\u51fa\u3057\u6642\u306b\u3082 static $val = 0; \u3067\u5909\u6570\u3092\u521d\u671f\u5316\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u6bce\u56de\u5909\u6570\u304c0\u306b\u521d\u671f\u5316\u3055\u308c\u3066\u3057\u307e\u3046\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001static\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u305f\u5909\u6570\u4ee3\u5165\u306f1\u56de\u76ee\u306e\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u3068\u304d\u3060\u3051\u884c\u308f\u308c\u308b\u305f\u3081\u3001\u6bce\u56de\u521d\u671f\u5316\u3055\u308c\u308b\u3068\u3044\u3046\u3053\u3068\u306b\u306f\u306a\u3089\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n
\u53e6\u5916\uff0c\u5e26\u6709static\u5173\u952e\u5b57\u7684\u53d8\u91cf\u53ef\u4ee5\u7528\u201c\u6570\u503c\u3001\u5b57\u7b26\u4e32\u7b49\u7684\u5b9e\u9645\u503c\u201d\uff08\u5373\u5b57\u9762\u91cf\uff09\u6216\u5e38\u91cf\u8fdb\u884c\u521d\u59cb\u5316\uff0c\u4f46\u4e0d\u80fd\u4f7f\u7528\u53d8\u91cf\u7b49\u8868\u8fbe\u5f0f\u8fdb\u884c\u521d\u59cb\u5316\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>$num<\/span>){<\/span>\r\n    static<\/span> $val<\/span> =<\/span> $num<\/span>;<\/span> \/\/ \u5909\u6570\u3067\u521d\u671f\u5316<\/span>\r\n    $val<\/span> =<\/span> $val<\/span> +<\/span> 1<\/span>;<\/span>\r\n    return<\/span> $val<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>(<\/span>1<\/span>);<\/span>\r\n\/\/ [\u30a8\u30e9\u30fc] Fatal error: Constant expression contains invalid operations in \/sample\/index.php on line 3<\/span>\r\n<\/code><\/pre>\n
\u5173\u4e8e\u53d8\u91cf\u7684\u503c\u4f20\u9012\u548c\u5f15\u7528\u4f20\u9012
\n\u5024\u6e21\u3057\u3068\u53c2\u7167\u6e21\u3057\u306b\u306f\u3001\u305d\u306e\u5909\u6570\u306e\u5024\u306e\u30b3\u30d4\u30fc\u3092\u6e21\u3059\u304b\u3001\u305d\u306e\u5909\u6570\u305d\u306e\u3082\u306e\u3092\u6e21\u3059\u304b\u3001\u3068\u3044\u3046\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002
\n\u95a2\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\uff08\u4eee\u5f15\u6570\uff09\u3067\u3082\u3001\u5024\u6e21\u3057\u3068\u53c2\u7167\u6e21\u3057\u304c\u53ef\u80fd\u3067\u3059\u3002
\n\u901a\u5e38\u3088\u304f\u4f7f\u7528\u3059\u308b\u306e\u306f\u5024\u6e21\u3057\u306e\u65b9\u3067\u3001\u3053\u308c\u307e\u3067\u8a18\u8f09\u3057\u305f\u95a2\u6570\u306e\u4f8b\u3068\u540c\u69d8\u3067\u3059\u3002
\n\u3053\u3061\u3089\u306e\u5024\u6e21\u3057\u306e\u65b9\u6cd5\u3060\u3068\u3001\u3042\u304f\u307e\u3067\u5024\u306e\u30b3\u30d4\u30fc\u306b\u5bfe\u3057\u3066\u64cd\u4f5c\u3092\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u5143\u306e\u5909\u6570\u306e\u5024\u304c\u5909\u308f\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>$num<\/span>){<\/span>\r\n    $num<\/span>++<\/span>;<\/span>\r\n    echo<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n$count<\/span> =<\/span> 0<\/span>;<\/span>\r\necho<\/span> functionName<\/span>(<\/span>$count<\/span>);<\/span> \/\/ 1<\/span>\r\necho<\/span> functionName<\/span>(<\/span>$count<\/span>);<\/span> \/\/ 1<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u60f3\u8981\u5c06\u53c2\u6570\u4f5c\u4e3a\u5f15\u7528\u4f20\u9012\uff0c\u8bf7\u5728\u53c2\u6570\u524d\u9762\u52a0\u4e0a &\uff08\u5b89\u57f9\u5546\uff09\u7b26\u53f7\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>&<\/span>$num<\/span>){<\/span> \/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u982d\u306b\u30a2\u30f3\u30d1\u30b5\u30f3\u30c9\u3092\u8ffd\u52a0<\/span>\r\n    $num<\/span>++<\/span>;<\/span>\r\n    echo<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n$count<\/span> =<\/span> 0<\/span>;<\/span>\r\necho<\/span> functionName<\/span>(<\/span>$count<\/span>);<\/span> \/\/ 1<\/span>\r\necho<\/span> functionName<\/span>(<\/span>$count<\/span>);<\/span> \/\/ 2<\/span>\r\n<\/code><\/pre>\n
\u5728\u4f7f\u7528\u5f15\u7528\u4f20\u9012\u7684\u60c5\u51b5\u4e0b\uff0c\u610f\u5473\u7740\u5bf9\u53d8\u91cf\u672c\u8eab\u800c\u4e0d\u662f\u590d\u5236\u54c1\u8fdb\u884c\u64cd\u4f5c\uff0c\u56e0\u6b64\u5728\u4e0a\u8ff0\u4f8b\u5b50\u4e2d$result\u7684\u503c\u53d1\u751f\u4e86\u53d8\u5316\u3002<\/p>\n
\u307e\u305f\u3001\u53c2\u7167\u6e21\u3057\u306f\u5143\u306e\u5909\u6570\u3092\u898b\u306b\u884c\u3053\u3046\u3068\u3059\u308b\u305f\u3081\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u53c2\u7167\u6e21\u3057\u306b\u306a\u3063\u3066\u3044\u308b\u95a2\u6570\u306b\u5bfe\u3057\u5b9f\u5f15\u6570\u3067\u306f\u5909\u6570\u3092\u4e0e\u3048\u306a\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u3092\u3059\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>&<\/span>$num<\/span>){<\/span>\r\n    $num<\/span>++<\/span>;<\/span>\r\n    echo<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>(<\/span>0<\/span>);<\/span> \/\/ \u5909\u6570\u3067\u306f\u306a\u304f\u6570\u5024\u3092\u5b9f\u5f15\u6570\u3068\u3057\u3066\u4e0e\u3048\u308b<\/span>\r\n\/\/ [\u30a8\u30e9\u30fc] Fatal error: Only variables can be passed by reference in \/sample\/index.php on line 6<\/span>\r\n<\/code><\/pre>\n
\u5373\u4f7f\u662f\u901a\u8fc7\u5f15\u7528\u4f20\u9012\u7684\u60c5\u51b5\u4e0b\uff0c\u4e5f\u53ef\u4ee5\u5728\u51fd\u6570\u53c2\u6570\u4e2d\u6307\u5b9a\u9ed8\u8ba4\u503c\u3002<\/p>\n
function<\/span> functionName<\/span>(<\/span>&<\/span>$num<\/span> =<\/span> 0<\/span>){<\/span>\r\n    $num<\/span>++<\/span>;<\/span>\r\n    echo<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\necho<\/span> functionName<\/span>();<\/span> \/\/ 1<\/span>\r\n<\/code><\/pre>\n
\u8fd4\u56de\u503c\u7684\u5f15\u7528\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u51fd\u6570\u8fd4\u56de\u503c\u4f1a\u4ee5\u503c\u7684\u526f\u672c\u7684\u5f62\u5f0f\u8fd4\u56de\uff0c\u4f46\u5982\u679c\u5c06\u51fd\u6570\u540d\u5b9a\u4e49\u4e3a &\u51fd\u6570\u540d \u5e76\u8fdb\u884c\u8c03\u7528\uff0c\u5219\u8fd4\u56de\u503c\u5c06\u4ee5\u5f15\u7528\u7684\u65b9\u5f0f\u8fd4\u56de\u3002<\/p>\n
\/\/ \u53c2\u7167\u3067\u5024\u3092\u8fd4\u3059\u6642\u306f\u95a2\u6570\u540d\u306e\u5148\u982d\u306b&\u3092\u4ed8\u3051\u308b<\/span>\r\nfunction<\/span> &<\/span>functionName<\/span>(<\/span>&<\/span>$a<\/span>){<\/span>\r\n    return<\/span> $a<\/span>;<\/span>\r\n}<\/span>\r\n$num<\/span> =<\/span> 2<\/span>;<\/span>\r\n$val<\/span> =<\/span> &<\/span>functionName<\/span>(<\/span>$num<\/span>);<\/span> \/\/ \u5f15\u6570\u306e\u53c2\u7167\u6e21\u3057\u306f\u95a2\u6570\u5b9a\u7fa9\u6642\u306e\u307f\u3067\u3088\u3044<\/span>\r\n$num<\/span> =<\/span> 5<\/span>;<\/span>\r\necho<\/span> $val<\/span>;<\/span> \/\/ 5 \/\/ \u8fd4\u308a\u5024\u3092\u53c2\u7167\u306b\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u73fe\u5728\u306e$num\u306e\u5024\u304c\u8fd4\u3055\u308c\u3066\u3044\u308b<\/span>\r\n<\/code><\/pre>\n
\u5173\u4e8e\u53ef\u53d8\u51fd\u6570\u3002
\n\u53ef\u53d8\u51fd\u6570\u662f\u5c06\u51fd\u6570\u540d\u79f0\u8d4b\u503c\u7ed9\u53d8\u91cf\u7684\u4e00\u79cd\u65b9\u5f0f\uff0c\u975e\u5e38\u65b9\u4fbf\u5728\u9700\u8981\u6761\u4ef6\u5206\u652f\u8c03\u7528\u51fd\u6570\u65f6\u4f7f\u7528\u3002\u53ea\u8981\u5728\u53d8\u91cf\u540e\u9762\u52a0\u4e0a\u62ec\u53f7\uff0c\u5c31\u53ef\u4ee5\u8c03\u7528\u81ea\u5b9a\u4e49\u51fd\u6570\u548c\u5185\u7f6e\u51fd\u6570\u3002<\/p>\n
function<\/span> test<\/span>(){<\/span>\r\n    echo<\/span> 'test\u95a2\u6570\u3067\u3059'<\/span>;<\/span>\r\n}<\/span>\r\n$name<\/span> =<\/span> 'test'<\/span>;<\/span>\r\n$name<\/span>();<\/span> \/\/ test\u95a2\u6570\u3067\u3059<\/span>\r\n<\/code><\/pre>\n
$name<\/span> =<\/span> 'count'<\/span>;<\/span>\r\n$arr<\/span> =<\/span> array<\/span>(<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>);<\/span>\r\necho<\/span> $name<\/span>(<\/span>$arr<\/span>);<\/span> \/\/ 3<\/span>\r\n<\/code><\/pre>\n
function<\/span> morning<\/span>(){<\/span>\r\n    echo<\/span> '\u304a\u306f\u3088\u3046'<\/span>;<\/span>\r\n}<\/span>\r\nfunction<\/span> afternoon<\/span>(){<\/span>\r\n    echo<\/span> '\u3053\u3093\u306b\u3061\u306f'<\/span>;<\/span>\r\n}<\/span>\r\nfunction<\/span> night<\/span>(){<\/span>\r\n    echo<\/span> '\u3053\u3093\u3070\u3093\u306f'<\/span>;<\/span>\r\n}<\/span>\r\n$time<\/span> =<\/span> 10<\/span>;<\/span>\r\nif<\/span>(<\/span>$time<\/span> ><\/span> 6<\/span> &&<\/span> $time<\/span> <<\/span> 12<\/span>){<\/span>\r\n    $functionName<\/span> =<\/span> 'morning'<\/span>;<\/span>\r\n}<\/span> elseif<\/span>(<\/span>$time<\/span> >=<\/span> 12<\/span> &&<\/span> $time<\/span> <<\/span> 18<\/span>)<\/span> {<\/span>\r\n    $functionName<\/span> =<\/span> 'afternoon'<\/span>;<\/span>\r\n}<\/span> else<\/span> {<\/span>\r\n    $functionName<\/span> =<\/span> 'night'<\/span>;<\/span>\r\n}<\/span>\r\n$functionName<\/span>();<\/span> \/\/ \u304a\u306f\u3088\u3046<\/span>\r\n<\/code><\/pre>\n
\u4e3a\u4e86\u907f\u514d\u53ef\u53d8\u51fd\u6570\u82e5\u6ca1\u6709\u6307\u5b9a\u7684\u51fd\u6570\u540d\u5c06\u4f1a\u51fa\u73b0\u9519\u8bef\uff0c\u53ef\u4ee5\u4f7f\u7528function_exists()\u5728\u4e8b\u524d\u68c0\u67e5\u8be5\u51fd\u6570\u662f\u5426\u5b58\u5728\u3002<\/p>\n
\u5982\u679c\u6307\u5b9a\u7684\u51fd\u6570\u5df2\u7ecf\u5b9a\u4e49\uff0c\u8fd4\u56de true<\/p>\n
function<\/span> morning<\/span>(){<\/span>\r\n    echo<\/span> '\u304a\u306f\u3088\u3046'<\/span>;<\/span>\r\n}<\/span>\r\nfunction<\/span> night<\/span>(){<\/span>\r\n    echo<\/span> '\u3053\u3093\u3070\u3093\u306f'<\/span>;<\/span>\r\n}<\/span>\r\n\r\n$res<\/span> =<\/span> function_exists<\/span>(<\/span>'night'<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$res<\/span>);<\/span> \/\/ bool(true)<\/span>\r\n\r\n$res<\/span> =<\/span> function_exists<\/span>(<\/span>'afternoon'<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$res<\/span>);<\/span> \/\/ bool(false)<\/span>\r\n<\/code><\/pre>\n
\u7531\u4e8e`isset`\u3001`echo`\u548c`print`\u7b49\u4e0d\u662f\u51fd\u6570\u800c\u662f\u8bed\u8a00\u7ed3\u6784\uff0c\u56e0\u6b64\u65e0\u6cd5\u901a\u8fc7\u53ef\u53d8\u51fd\u6570\u8fdb\u884c\u8c03\u7528\u3002\u5728PHP\u624b\u518c\u9875\u9762\u4e2d\u63d0\u5230\u7684\u6240\u6709\u5185\u5bb9\u90fd\u662f\u7c7b\u4f3c\u7684\u3002<\/p>\n
PHP\u624b\u518c-\u5173\u952e\u8bcd\u5217\u8868<\/p>\n
\u5173\u4e8e\u533f\u540d\u51fd\u6570
\n\u521b\u5efa\u4e34\u65f6\u51fd\u6570\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u51fd\u6570create_function()\u6765\u521b\u5efa\u533f\u540d\u51fd\u6570\u3002\u4e34\u65f6\u7528\u9014\u4f8b\u5982\u5728\u521b\u5efa\u51fd\u6570\uff08\u56de\u8c03\u51fd\u6570\uff09\u4ee5\u7528\u4f5c\u51fd\u6570\u53c2\u6570\u65f6\u3002\u533f\u540d\u51fd\u6570\u7684\u51fd\u6570\u540d\u662f\u81ea\u52a8\u5206\u914d\u7684\u968f\u673a\u540d\u79f0\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u8003\u8651\u51fd\u6570\u540d\u7684\u7e41\u7410\u5de5\u4f5c\u3002
\n\u5728create_function()\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u4e2d\uff0c\u60a8\u53ef\u4ee5\u6307\u5b9a\u8981\u4f20\u9012\u7ed9\u521b\u5efa\u7684\u533f\u540d\u51fd\u6570\u7684\u53c2\u6570\uff0c\u800c\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4ee5\u5305\u62ec\u5206\u53f7\u5728\u5185\u7684\u5f62\u5f0f\u63cf\u8ff0\u5904\u7406\u7684\u5185\u5bb9\u3002<\/p>\n
PHP\u624b\u518c: create_function \u2014 \u521b\u5efa\u533f\u540d\u51fd\u6570 (lambda\u8868\u8fbe\u5f0f)<\/p>\n
$fc<\/span> =<\/span> create_function<\/span>(<\/span>'$val'<\/span>,<\/span>'echo $val;'<\/span>);<\/span>\r\n$fc<\/span>(<\/span>'hello'<\/span>);<\/span> \/\/ hello<\/span>\r\nvar_dump<\/span>(<\/span>$fc<\/span>);<\/span> \/\/ string(9) \"lambda_1\" \/\/ lambda_1 \u3068\u3044\u3046\u540d\u524d\u304c\u81ea\u52d5\u3067\u632f\u3089\u308c\u3066\u3044\u308b<\/span>\r\n\r\n$fc<\/span> =<\/span> create_function<\/span>(<\/span>'$val'<\/span>,<\/span>'echo $val;'<\/span>);<\/span>\r\n$fc<\/span>(<\/span>'bye'<\/span>);<\/span> \/\/ bye<\/span>\r\nvar_dump<\/span>(<\/span>$fc<\/span>);<\/span> \/\/ string(9) \"lambda_2\" \/\/ lambda_2 \u3068\u3044\u3046\u540d\u524d\u304c\u81ea\u52d5\u3067\u632f\u3089\u308c\u3066\u3044\u308b<\/span>\r\n<\/code><\/pre>\n
\u305f\u3060\u3057\u3001\u3053\u306e create_function() \u3092\u7528\u3044\u305f\u533f\u540d\u95a2\u6570\u306e\u4f5c\u6210\u306f\u3001\u51e6\u7406\u5185\u5bb9\u3092\u7b2c\u4e8c\u5f15\u6570\u306b\u6587\u5b57\u5217\u3067\u8a18\u8f09\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u53ef\u8aad\u6027\u30fb\u4fdd\u5b88\u6027\u304c\u826f\u3044\u3068\u306f\u8a00\u3048\u305a\u3001PHP 7.2.0 \u3067\u975e\u63a8\u5968\u3068\u306a\u308a\u3001PHP 8.0.0 \u3067\u306f\u524a\u9664\u3055\u308c\u307e\u3057\u305f\u3002
\n\u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u3001PHP 5.3\u304b\u3089\u306f\u30e9\u30e0\u30c0\u95a2\u6570\u30fb\u7121\u540d\u95a2\u6570\u304c\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002
\n\u300c\u95a2\u6570\u540d\u3092\u4ed8\u3051\u308b\u5fc5\u8981\u304c\u306a\u3044\u300d\u300c\u95a2\u6570\u306e\u5f15\u6570\u3068\u3057\u3066\u7528\u3044\u308b\u305f\u3081\u306e\u95a2\u6570\uff08\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\uff09\u3092\u4f5c\u6210\u3059\u308b\u306e\u306b\u4fbf\u5229\u300d\u3068\u3044\u3046\u57fa\u672c\u7684\u306a\u4f4d\u7f6e\u4ed8\u3051\u306f\u533f\u540d\u95a2\u6570\u3068\u540c\u69d8\u3067\u3059\u3002<\/p>\n
PHP\u624b\u518c-\u533f\u540d\u51fd\u6570\uff08\u95ed\u5305\uff09<\/p>\n
\u6709\u4e00\u4e9b\u5167\u5efa\u51fd\u6578\u53ef\u4ee5\u5c07\u56de\u8abf\u51fd\u6578\u4f5c\u70ba\u53c3\u6578\u50b3\u905e\uff0c\u4f8b\u5982array_map()\u3001array_filter()\u3001array_walk()\u548cusort()\u3002<\/p>\n
PHP\u624b\u518c\uff1aarray_map \u2014 \u5c06\u56de\u8c03\u51fd\u6570\u5e94\u7528\u4e8e\u6307\u5b9a\u6570\u7ec4\u7684\u5143\u7d20
\nPHP\u624b\u518c\uff1aarray_filter \u2014 \u4f7f\u7528\u56de\u8c03\u51fd\u6570\u5bf9\u6570\u7ec4\u5143\u7d20\u8fdb\u884c\u8fc7\u6ee4
\nPHP\u624b\u518c\uff1aarray_walk \u2014 \u5c06\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\u5e94\u7528\u4e8e\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20
\nPHP\u624b\u518c\uff1ausort \u2014 \u4f7f\u7528\u7528\u6237\u5b9a\u4e49\u7684\u6bd4\u8f83\u51fd\u6570\u6309\u6570\u7ec4\u503c\u8fdb\u884c\u6392\u5e8f<\/p>\n
\u4f7f\u7528\u7528\u6237\u5b9a\u4e49\u51fd\u6570\u3001\u533f\u540d\u51fd\u6570\u548c\u65e0\u540d\u51fd\u6570\uff08lambda\u51fd\u6570\u548c\u95ed\u5305\uff09\u6765\u793a\u4f8b\u5229\u7528\u56de\u8c03\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u7684\u60c5\u51b5\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
function<\/span> square<\/span>(<\/span>$num<\/span>)<\/span>\r\n{<\/span>\r\n    return<\/span> $num<\/span> *<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n$arr<\/span> =<\/span> array<\/span>(<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>);<\/span>\r\n$res<\/span> =<\/span> array_map<\/span>(<\/span>'square'<\/span>,<\/span> $arr<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$res<\/span>);<\/span> \/\/ Array ( [0] => 1 [1] => 4 [2] => 9 )<\/span>\r\n<\/code><\/pre>\n
$func<\/span> =<\/span> create_function<\/span>(<\/span>'$num'<\/span>,<\/span>'return $num * $num;'<\/span>);<\/span>\r\n$arr<\/span> =<\/span> array<\/span>(<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>);<\/span>\r\n$res<\/span> =<\/span> array_map<\/span>(<\/span>$func<\/span>,<\/span> $arr<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$res<\/span>);<\/span> \/\/ Array ( [0] => 1 [1] => 4 [2] => 9 )<\/span>\r\n<\/code><\/pre>\n
\u5f53\u5c06\u533f\u540d\u51fd\u6570\u8d4b\u503c\u7ed9\u53d8\u91cf\u65f6\uff0c\u5fc5\u987b\u5728\u51fd\u6570\u7684\u6700\u540e\u6dfb\u52a0\u5206\u53f7\u3002<\/p>\n
$func<\/span> =<\/span> function<\/span>(<\/span>$num<\/span>)<\/span> {<\/span>\r\n    return<\/span> $num<\/span> *<\/span> $num<\/span>;<\/span>\r\n};<\/span> \/\/ \u2190\u30bb\u30df\u30b3\u30ed\u30f3\u304c\u5fc5\u8981\u3002\u306a\u3044\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3002<\/span>\r\n$arr<\/span> =<\/span> array<\/span>(<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>);<\/span>\r\n$res<\/span> =<\/span> array_map<\/span>(<\/span>$func<\/span>,<\/span> $arr<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$res<\/span>);<\/span> \/\/ Array ( [0] => 1 [1] => 4 [2] => 9 )<\/span>\r\n<\/code><\/pre>\n
\u5728\u5904\u7406PHP\u4ee3\u7801\u65f6\u8f93\u51faHTML\u7b49\u5185\u5bb9\u7684\u5c0f\u6280\u5de7
\n\u5982\u679c\u5728PHP\u4ee3\u7801\u4e2d\u51fa\u73b0\u4e86PHP\u7684\u7ed3\u675f\u6807\u7b7e?>\u548c\u5f00\u59cb\u6807\u7b7e\u548c\u5f00\u59cb\u6807\u7b7e \u7ec4\u5408\u88ab\u89c6\u4e3a\u4e00\u4e2aPHP\u4ee3\u7801\u5757\uff0c\u7b2c\u4e8c\u5bf9  \u7ec4\u5408\u53c8\u88ab\u89c6\u4e3a\u53e6\u4e00\u4e2aPHP\u4ee3\u7801\u5757\uff0c\u56e0\u6b64\u5728\u8fd9\u4e24\u4e2aPHP\u4ee3\u7801\u5757\u4e4b\u95f4\uff0c\u63d2\u5165\u4e86\u4e0d\u662fPHP\u4ee3\u7801\u7684\u7eaf\u6587\u672c\uff08\u8fd9\u4e9b\u6587\u672c\u6210\u4e3a\u51fd\u6570\u7684\u5185\u5bb9\uff09\uff0c\u8fd9\u6837\u5199\u53ef\u80fd\u66f4\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n
\u5173\u4e8ePHP\u7684\u7f16\u7801\u89c4\u8303
\n\u8003\u8651\u5230\u8003\u8bd5\u7684\u5185\u5bb9\u5e76\u4e0d\u76f8\u5173\uff0c\u4ee5\u4e0b\u5b8c\u5168\u662f\u79bb\u9898\u7684\u5185\u5bb9\u3002\u5982\u679c\u4e00\u4e2a\u6587\u4ef6\u53ea\u5305\u542bPHP\u4ee3\u7801\uff0c\u6700\u8fd1\u7684\u7f16\u7801\u60ef\u4f8b\u662f\u7701\u7565PHP\u4ee3\u7801\u7684\u7ed3\u675f\u6807\u8bb0”?>”\u3002\u8fd9\u662f\u56e0\u4e3a\u5728PHP\u7ed3\u675f\u6807\u8bb0\u540e\u9762\u6709\u591a\u4f59\u7684\u7a7a\u683c\u7b49\u5185\u5bb9\u65f6\uff0c\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u51fa\u73b0\u610f\u5916\u7684\u884c\u4e3a\u3002<\/p>\n
\u5173\u4e8e\u8fd9\u79cd\u7f16\u7801\u89c4\u8303\uff0c\u4e0d\u540c\u7684\u516c\u53f8\u548c\u7ec4\u7ec7\u53ef\u80fd\u89c4\u5b9a\u4e86\u5404\u79cd\u5185\u5bb9\uff0c\u4f46\u5176\u4e2d\u4e3b\u8981\u7684\u662f\u7531\u540d\u4e3aPHP-FIG\uff08Framework Interoperability Group\uff09\u7684\u56e2\u4f53\u5236\u5b9a\u7684\u88ab\u63a8\u8350\u7684\u6807\u51c6\u89c4\u8303\u300ePSR\uff08PHP Standards Recommendations\uff09\u300f\uff0c\u5efa\u8bae\u60a8\u9605\u8bfb\u4e00\u4e0b\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u82f1\u8bed\u539f\u7248\uff1a
\nPSR-2\uff1a\u7f16\u7801\u98ce\u683c\u6307\u5357<\/p>\n
\u63d0\u4f9b\u65e5\u672c\u8a9e\u7ffb\u8bd1\u7684\u9875\u9762
\nPSR-2\u7f16\u7801\u6307\u5357\uff08\u65e5\u672c\u8bed\uff09<\/p>\n
\u7531\u4e8ePSR-2\u5efa\u7acb\u5728PSR-1\u7684\u57fa\u7840\u4e0a\uff0c\u6240\u4ee5\u60f3\u8981\u4e86\u89e3PSR-1\u7684\u4eba\u53ef\u4ee5\u70b9\u51fb\u8fd9\u91cc\u3002
\nPSR-1\uff1a\u57fa\u672c\u7f16\u7801\u89c4\u8303\u3002<\/p>\n
\u8bf7\u53c2\u9605\u7f51\u5740\u3002PHP\u624b\u518c – return
\nPHP\u624b\u518c – \u7528\u6237\u5b9a\u4e49\u51fd\u6570
\n\u3010PHP\u6280\u672f\u8005\u3011\u51fd\u6570\u547d\u540d\u89c4\u5219\uff0c\u9002\u5f53\u7684\u8f93\u51fa\u5b57\u7b26\u8f6c\u4e49\u51fd\u6570\uff0c\u8fc7\u6ee4\u51fd\u6570\u7684\u884c\u4e3a\u7b49
\nPHP – \u4f7f\u7528\\x7f-xff\u5b57\u7b26\u7684\u51fd\u6570\u6216\u7c7b\u540d\u793a\u4f8b
\nPHP\uff08\u7f16\u7a0b\u8bed\u8a00\uff09- \u7ef4\u57fa\u767e\u79d1
\n\u5173\u4e8e\u4e0d\u8981\u5728PHP\u7684\u7ed3\u5c3e\u6807\u7b7e ?> \u6765\u8bb2\u4e2a\u6545\u4e8b
\nPHP\u4e2d\u4f7f\u7528lambda\u8868\u8fbe\u5f0f\u7f16\u5199\u51fd\u6570\u7684\u65b9\u6cd5\u3010\u521d\u5b66\u8005\u5411\u3011<\/p>\n","protected":false},"excerpt":{"rendered":"
\u9996\u5148\u8fd9\u662fPHP5\u9ad8\u7ea7\u8003\u8bd5\/\u51c6\u9ad8\u7ea7\u8003\u8bd5\u603b\u7ed3\u7684\u4e00\u90e8\u5206\uff0c\u662f\u5173\u4e8ePHP\u51fd\u6570\u7684\u9010\u6b65\u89e3\u91ca\u7684\u6587\u7ae0\u3002 \u8003\u8bd5\u5bf9\u8c61\u662fPHP5\uff0c\u4f46\u662f […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30107","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010php\u5165\u95e8\u3011\u4ec0\u4e48\u662fphp\u51fd\u6570\uff1f\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010php\u5165\u95e8\u3011\u4ec0\u4e48\u662fphp\u51fd\u6570\uff1f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-10-12T16:17:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-12T09:35:40+00:00\" \/>\n<meta name=\"author\" content=\"\u6587, \u7fd4\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6587, \u7fd4\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/\",\"name\":\"\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2023-10-12T16:17:08+00:00\",\"dateModified\":\"2025-08-12T09:35:40+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/64d5cc7727fffbff2f9a2a8da1de3e5c\"},\"description\":\"\u5173\u4e8e\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f\u7684\u6280\u672f\u6587\u7ae0\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/zh\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/64d5cc7727fffbff2f9a2a8da1de3e5c\",\"name\":\"\u6587, \u7fd4\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/920c3d673e0bccacc98e5e6b7149bb3c22edd8d39cb753e5d7d7e471498118a1?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/920c3d673e0bccacc98e5e6b7149bb3c22edd8d39cb753e5d7d7e471498118a1?s=96&d=mm&r=g\",\"caption\":\"\u6587, \u7fd4\"},\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/author\/wenxiang\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f - Blog - Silicon Cloud","description":"\u5173\u4e8e\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f\u7684\u6280\u672f\u6587\u7ae0","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/zh\/blog\/\u3010php\u5165\u95e8\u3011\u4ec0\u4e48\u662fphp\u51fd\u6570\uff1f\/","og_locale":"zh_CN","og_type":"article","og_title":"\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f","og_description":"\u5173\u4e8e\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f\u7684\u6280\u672f\u6587\u7ae0","og_url":"https:\/\/www.silicloud.com\/zh\/blog\/\u3010php\u5165\u95e8\u3011\u4ec0\u4e48\u662fphp\u51fd\u6570\uff1f\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2023-10-12T16:17:08+00:00","article_modified_time":"2025-08-12T09:35:40+00:00","author":"\u6587, \u7fd4","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"\u6587, \u7fd4","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"1 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/","url":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/","name":"\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website"},"datePublished":"2023-10-12T16:17:08+00:00","dateModified":"2025-08-12T09:35:40+00:00","author":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/64d5cc7727fffbff2f9a2a8da1de3e5c"},"description":"\u5173\u4e8e\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f\u7684\u6280\u672f\u6587\u7ae0","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/zh\/blog\/"},{"@type":"ListItem","position":2,"name":"\u3010PHP\u5165\u95e8\u3011\u4ec0\u4e48\u662fPHP\u51fd\u6570\uff1f"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website","url":"https:\/\/www.silicloud.com\/zh\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/64d5cc7727fffbff2f9a2a8da1de3e5c","name":"\u6587, \u7fd4","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/920c3d673e0bccacc98e5e6b7149bb3c22edd8d39cb753e5d7d7e471498118a1?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/920c3d673e0bccacc98e5e6b7149bb3c22edd8d39cb753e5d7d7e471498118a1?s=96&d=mm&r=g","caption":"\u6587, \u7fd4"},"url":"https:\/\/www.silicloud.com\/zh\/blog\/author\/wenxiang\/"},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e5%85%a5%e9%97%a8%e3%80%91%e4%bb%80%e4%b9%88%e6%98%afphp%e5%87%bd%e6%95%b0%ef%bc%9f\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/30107","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/comments?post=30107"}],"version-history":[{"count":3,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/30107\/revisions"}],"predecessor-version":[{"id":111681,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/30107\/revisions\/111681"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/media?parent=30107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/categories?post=30107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/tags?post=30107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}