{"id":30248,"date":"2024-02-14T11:18:45","date_gmt":"2023-01-23T15:07:56","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e5%87%bd%e6%95%b0\/"},"modified":"2025-08-12T18:17:26","modified_gmt":"2025-08-12T10:17:26","slug":"php%e7%9a%84%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e5%87%bd%e6%95%b0\/","title":{"rendered":"PHP\u7684\u51fd\u6570"},"content":{"rendered":"

PHP\u51fd\u6570\u7684\u7c7b\u578b<\/p>\n

\u51fd\u6570\u662f\u4e3a\u4e86\u5b58\u653e\u4e00\u4e9b\u5904\u7406\u6d41\u7a0b\u7684\u4e1c\u897f\u3002
\nPHP\u6709\u4e24\u79cd\u7c7b\u578b\u7684\u51fd\u6570\u3002
\n\u5206\u4e3a\u5185\u7f6e\u51fd\u6570\u548c\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\u3002<\/p>\n

\u5167\u5efa\u51fd\u6578<\/p>\n

\u8fd9\u662f\u5728PHP\u4e2d\u9884\u5148\u51c6\u5907\u597d\u7684\u4e00\u4e2a\u51fd\u6570\u3002<\/p>\n

\u60a8\u53ef\u4ee5\u5728\u4e0b\u65b9\u7684\u53c2\u8003\u8d44\u6599\u4e2d\u627e\u5230\u5404\u79cd\u5173\u4e8e\u8ba1\u7b97\u3001\u6587\u5b57\u683c\u5f0f\u5316\u3001\u6570\u7ec4\u548c\u6570\u636e\u5e93\u7b49\u5185\u5bb9\u7684\u4fe1\u606f\u3002<\/p>\n

PHP\u51fd\u6570\u53c2\u8003<\/a><\/p>\n

\u8bf7\u6ce8\u610f<\/p>\n

\u51fd\u6570\u7684\u6570\u91cf\u592a\u591a\uff0c\u51e0\u4e4e\u4e0d\u53ef\u80fd\u8bb0\u4f4f\u6240\u6709\u5185\u5bb9\u3002
\n\u4e0d\u9700\u8981\u8bb0\u4f4f\uff0c\u800c\u662f\u9700\u8981\u5c06\u60f3\u8981\u505a\u7684\u4e8b\u60c5\u7528\u8bed\u8a00\u8868\u8fbe\u51fa\u6765\uff0c\u4ee5\u4fbf\u80fd\u7acb\u5373\u8fdb\u884c\u67e5\u9605\u3002<\/p>\n

\u6587\u5b57\u5217\u51fd\u6570<\/p>\n

\u6211\u5011\u4f86\u770b\u770b\u5404\u7a2e\u5b57\u4e32\u51fd\u6578\u3002<\/p>\n

strlen\u662f\u6307\u5c06string\uff08\u6587\u5b57\u5217\uff09\u548clength\uff08\u9577\u3055\uff09\u7ed3\u5408\u8d77\u6765\uff0c\u8868\u793a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002<\/p>\n

\/\/\u6587\u5b57\u5217\u306e\u9577\u3055<\/span>\r\n$test<\/span> =<\/span> \"test\"<\/span>;<\/span>\r\necho<\/span> strlen<\/span>(<\/span>$test<\/span>);<\/span>\r\n\r\n\/\/4<\/span>\r\n<\/code><\/pre>\n
\u7136\u800c\uff0c\u7528\u65e5\u8bed\u8868\u8fbe\u5219\u4f1a\u8f93\u51fa\u4e3a9\u3002<\/p>\n
\/\/\u6587\u5b57\u5217\u306e\u9577\u3055<\/span>\r\n$test<\/span> =<\/span> \"\u30c6\u30b9\u30c8\"<\/span>;<\/span>\r\necho<\/span> strlen<\/span>(<\/span>$test<\/span>);<\/span>\r\n\/\/9<\/span>\r\n<\/code><\/pre>\n
\u7531\u4e8eUTF-8\u662f\u4e00\u79cd\u591a\u5b57\u8282\u5b57\u7b26\u96c6\uff0c\u636e\u8bf4\u65e5\u8bed\u5b57\u7b26\u5360\u75281\u4e2a\u5b57\u8282\u81f36\u4e2a\u5b57\u8282\u4e0d\u7b49\u3002
\n\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u8f93\u51fa\u4e3a9\u3002<\/p>\n
\u26ab\ufe0emb_strlen
\n\u9019\u500b\u51fd\u6578\u4ee3\u8868\u591a\u5b57\u7bc0\u9577\u5ea6(lenght)\uff0c\u5b83\u8fd4\u56de\u591a\u5b57\u7bc0\u7684\u9577\u5ea6\u3002<\/p>\n
$test<\/span> =<\/span> \"\u30c6\u30b9\u30c8\"<\/span>;<\/span>\r\necho<\/span> mb_strlen<\/span>(<\/span>$test<\/span>);<\/span>\r\n\/\/3<\/span>\r\n<\/code><\/pre>\n
mb\u662f\u57fa\u672c\u4e0a\u8207\u591a\u5b57\u7bc0\u76f8\u95dc\u7684\u3002<\/p>\n
\u5728\u9700\u8981\u66ff\u6362\u5b57\u7b26\u4e32\u65f6\u4f7f\u7528\u3002<\/p>\n
$test<\/span> =<\/span> \"\u6587\u5b57\u5217\u306e\u8a66\u9a13\u3067\u3059\"<\/span>;<\/span>\r\necho<\/span> str_replace<\/span>(<\/span>\"\u8a66\u9a13\"<\/span>,<\/span>\"\u30c6\u30b9\u30c8\"<\/span>,<\/span>$test<\/span>);<\/span>\r\n\/\/\u6587\u5b57\u5217\u306e\u30c6\u30b9\u30c8\u3067\u3059<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0e\u7206\u70b8
\n\u8fd9\u662f\u4e00\u4e2a\u6839\u636e\u6307\u5b9a\u7684\u5b57\u7b26\u4e32\u8fdb\u884c\u5206\u5272\u7684\u51fd\u6570\u3002<\/p>\n
echo<\/span> \"<pre>\"<\/span>;<\/span>\r\n$str<\/span> =<\/span>  \"\u6587\u5b57\u5217\u3092\u3001\u5206\u5272\u3059\u308b\"<\/span>;<\/span>\r\nvar_dump<\/span>(<\/span>explode<\/span>(<\/span>\"\u3001\"<\/span>,<\/span>$str<\/span>));<\/span>\r\necho<\/span> \"<\/pre>\"<\/span>;<\/span>\r\n\r\n\/\/array(2) {<\/span>\r\n \/\/   [0]=><\/span>\r\n \/\/   string(12) \"\u6587\u5b57\u5217\u3092\"<\/span>\r\n \/\/   [1]=><\/span>\r\n \/\/   string(12) \"\u5206\u5272\u3059\u308b\"<\/span>\r\n \/\/ }<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0eimplode\u51fd\u6570\u7528\u4e8e\u5c06\u7531\u6570\u7ec4\u6307\u5b9a\u7684\u591a\u4e2a\u5b57\u7b26\u4e32\u8fde\u63a5\u5728\u4e00\u8d77\u3002<\/p>\n
$str2<\/span> =<\/span> [<\/span>\"2022\"<\/span>,<\/span>\"04\"<\/span>,<\/span>\"07\"<\/span>];<\/span>\r\necho<\/span> implode<\/span>(<\/span>\"-\"<\/span>,<\/span>$str2<\/span>);<\/span>\r\n\r\n\/\/2022-04-07<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528join\u4e5f\u53ef\u4ee5\u4ee5\u540c\u6837\u7684\u65b9\u5f0f\u4f7f\u7528\u3002<\/p>\n
$date<\/span> =<\/span> [<\/span>\"2022\"<\/span>,<\/span>\"04\"<\/span>,<\/span>\"07\"<\/span>];<\/span>\r\necho<\/span> join<\/span>(<\/span>\"-\"<\/span>,<\/span>$date<\/span>);<\/span>\r\n\r\n\/\/2022-04-07<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0epreg_match\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u7528\u4e8e\u5728\u5b57\u7b26\u4e32\u4e2d\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u641c\u7d22\u5339\u914d\u6307\u5b9a\u6a21\u5f0f\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n
$string<\/span> =<\/span> \"\u6b63\u898f\u8868\u73fe\u306e\u6587\u5b57\u5217\u3092\u78ba\u8a8d\u3059\u308b\"<\/span>;<\/span>\r\n\r\necho<\/span> preg_match<\/span>(<\/span>\"\/\u6587\u5b57\u5217\/\"<\/span>,<\/span>$string<\/span>);<\/span>\r\n\/\/1<\/span>\r\n<\/code><\/pre>\n
\u4ece\u6307\u5b9a\u7684\u5b57\u7b26\u4e32\u4e2d\u83b7\u53d6\u5b50\u5b57\u7b26\u4e32\u3002<\/p>\n
echo<\/span> substr<\/span>(<\/span>\"ABCDEFG\"<\/span>,<\/span>0<\/span>);<\/span>\r\n\/\/ABCDEFG<\/span>\r\n\r\necho<\/span> \"<br>\"<\/span>;<\/span>\r\necho<\/span> substr<\/span>(<\/span>\"ABCDEFG\"<\/span>,<\/span>1<\/span>);<\/span>\r\n\/\/BCDEFG<\/span>\r\n\r\necho<\/span> \"<br>\"<\/span>;<\/span>\r\necho<\/span> substr<\/span>(<\/span>\"ABCDEFG\"<\/span>,<\/span>2<\/span>);<\/span>\r\n\/\/CDEFG<\/span>\r\n<\/code><\/pre>\n
\u5f53\u4f60\u641c\u7d22\u65e5\u8bed<\/p>\n
echo<\/span> substr<\/span>(<\/span>\"\u3055\u3044\u305f\u307e\u3051\u3093\"<\/span>,<\/span>1<\/span>);<\/span>\r\n\/\/\ufffd\ufffd\u3044\u305f\u307e\u3051\u3093<\/span>\r\n<\/code><\/pre>\n
\u7531\u4e8e\u6587\u5b57\u4e71\u7801\u7684\u95ee\u9898\uff0c\u5728\u8fd9\u91cc\u4f7f\u7528mub_substr\u548c\u591a\u5b57\u8282\u51fd\u6570\u6765\u89e3\u51b3\u3002<\/p>\n
echo<\/span> mb_substr<\/span>(<\/span>\"\u3055\u3044\u305f\u307e\u3051\u3093\"<\/span>,<\/span>1<\/span>);<\/span>\r\n\/\/\u3044\u305f\u307e\u3051\u3093<\/span>\r\n<\/code><\/pre>\n
\u6570\u7ec4\u7684\u51fd\u6570<\/p>\n
\u63a5\u4e0b\u6765\u6211\u4eec\u5c06\u770b\u4e00\u4e0b\u6570\u7ec4\u7684\u51fd\u6570\u3002<\/p>\n
\u4f7f\u7528array_push\u51fd\u6570\u5c06\u4e00\u4e2a\u6570\u7ec4\u8ffd\u52a0\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u3002<\/p>\n
$animal<\/span> =<\/span> [<\/span>\"\u72ac\"<\/span>,<\/span>\"\u732b\"<\/span>,<\/span>\"\u733f\"<\/span>];<\/span>\r\n\r\narray_push<\/span>(<\/span>$animal<\/span>,<\/span>\"\u30e9\u30a4\u30aa\u30f3\"<\/span>,<\/span>\"\u8c61\"<\/span>);<\/span>\r\n\r\necho<\/span> \"<pre>\"<\/span>;<\/span>\r\nvar_dump<\/span>(<\/span>$animal<\/span>);<\/span>\r\necho<\/span> \"<\/pre>\"<\/span>;<\/span>\r\n\r\n\/*\r\narray(5) {\r\n    [0]=>\r\n    string(3) \"\u72ac\"\r\n    [1]=>\r\n    string(3) \"\u732b\"\r\n    [2]=>\r\n    string(3) \"\u733f\"\r\n    [3]=>\r\n    string(12) \"\u30e9\u30a4\u30aa\u30f3\"\r\n    [4]=>\r\n    string(3) \"\u8c61\"\r\n  }\r\n*\/<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0earray_pop\u662f\u4e00\u4e2a\u7528\u4e8e\u53d6\u5f97\u6570\u7ec4\u672b\u5c3e\u7684\u51fd\u6570\u3002<\/p>\n
$animal<\/span> =<\/span> [<\/span>\"\u72ac\"<\/span>,<\/span>\"\u732b\"<\/span>,<\/span>\"\u733f\"<\/span>];<\/span>\r\narray_pop<\/span>(<\/span>$animal<\/span>);<\/span>\r\n\r\necho<\/span> \"<pre>\"<\/span>;<\/span>\r\nvar_dump<\/span>(<\/span>$animal<\/span>);<\/span>\r\necho<\/span> \"<\/pre>\"<\/span>;<\/span>\r\n\r\n\/*\r\narray(2) {\r\n  [0]=>\r\n  string(3) \"\u72ac\"\r\n  [1]=>\r\n  string(3) \"\u732b\"\r\n}\r\n*\/<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0earray_shift
\n\u914d\u5217\u306e\u5148\u982d\u3092\u53d6\u308b\u95a2\u6570<\/p>\n
$animal<\/span> =<\/span> [<\/span>\"\u72ac\"<\/span>,<\/span>\"\u732b\"<\/span>,<\/span>\"\u733f\"<\/span>];<\/span>\r\narray_shift<\/span>(<\/span>$animal<\/span>);<\/span>\r\n\r\nvar_dump<\/span>(<\/span>$animal<\/span>);<\/span>\r\n\r\n\/\/array(2) { [0]=> string(3) \"\u732b\" [1]=> string(3) \"\u733f\" }<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0earray_unshift\u662f\u4e00\u4e2a\u5728\u6570\u7ec4\u5f00\u5934\u6dfb\u52a0\u5143\u7d20\u7684\u51fd\u6570\u3002<\/p>\n
$animal<\/span> =<\/span> [<\/span>\"\u72ac\"<\/span>,<\/span>\"\u732b\"<\/span>,<\/span>\"\u733f\"<\/span>];<\/span>\r\narray_unshift<\/span>(<\/span>$animal<\/span>);<\/span>\r\n\r\nvar_dump<\/span>(<\/span>$animal<\/span>,<\/span>\"\u30b4\u30ea\u30e9\"<\/span>);<\/span>\r\n\r\n\/\/array(3) { [0]=> string(3) \"\u72ac\" [1]=> string(3) \"\u732b\" [2]=> string(3) \"\u733f\" } string(9) \"\u30b4\u30ea\u30e9\"<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0earray_unique\u51fd\u6570\u7528\u4e8e\u53bb\u9664\u6570\u7ec4\u4e2d\u7684\u91cd\u590d\u5143\u7d20<\/p>\n
$number<\/span> =<\/span> array<\/span>(<\/span>100<\/span>,<\/span>300<\/span>,<\/span>500<\/span>,<\/span>100<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>array_unique<\/span>(<\/span>$number<\/span>));<\/span>\r\n\r\n\/\/Array ( [0] => 100 [1] => 300 [2] => 500 )<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0earray_reverse
\n\u914d\u5217\u306e\u5024\u306e\u9806\u5e8f\u3092\u9006\u306b\u3059\u308b\u95a2\u6570<\/p>\n
$number<\/span> =<\/span> array<\/span>(<\/span>100<\/span>,<\/span>300<\/span>,<\/span>500<\/span>,<\/span>1000<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>array_reverse<\/span>(<\/span>$number<\/span>));<\/span>\r\n\/\/Array ( [0] => 1000 [1] => 500 [2] => 300 [3] => 100 )<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0earray_slice
\n\u7b2c\u4e00\u5f15\u6570\u306e\u914d\u5217\u304b\u3089\u9023\u7d9a\u3057\u305f\u8981\u7d20\u3092\u5207\u308a\u53d6\u308b\u914d\u5217\u95a2\u6570<\/p>\n
$number<\/span> =<\/span> array<\/span>(<\/span>100<\/span>,<\/span>300<\/span>,<\/span>500<\/span>,<\/span>1000<\/span>,<\/span>2000<\/span>);<\/span>\r\n$numbers<\/span> =<\/span> array_slice<\/span>(<\/span>$number<\/span>,<\/span>0<\/span>,<\/span>3<\/span>);<\/span>\r\n\r\nprint_r<\/span>(<\/span>$numbers<\/span>);<\/span>\r\n\/\/Array ( [0] => 100 [1] => 300 [2] => 500 )<\/span>\r\n<\/code><\/pre>\n
\u56e0\u4e3a\u8fd8\u6709\u5f88\u591a\u5176\u4ed6\u9009\u9879\uff0c\u6240\u4ee5\u8bf7\u60a8\u591a\u505a\u4e00\u4e9b\u8c03\u67e5\u3002<\/p>\n
\u6613\u61c2\u7684\u914d\u5217\u51fd\u6570\u6587\u7ae0<\/a><\/p>\n
\u6570\u7ec4\u51fd\u6570\u7684\u53c2\u8003\u6587\u6863<\/a><\/p>\n
\u9a7c\u5cf0\u5f0f\u547d\u540d\u6cd5\u548c\u86c7\u5f0f\u547d\u540d\u6cd5<\/p>\n
\u6211\u5011\u5206\u5225\u4f86\u770b\u4e0a\u8ff0\u7684\u5169\u500b\u9078\u9805\u3002<\/p>\n
\u9a7c\u5cf0\u547d\u540d\u6cd5
\n\u9996\u5b57\u6bcd\u5c0f\u5199\u7684\u5b57\u7b26\u4e32<\/p>\n
studyProgrammingCode<\/span>()<\/span>\r\n<\/code><\/pre>\n
\u26ab\ufe0e\u86c7\u54ac\u9a7c\u5cf0\u6cd5\u547d\u540d\u6cd5
\n\u4f7f\u7528\u4e0b\u5212\u7ebf(_)\u8fde\u63a5\u7684\u5355\u8bcd\u7ec4\u5b57\u7b26<\/p>\n
study_programming_code<\/span>()<\/span>\r\n<\/code><\/pre>\n
\u8bf7\u63d0\u4f9b\u76f8\u5173\u8d44\u6599<\/a><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
PHP\u51fd\u6570\u7684\u7c7b\u578b \u51fd\u6570\u662f\u4e3a\u4e86\u5b58\u653e\u4e00\u4e9b\u5904\u7406\u6d41\u7a0b\u7684\u4e1c\u897f\u3002 PHP\u6709\u4e24\u79cd\u7c7b\u578b\u7684\u51fd\u6570\u3002 \u5206\u4e3a\u5185\u7f6e\u51fd\u6570\u548c\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\u3002 […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30248","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\nPHP\u7684\u51fd\u6570 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8ePHP\u7684\u51fd\u6570\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\/php\u7684\u51fd\u6570\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP\u7684\u51fd\u6570\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8ePHP\u7684\u51fd\u6570\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u7684\u51fd\u6570\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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