{"id":30207,"date":"2022-11-09T11:06:56","date_gmt":"2023-05-02T08:21:28","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%ad%86%e8%a8%98%e6%9c%ac%e9%96%b1%e8%ae%80%e3%80%8cphp-cookbook%e3%80%8d%e5%92%8c%e3%80%8c%e5%88%9d%e5%ad%b8php%e3%80%8d%ef%bc%88%e9%99%a3%e5%88%97%e9%80%b2%e9%9a%8e%e7%b7%a8%ef%bc%89php\/"},"modified":"2025-08-12T18:05:13","modified_gmt":"2025-08-12T10:05:13","slug":"%e7%ad%86%e8%a8%98%e6%9c%ac%e9%96%b1%e8%ae%80%e3%80%8cphp-cookbook%e3%80%8d%e5%92%8c%e3%80%8c%e5%88%9d%e5%ad%b8php%e3%80%8d%ef%bc%88%e9%99%a3%e5%88%97%e9%80%b2%e9%9a%8e%e7%b7%a8%ef%bc%89php","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%ad%86%e8%a8%98%e6%9c%ac%e9%96%b1%e8%ae%80%e3%80%8cphp-cookbook%e3%80%8d%e5%92%8c%e3%80%8c%e5%88%9d%e5%ad%b8php%e3%80%8d%ef%bc%88%e9%99%a3%e5%88%97%e9%80%b2%e9%9a%8e%e7%b7%a8%ef%bc%89php\/","title":{"rendered":"[\u7b46\u8a18\u672c]\u95b1\u8b80\u300cPHP Cookbook\u300d\u548c\u300c\u521d\u5b78PHP\u300d\uff08\u9663\u5217\u9032\u968e\u7de8\uff09PHP"},"content":{"rendered":"

\u914d\u5217\u5e94\u7528\u7f16\uff08\u5373\u5c06\u66f4\u65b0\uff09<\/p>\n

\u5f53\u4e0d\u5e0c\u671b\u6570\u7ec4\u7684\u521d\u59cb\u7d22\u5f15\u4e3a0\u65f6\uff1a<\/p>\n
\/\/\u6574\u6570\u306e\u8ca0\u6570\u3001\u975e\u6574\u6570\u3067\u3082\u53ef\u80fd<\/span>\r\n$presidents<\/span>=<\/span>array<\/span>(<\/span>1<\/span>=><\/span>'Washington'<\/span>,<\/span>'Adams'<\/span>,<\/span>'Jefferson'<\/span>,<\/span>'Madison'<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$presidents<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u628a\u591a\u4e2a\u5143\u7d20\u4fdd\u5b58\u5728\u4e00\u4e2a\u952e\u4e2d\u3002<\/p>\n
$fruits<\/span>=<\/span>array<\/span>(<\/span>'red'<\/span>=><\/span>array<\/span>(<\/span>'starwberry'<\/span>,<\/span>'apple'<\/span>),<\/span>'yellow'<\/span>=><\/span>array<\/span>(<\/span>'banana'<\/span>));<\/span>\r\n<\/code><\/pre>\n
\u6216\u8005\u4f7f\u7528\u7269\u4ef6<\/p>\n
\u5f53\u60f3\u8981\u53d1\u6325\u529b\u91cf\u65f6\uff1a<\/p>\n
$fruits<\/span>=<\/span>array<\/span>(<\/span>'red'<\/span>=><\/span>array<\/span>(<\/span>'starwberry'<\/span>,<\/span>'apple'<\/span>),<\/span>'yellow'<\/span>=><\/span>array<\/span>(<\/span>'banana'<\/span>));<\/span>\r\nforeach<\/span> (<\/span>$fruits<\/span> as<\/span> $color<\/span>=><\/span>$color_fruit<\/span>)<\/span> {<\/span>\r\n    foreach<\/span> (<\/span>$color_fruit<\/span> as<\/span> $fruit<\/span>){<\/span>\r\n        print<\/span> \"<\/span>$fruit<\/span> is colored <\/span>$color<\/span>.<br>\"<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u751f\u6210\u4e00\u4e2a\u8fde\u7eed\u7684\u6570\u7684\u6570\u7ec4\u3002<\/p>\n
$cards<\/span>=<\/span>range<\/span>(<\/span>1<\/span>,<\/span>52<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5373\u4f7f\u589e\u52a0\u91cf\u4e0d\u4e3a1\uff0c\u4e5f\u53ef\u4ee5\u8fdb\u884c\u589e\u52a0\u3002<\/p>\n
$even<\/span>=<\/span>range<\/span>(<\/span>2<\/span>,<\/span>52<\/span>,<\/span>2<\/span>);<\/span>\r\n<\/code><\/pre>\n
4. \u4f7f\u7528\u5faa\u73af\u5904\u7406\u6570\u7ec4<\/p>\n
\/\/\u65b9\u6cd5\uff11\u3000\u5024\u3092\u9806\u306b\u51e6\u7406\u3057\u305f\u3044\u5834\u5408<\/span>\r\nforeach<\/span>(<\/span>$array<\/span> as<\/span> $value<\/span>){<\/span>\r\n    \/\/\u51e6\u7406<\/span>\r\n}<\/span>\r\n\r\n\/\/\u65b9\u6cd52 \u30ad\u30fc\u306e\u4f7f\u7528\u304c\u5fc5\u8981\u306a\u5834\u5408<\/span>\r\nforeach<\/span>(<\/span>$array<\/span> as<\/span> $key<\/span>=><\/span>$value<\/span>){<\/span>\r\n    \/\/\u51e6\u7406<\/span>\r\n}<\/span>\r\n\r\n\/\/\u65b9\u6cd5\uff13\u3000for\u30eb\u30fc\u30d7\u3067\u51e6\u7406<\/span>\r\nfor<\/span>(<\/span>$key<\/span>,<\/span>$size<\/span>=<\/span>count<\/span>(<\/span>$array<\/span>);<\/span>$key<\/span><<\/span>$size<\/span>;<\/span>$key<\/span>++<\/span>){<\/span>\r\n    \/\/\u51e6\u7406<\/span>\r\n\r\n}<\/span>\r\n\r\n\/\/\u65b9\u6cd5\uff14\u3000list()\u3068while\u3067each()\u3092\u4f7f\u7528<\/span>\r\nwhile<\/span>(<\/span>list<\/span>(<\/span>$key<\/span>,<\/span>$value<\/span>)<\/span>=<\/span>each<\/span>(<\/span>$array<\/span>)){<\/span>\r\n    \/\/\u51e6\u7406<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
\u8bf4\u660e\uff1a
\n\u5bf9\u4e8eforeach\u60c5\u51b5\u800c\u8a00\uff0c\u5904\u7406\u7684\u662f\u6570\u7ec4\u7684\u526f\u672c\uff0c\u800c\u4e0d\u662f\u539f\u6765\u7684\u6570\u7ec4\u672c\u8eab\u3002
\n\u76f8\u53cd\u5730\uff0c\u5bf9\u4e8efor\u548ceach()\u60c5\u51b5\u800c\u8a00\uff0c\u5904\u7406\u7684\u662f\u6570\u7ec4\u672c\u8eab\u7684\u5143\u7d20\u3002
\n\u56e0\u6b64\uff0c\u5982\u679c\u4f7f\u7528foreach\u7684\u8bdd\uff0c\u9700\u8981\u76f4\u63a5\u5f15\u7528\u6570\u7ec4\u672c\u8eab\u3002<\/p>\n
\r\n\/\/$cost\u3092\u4f7f\u7528\u3057\u3066\u3082\u7121\u52b9<\/span>\r\nforeach<\/span>(<\/span>$items<\/span> as<\/span> $item<\/span>=><\/span>$cost<\/span>){<\/span>\r\n    if<\/span>(<\/span>!<\/span>in_stock<\/span>(<\/span>$item<\/span>)){<\/span>\r\n    unset<\/span>(<\/span>$items<\/span>[<\/span>$item<\/span>]);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u4f7f\u7528for\u5faa\u73af\u65f6\uff0c\u4f7f\u7528count()\u51fd\u6570\u5c06\u6570\u7ec4\u7684\u5927\u5c0f\u4fdd\u5b58\u5230\u53d8\u91cf\u4e2d\u662f\u9ad8\u6548\u7684\u3002<\/p>\n
\uff0a\u9700\u8fdb\u884c\u7279\u522b\u5904\u7406\u65f6\uff1a<\/p>\n
\r\n\/\/$f\u306f\u51e6\u7406\u306efunction<\/span>\r\narray_map<\/span>(<\/span>$f<\/span>,<\/span>$array<\/span>);<\/span>\r\n<\/code><\/pre>\n
\/\/\u5168\u3066\u306e\u5358\u8a9e\u3092\u5c0f\u6587\u5b57\u306b\uff1a<\/span>\r\n$words<\/span>=<\/span>array<\/span>(<\/span>'Emc'<\/span>,<\/span>'GOforit'<\/span>,<\/span>'Japan'<\/span>);<\/span>\r\n$lc<\/span>=<\/span>array_map<\/span>(<\/span>'strtolower'<\/span>,<\/span>$words<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$lc<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u4e0d\u786e\u5b9a\u662f\u5426\u4e3a\u6570\u7ec4\u65f6\u5e94\u91c7\u53d6\u7684\u4fdd\u62a4\u63aa\u65bd\uff1a<\/p>\n
if<\/span>(<\/span>is_array<\/span>(<\/span>$items<\/span>)){<\/span>\r\n    \/\/\u914d\u5217\u3067\u3059\u306e\u3067\u3001\u51e6\u7406\u3059\u308b<\/span>\r\n}<\/span>else<\/span>{<\/span>\r\n    \/\/\u914d\u5217\u3067\u306a\u3044\u306e\u3067\u3001\u5225\u306e\u51e6\u7406<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
5. \u6211\u60f3\u8981\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\u3002
\n\u5f53\u60f3\u8981\u5220\u9664\u591a\u4e2a\u8981\u7d20\uff0c\u6216\u8005\u8981\u5220\u9664\u7684\u5185\u5bb9\u4e0d\u662f\u8fde\u7eed\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u4f7f\u7528unset()\u51fd\u6570\u3002<\/p>\n
unset<\/span>(<\/span>$e<\/span>)<\/span>\r\nunset<\/span>(<\/span>$e1<\/span>,<\/span>$e2<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u901a\u8fc7\u4f7f\u7528unset\u529f\u80fd\u8fdb\u884c\u8c03\u67e5\u7684\u7ed3\u679c\u662f\uff0c<\/p>\n
$array<\/span>=<\/span>array<\/span>(<\/span>'aaa'<\/span>,<\/span>'bbb'<\/span>,<\/span>'ccc'<\/span>,<\/span>'ddd'<\/span>);<\/span>\r\nunset<\/span>(<\/span>$array<\/span>[<\/span>0<\/span>]);<\/span>\r\nvar_dump<\/span>(<\/span>$array<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u52aa\u529b\u662f\u529b\u91cf\u7684\u6765\u6e90\u3002<\/p>\n
array<\/span>(<\/span>3<\/span>)<\/span> {<\/span> [<\/span>1<\/span>]<\/span>=><\/span> string<\/span>(<\/span>3<\/span>)<\/span> \"bbb\"<\/span> [<\/span>2<\/span>]<\/span>=><\/span> string<\/span>(<\/span>3<\/span>)<\/span> \"ccc\"<\/span> [<\/span>3<\/span>]<\/span>=><\/span> string<\/span>(<\/span>3<\/span>)<\/span> \"ddd\"<\/span> }<\/span>\r\n<\/code><\/pre>\n
\u56e0\u6b64\uff0c\u7d22\u5f15\u4e0d\u4f1a\u6539\u53d8\uff0c\u56e0\u6b64\u6570\u7ec4\u7684\u7d22\u5f15\u4e0d\u4f1a\u88ab\u538b\u7f29\uff0c\u5220\u9664\u540e\u6570\u7ec4\u4e2d\u4f1a\u4fdd\u7559\u7a7a\u95f4\u3002<\/p>\n
\u9664\u4e86\u4f7f\u7528 unset \u5916\uff0c\u8fd8\u6709\u4e00\u79cd\u65b9\u6cd5\u662f\u4f20\u9012\u7a7a\u503c\u3002\u4e0e unset \u4e0d\u540c\u7684\u662f\uff0c\u8be5\u5143\u7d20\u4ecd\u7136\u5b58\u5728\u3002
\n\u5982\u679c\u6253\u7b97\u653e\u5165\u65b0\u503c\uff0c\u53ef\u4ee5\u9009\u62e9\u4f20\u9012\u7a7a\u503c\u6216 0 \u7ed9\u5143\u7d20\u3002<\/p>\n
$array<\/span>[<\/span>3<\/span>]<\/span>=<\/span>$array<\/span>[<\/span>'foo'<\/span>]<\/span>=<\/span>''<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5f53\u4f60\u4e0d\u60f3\u4fdd\u7559\u7a7a\u767d\u65f6\uff0c\u60f3\u8981\u8fde\u7eed\u5220\u9664\u5143\u7d20\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\uff1a<\/p>\n
array_splice<\/span>(<\/span>$array<\/span>,<\/span>$offset<\/span>,<\/span>$length<\/span>,[<\/span>$replacement<\/span>]);<\/span>\r\n<\/code><\/pre>\n
\u53c8\u6216\u8005<\/p>\n
array_values<\/span>(<\/span>$array<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u53ef\u4ee5\u4f7f\u7528array_values\u51fd\u6570\u6765\u7d27\u51d1\u5730\u586b\u5145\u6570\u7ec4\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u6570\u5b57\u5c06\u6210\u4e3a\u7d22\u5f15\u7684\u60c5\u51b5\u3002<\/p>\n
\uff0a\u5220\u9664\u6570\u7ec4\u672b\u5c3e\u7684\u5143\u7d20\uff1a<\/p>\n
array_pop<\/span>()<\/span>\r\n<\/code><\/pre>\n
\u5220\u9664\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002<\/p>\n
array_shift<\/span>()<\/span>\r\n<\/code><\/pre>\n
\u6269\u5927\u6216\u7f29\u5c0f\u6570\u7ec4\u5c3a\u5bf8\u3002* \u4f7f\u7528array_pad()\u51fd\u6570\u6269\u5927\u6570\u7ec4\u3002<\/p>\n
array_pad<\/span>(<\/span>$array<\/span>,<\/span>$pad_size<\/span>,<\/span>$pad_value<\/span>)<\/span>\r\n<\/code><\/pre>\n
$array<\/span>=<\/span>array<\/span>(<\/span>'apple'<\/span>,<\/span>'banana'<\/span>,<\/span>'cocount'<\/span>);<\/span>\r\n$array<\/span>=<\/span>array_pad<\/span>(<\/span>$array<\/span>,<\/span>5<\/span>,<\/span>''<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$array<\/span>);<\/span>\r\n\/\/pad_size \u306f\u8ca0\u6570\u306e\u5834\u5408\u3001\u914d\u5217\u306e\u982d\u304b\u3089\u914d\u5217\u306e\u9577\u3055\u304cpad_size\u306b\u306a\u308b\u307e\u3067pad_value\u3092\u52a0\u5165<\/span>\r\n$array<\/span>=<\/span>array_pad<\/span>(<\/span>$array<\/span>,<\/span>-<\/span>7<\/span>,<\/span>'zucchini'<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$array<\/span>);<\/span>\r\n<\/code><\/pre>\n
* \u4f7f\u7528array_splice()\u51fd\u6570\u6765\u7f29\u5c0f\u6570\u7ec4\u7684\u5927\u5c0f\u3002<\/p>\n
\/\/\u6ce8\u610f\u70b9\uff1aarray_splice()\u8fd4\u5374\u3057\u305f\u306e\u306f\u524a\u9664\u3055\u308c\u305f\u914d\u5217\u3002$array\u306b\u4ee3\u5165\u3057\u306a\u3044\u3053\u3068\u3002<\/span>\r\narray_splice<\/span>(<\/span>$array<\/span>,<\/span>$offset<\/span>)<\/span>\r\n<\/code><\/pre>\n
7. \u5c06\u4e00\u4e2a\u6570\u7ec4\u6dfb\u52a0\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002
\n1. \u4f7f\u7528 array_merge() \u65b9\u6cd5<\/p>\n
\/\/\u6ce8\u610f\u70b9\u3000merge\u3055\u308c\u305f\u914d\u5217\u306b\u91cd\u8907\u306e\u30ad\u30fc\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u5143\u306e\u8981\u7d20\u306e\u5024\u304cmerge\u3059\u308b\u65b0\u3057\u3044\u8981\u7d20\u306e\u5024\u306b\u306a\u308b<\/span>\r\n$p_languages<\/span>=<\/span>array<\/span>(<\/span>'Perl'<\/span>,<\/span>'PHP'<\/span>);<\/span>\r\n$p_languages<\/span>=<\/span>array_merge<\/span>(<\/span>$p_languages<\/span>,<\/span>array<\/span>(<\/span>'Python'<\/span>));<\/span>\r\nprint_r<\/span>(<\/span>$p_languages<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528\u65b9\u6cd52<\/p>\n
\/\/\u6ce8\u610f\u70b9\u3000merge\u3068\u9055\u3063\u3066\u3001\u91cd\u8907\u306e\u30ad\u30fc\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\uff0b\u306e\u5de6\u306e\u5024\u3092\u63a1\u7528\u3059\u308b\u3002<\/span>\r\n$uc<\/span>=<\/span>array<\/span>(<\/span>'a'<\/span>,<\/span>'b'<\/span>=><\/span>'B'<\/span>);<\/span>\r\n$lc<\/span>=<\/span>array<\/span>(<\/span>'a'<\/span>,<\/span>'b'<\/span>=><\/span>'b'<\/span>);<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\nprint_r<\/span>(<\/span>$uc<\/span>+<\/span>$lc<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$lc<\/span>+<\/span>$uc<\/span>);<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\nprint_r<\/span>(<\/span>$uc<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$lc<\/span>);<\/span>\r\n<\/code><\/pre>\n
8. \u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u4f7f\u7528join()\u65b9\u6cd5<\/p>\n
join<\/span>(<\/span>$glue<\/span>,<\/span>$array<\/span>);<\/span>\r\n<\/code><\/pre>\n
$array<\/span>=<\/span>array<\/span>(<\/span>'mama'<\/span>,<\/span>'papa'<\/span>,<\/span>'me'<\/span>);<\/span>\r\n$string<\/span>=<\/span>join<\/span>(<\/span>','<\/span>,<\/span>$array<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$string<\/span>);<\/span>\r\n<\/code><\/pre>\n
\/\/\u4f8b\uff1a\u8981\u7d20\u3092b\u30bf\u30b0\u306e\u4e2d\u306b\u5165\u308c\u308b<\/span>\r\n$html<\/span>=<\/span>array<\/span>(<\/span>'gogogo'<\/span>,<\/span>'oleoleole'<\/span>,<\/span>'nono'<\/span>);<\/span>\r\n$left<\/span>=<\/span>'<b>'<\/span>;<\/span>\r\n$right<\/span>=<\/span>'<\/b>'<\/span>;<\/span>\r\n\r\n$html<\/span>=<\/span>$left<\/span>.<\/span>join<\/span>(<\/span>\"<\/span>$right<\/span>,<\/span>$left<\/span>\"<\/span>,<\/span>$html<\/span>)<\/span>.<\/span>$right<\/span>;<\/span>\r\nprint<\/span> $html<\/span>;<\/span>\r\n<\/code><\/pre>\n
9. \u8fd9\u4e2a\u6570\u7ec4\u5185\u662f\u5426\u5b58\u5728\u7279\u5b9a\u7684\u5173\u952e\u5b57\uff1f\u4f7f\u7528array_key_exists()\u8fdb\u884c\u5224\u65ad<\/p>\n
array_key_exists<\/span>(<\/span>'key'<\/span>,<\/span>$array<\/span>)<\/span>\u3000<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u60f3\u8981\u68c0\u67e5\u503c\u4e0d\u4e3anull\u7684\u952e\uff1a<\/p>\n
if<\/span>(<\/span>isset<\/span>(<\/span>$array<\/span>[<\/span>'key'<\/span>])){<\/span>\r\n   \/\/\u914d\u5217array\u306e\u4e2d\u306b\u3001\u30ad\u30fc\u2019key\u2019\u306b\u5bfe\u5fdc\u3059\u308b\u5024\u304cnull\u3067\u306f\u306a\u3044\u3068\u304d\u3001\u4ee5\u4e0b\u306e\u51e6\u7406\u3092\u884c\u3046<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u60f3\u8981\u68c0\u67e5\u6307\u5b9a\u5143\u7d20\u7684\u503c\u662f\u5426\u5b58\u5728\u4e8e\u6570\u7ec4\u4e2d\u3002
\n\u5982\u679c\u8981\u67e5\u627e\u7684\u503c\u8f83\u5c11\uff0c\u5219\u4f7f\u7528in_array\uff08\uff09\u51fd\u6570\u3002<\/p>\n
\/\/in_array\uff08\uff09\u53b3\u5bc6\u306b\u6bd4\u8f03\u3059\u308b\u3068\u304d\u306btrue\u3092\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u3057\u3066\u4ee3\u5165<\/span>\r\n$book_collection<\/span>=<\/span>array<\/span>(<\/span>'Emma'<\/span>,<\/span>'Price and Prejudice'<\/span>,<\/span>'Northhanger Abbey'<\/span>);<\/span>\r\n$book<\/span>=<\/span>'Sense and Sensibility'<\/span>;<\/span>\r\nif<\/span>(<\/span>in_array<\/span>(<\/span>$book<\/span>,<\/span>$book_collection<\/span>,<\/span>true<\/span>)){<\/span>\r\n    echo<\/span> \"Own it\"<\/span>;<\/span>\r\n}<\/span>else<\/span>{<\/span>\r\n    echo<\/span> \"Need it\"<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\/\/\u63a2\u3057\u305f\u3044\u5024\u304c\u591a\u6570\uff1a<\/span>\r\n$book_collection<\/span>=<\/span>array<\/span>(<\/span>'Emma'<\/span>,<\/span>'Price and Prejudice'<\/span>,<\/span>'Northhanger Abbey'<\/span>);<\/span>\r\n$book<\/span>=<\/span>array<\/span>(<\/span>'Sense and Sensibility'<\/span>,<\/span>'Emma'<\/span>);<\/span>\r\n\/\/\u672c\u306e\u540d\u524d\u306f\u30ad\u30fc\u3001\u5024\u306f\u6574\u6570\u306b\u306a\u308b<\/span>\r\n$book_collection<\/span>=<\/span>array_flip<\/span>(<\/span>$book_collection<\/span>);<\/span>\r\n\/\/print_r($book_collection);<\/span>\r\nforeach<\/span> (<\/span>$book<\/span> as<\/span> $item<\/span>){<\/span>\r\n    if<\/span>(<\/span>isset<\/span>(<\/span>$book_collection<\/span>[<\/span>$item<\/span>])){<\/span>\r\n        echo<\/span> \"Own <\/span>$item<\/span>\"<\/span>;<\/span>\r\n    }<\/span>else<\/span>{<\/span>\r\n        echo<\/span> \"Need <\/span>$item<\/span>\"<\/span>;<\/span>\r\n    }<\/span>\r\n    print<\/span> \"<br>\"<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
11. \u6211\u60f3\u8981\u67e5\u627e\u7ed9\u5b9a\u5143\u7d20\u7684\u4f4d\u7f6e\u3002
\n\u4f7f\u7528array_search()\u51fd\u6570<\/p>\n
\/\/array_search()\u3000\u63a2\u3057\u305f\u3044\u5024\u304c\u898b\u3064\u304b\u308b\u5834\u5408\uff1a\u30ad\u30fc\u304c\u8fd4\u5374\u3055\u308c\u308b\u3000\u898b\u3064\u304b\u3089\u306a\u304b\u3063\u305f\u5834\u5408\u3001false\u304c\u8fd4\u5374\u3055\u308c\u308b<\/span>\r\n$array<\/span>=<\/span>array<\/span>(<\/span>'Emma'<\/span>,<\/span>'Price and Prejudice'<\/span>,<\/span>'Northhanger Abbey'<\/span>);<\/span>\r\n$value<\/span>=<\/span>'Emma'<\/span>;<\/span>\r\n$position<\/span>=<\/span>array_search<\/span>(<\/span>$value<\/span>,<\/span>$array<\/span>);<\/span>\r\n\/\/\u3054\u6ce8\u610f\u3001\u7d50\u679c0\u306e\u5834\u5408\u306f\u3001$position!==false\u3067\u30c1\u30a7\u30c3\u30af<\/span>\r\nif<\/span>(<\/span>$position<\/span>!==<\/span>false<\/span>){<\/span>\r\n    print<\/span> \"getted in <\/span>$position<\/span>\"<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\/\/array_search\u3092\u4f7f\u7528<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\n$favorite_foods<\/span> =<\/span> array<\/span>(<\/span>1<\/span> =><\/span> 'artichokes'<\/span>,<\/span> 'bread'<\/span>,<\/span> 'cauliflower'<\/span>,<\/span> 'deviled eggs'<\/span>);<\/span>\r\n$food<\/span> =<\/span> 'cauliflower'<\/span>;<\/span>\r\n$position<\/span> =<\/span> array_search<\/span>(<\/span>$food<\/span>,<\/span> $favorite_foods<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$position<\/span>);<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\nif<\/span> (<\/span>$position<\/span> !==<\/span> false<\/span>)<\/span> {<\/span>\r\n    echo<\/span> \"My #<\/span>$position<\/span> favorite food is <\/span>$food<\/span>\"<\/span>;<\/span>\r\n}<\/span>else<\/span>{<\/span>\r\n    echo<\/span> \"Blech! I hate <\/span>$food<\/span>!\"<\/span>;<\/span>\r\n}<\/span>\r\n\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\n\r\n\/\/\u30ad\u30fc\u304c\u6570\u5b57\u3067\u306a\u304f\u3066\u3082ok<\/span>\r\n$favorite_foods<\/span> =<\/span> array<\/span>(<\/span>'a'<\/span> =><\/span> 'artichokes'<\/span>,<\/span> 'b'<\/span>=><\/span>'bread'<\/span>,<\/span> 'b2'<\/span>=><\/span>'bread'<\/span>,<\/span>'c'<\/span>=><\/span>'cauliflower'<\/span>,<\/span> 'd'<\/span>=><\/span>'deviled eggs'<\/span>);<\/span>\r\n$food<\/span> =<\/span> 'cauliflower'<\/span>;<\/span>\r\n$position<\/span> =<\/span> array_search<\/span>(<\/span>$food<\/span>,<\/span> $favorite_foods<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$position<\/span>);<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\n<\/code><\/pre>\n
12. \u5206\u6790\u6ee1\u8db3\u9700\u6c42\u548c\u8981\u6c42\u7684\u8981\u7d20
\n\u5982\u679c\u4f7f\u7528array_filter()\uff0c\u5219\u65e0\u6cd5\u5728\u4e2d\u9014\u505c\u6b62\uff0c\u56e0\u6b64\u4f7f\u7528foreach\u66f4\u65b9\u4fbf\u3002<\/p>\n
\/\/array_filter()<\/span>\r\n$movies<\/span>=<\/span>array<\/span>(<\/span>\/*...*\/<\/span>);<\/span>\r\n$flops<\/span>=<\/span>array_filter<\/span>(<\/span>$movies<\/span>,<\/span>function<\/span>(<\/span>$movie<\/span>){<\/span>\r\n    return<\/span> (<\/span>$movie<\/span>[<\/span>'box_office_fross'<\/span>]<\/span><<\/span>5000000<\/span>)<\/span>?<\/span>1<\/span>:<\/span>0<\/span>;<\/span>\r\n});<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\nfunction<\/span> blockbuster<\/span>(<\/span>$movies<\/span>){<\/span>\r\n    foreach<\/span> (<\/span>$movies<\/span> as<\/span> $movie<\/span>){<\/span>\r\n        if<\/span>(<\/span>$movie<\/span>[<\/span>'box_office_gross'<\/span>]<\/span>><\/span>200000000<\/span>){<\/span>return<\/span> $movie<\/span>;}<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n\/\/foreach()<\/span>\r\nfunction<\/span> blockbuster<\/span>(<\/span>$movies<\/span>){<\/span>\r\n    foreach<\/span> (<\/span>$movies<\/span> as<\/span> $movie<\/span>){<\/span>\r\n        if<\/span>(<\/span>$movie<\/span>[<\/span>'box_office_gross'<\/span>]<\/span>><\/span>200000000<\/span>){<\/span>return<\/span> $movie<\/span>;}<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5bfb\u627e\u6570\u7ec4\u7684\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c<\/p>\n
$largest<\/span>=<\/span>max<\/span>(<\/span>$array<\/span>);<\/span>\r\n$smallest<\/span>=<\/span>min<\/span>(<\/span>$array<\/span>);<\/span>\r\n<\/code><\/pre>\n
14. \u5012\u7f6e\u6570\u7ec4<\/p>\n
$array<\/span>=<\/span>array<\/span>(<\/span>\"cat\"<\/span>=><\/span>\"imy\"<\/span>,<\/span>\"dog\"<\/span>=><\/span>\"toto\"<\/span>,<\/span>\"fish\"<\/span>=><\/span>\"asuka\"<\/span>);<\/span>\r\n$reversed<\/span>=<\/span>array_reverse<\/span>(<\/span>$array<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$array<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$reversed<\/span>);<\/span>\r\n<\/code><\/pre>\n
<\/code><\/pre>\n
15 \u6392\u5e8f
\n\u4f7f\u7528sort\u51fd\u6570\uff0c\u6570\u7ec4\u5c06\u6309\u7167\u5b57\u6bcd\u987a\u5e8f\u6392\u5217\u3002<\/p>\n
$states<\/span>=<\/span>array<\/span>(<\/span>'Delaware'<\/span>,<\/span> 'Pennsylvania'<\/span>,<\/span> 'New Jersey'<\/span>);<\/span>\r\nsort<\/span>(<\/span>$states<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$states<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u60f3\u6309\u7167\u6570\u503c\u987a\u5e8f\u6392\u5217\uff1a<\/p>\n
$scores<\/span> =<\/span> array<\/span>(<\/span>1<\/span>,<\/span> 10<\/span>,<\/span> 2<\/span>,<\/span> 20<\/span>);<\/span>\r\nsort<\/span>(<\/span>$scores<\/span>,<\/span> SORT_NUMERIC<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$scores<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u60f3\u8981\u4fdd\u6301\u952e\u548c\u503c\u4e4b\u95f4\u7684\u5173\u7cfb\uff1a\u53ef\u4ee5\u4f7f\u7528asort()\u51fd\u6570\u3002<\/p>\n
$states<\/span> =<\/span> array<\/span>(<\/span>1<\/span> =><\/span> 'Delaware'<\/span>,<\/span> 'Pennsylvania'<\/span>,<\/span> 'New Jersey'<\/span>);<\/span>\r\nasort<\/span>(<\/span>$states<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$states<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u6574\u7406\u6570\u5b57\u7684\u987a\u5e8f\uff1a\u5f53\u5b57\u7b26\u4e32\u548c\u6570\u5b57\u6df7\u5408\u5728\u4e00\u8d77\u65f6\u3002<\/p>\n
$tests<\/span>=<\/span>array<\/span>(<\/span>'test1.php'<\/span>,<\/span> 'test10.php'<\/span>,<\/span> 'test11.php'<\/span>,<\/span> 'test2.php'<\/span>);<\/span>\r\nnatsort<\/span>(<\/span>$tests<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$tests<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u81ea\u5df1\u8bbe\u8ba1\u6392\u5e8f\u65b9\u5f0f\u3002
\n\u4f7f\u7528 usort<\/p>\n
$tests<\/span> =<\/span> array<\/span>(<\/span>'test1.php'<\/span>,<\/span> 'test10.php'<\/span>,<\/span> 'test11.php'<\/span>,<\/span> 'test2.php'<\/span>);<\/span>\r\n\/\/ sort in reverse natural order<\/span>\r\nusort<\/span>(<\/span>$tests<\/span>,<\/span> function<\/span> (<\/span>$a<\/span>,<\/span> $b<\/span>)<\/span> {<\/span> return<\/span> strnatcmp<\/span>(<\/span>$b<\/span>,<\/span> $a<\/span>);<\/span>\r\n});<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u52a0\u5feb\u6392\u5e8f\u7684\u901f\u5ea6\u3002<\/p>\n
function<\/span> array_sort<\/span>(<\/span>$array<\/span>,<\/span>$map_func<\/span>,<\/span>$sort_func<\/span>=<\/span>''<\/span>){<\/span>\r\n    $mapped<\/span>=<\/span>array_map<\/span>(<\/span>$map_func<\/span>,<\/span>$array<\/span>);<\/span>\r\n    var_dump<\/span>(<\/span>$mapped<\/span>);<\/span>\r\n    print<\/span> \"<br>\"<\/span>;<\/span>\r\n    if<\/span>(<\/span>''<\/span>===<\/span>$sort_func<\/span>){<\/span>\r\n        \/\/key\u306f\u5909\u308f\u3089\u306a\u3044\u3002<\/span>\r\n        asort<\/span>(<\/span>$mapped<\/span>);<\/span>\r\n        var_dump<\/span>(<\/span>$mapped<\/span>);<\/span>\r\n    }<\/span>else<\/span>{<\/span>\r\n        uasort<\/span>(<\/span>$mapped<\/span>,<\/span>$sort_func<\/span>);<\/span>\r\n    }<\/span>\r\n    while<\/span>(<\/span>list<\/span>(<\/span>$key<\/span>)<\/span>=<\/span>each<\/span>(<\/span>$mapped<\/span>)){<\/span>\r\n        \/\/<\/span>\r\n        $sorted<\/span>[]<\/span>=<\/span>$array<\/span>[<\/span>$key<\/span>];<\/span>\r\n        var_dump<\/span>(<\/span>$sorted<\/span>);<\/span>\r\n        print<\/span> \"<br>\"<\/span>;<\/span>\r\n    }<\/span>\r\n    return<\/span> $sorted<\/span>;<\/span>\r\n}<\/span>\r\n\r\nfunction<\/span> map_length<\/span>(<\/span>$a<\/span>){<\/span>\r\n    return<\/span> strlen<\/span>(<\/span>$a<\/span>);<\/span>\r\n}<\/span>\r\n\r\n$test<\/span>=<\/span>array<\/span>(<\/span>'one'<\/span>,<\/span> 'two'<\/span>,<\/span> 'three'<\/span>,<\/span> 'four'<\/span>,<\/span> 'five'<\/span>,<\/span>\r\n    'six'<\/span>,<\/span> 'seven'<\/span>,<\/span> 'eight'<\/span>,<\/span> 'nine'<\/span>,<\/span> 'ten'<\/span>);<\/span>\r\n\r\n$tests<\/span>=<\/span>array_sort<\/span>(<\/span>$test<\/span>,<\/span>'map_length'<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$tests<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u968f\u673a\u6392\u5e8f17\u4e2a\u9879\u76ee<\/p>\n
shuffle<\/span>(<\/span>$array<\/span>)<\/span>\r\n<\/code><\/pre>\n
18 \u5220\u9664\u91cd\u590d\u5143\u7d20\uff1aarray_unique<\/p>\n
$array<\/span>=<\/span>array<\/span>(<\/span>'df'<\/span>,<\/span>'dd'<\/span>,<\/span>'sd'<\/span>,<\/span>'df'<\/span>,<\/span>'df'<\/span>,<\/span>'sd'<\/span>,<\/span>'dd'<\/span>,<\/span>'ss'<\/span>,<\/span>'gg'<\/span>);<\/span>\r\n$unique<\/span>=<\/span>array_unique<\/span>(<\/span>$array<\/span>);<\/span>\r\nprint_r<\/span>(<\/span>$unique<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u7b2c\u4e8c\u79cd\u65b9\u6cd5<\/p>\n
$array2<\/span>=<\/span>array<\/span>(<\/span>'df'<\/span>,<\/span>'dd'<\/span>,<\/span>'sd'<\/span>,<\/span>'df'<\/span>,<\/span>'df'<\/span>,<\/span>'sd'<\/span>,<\/span>'dd'<\/span>,<\/span>'ss'<\/span>,<\/span>'gg'<\/span>);<\/span>\r\nforeach<\/span> (<\/span>$array2<\/span> as<\/span> $element<\/span>){<\/span>\r\n    $newArray<\/span>[<\/span>$element<\/span>]<\/span>=<\/span>$element<\/span>;<\/span>\r\n}<\/span>\r\nprint_r<\/span>(<\/span>$newArray<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u5bf9\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u5e94\u7528\u51fd\u6570\u3002<\/p>\n
$names<\/span>=<\/span>array<\/span>(<\/span>'firstname'<\/span>=><\/span>'Baba'<\/span>,<\/span>'lastname'<\/span>=><\/span>\"O'Riley\"<\/span>);<\/span>\r\narray_walk<\/span>(<\/span>$names<\/span>,<\/span>function<\/span>(<\/span>&<\/span>$value<\/span>,<\/span>$key<\/span>){<\/span>\r\n    $value<\/span>=<\/span>htmlentities<\/span>(<\/span>$value<\/span>,<\/span>ENT_QUOTES<\/span>);<\/span>\r\n});<\/span>\r\n\r\nforeach<\/span> (<\/span>$names<\/span> as<\/span> $name<\/span>){<\/span>\r\n    print<\/span> \"<\/span>$name<\/span><br>\"<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8ba1\u7b9720\u4e0e\u96c6\u5408\u7684\u4ea4\u96c6\u5408\u3002<\/p>\n
$a<\/span>=<\/span>array<\/span>(<\/span>2<\/span>,<\/span>4<\/span>,<\/span>5<\/span>,<\/span>3<\/span>,<\/span>3<\/span>,<\/span>10<\/span>);<\/span>\r\n$b<\/span>=<\/span>array<\/span>(<\/span>3<\/span>,<\/span>6<\/span>,<\/span>3<\/span>,<\/span>22<\/span>,<\/span>10<\/span>,<\/span>7<\/span>);<\/span>\r\n\/\/\u548c\u96c6\u5408<\/span>\r\n$union<\/span>=<\/span>array_unique<\/span>(<\/span>array_merge<\/span>(<\/span>$a<\/span>,<\/span>$b<\/span>));<\/span>\r\nvar_dump<\/span>(<\/span>$union<\/span>);<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\n\/\/\u7a4d\u96c6\u5408<\/span>\r\n$intersection<\/span>=<\/span>array_intersect<\/span>(<\/span>$a<\/span>,<\/span>$b<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$intersection<\/span>);<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\n\/\/\u5dee\u96c6\u5408<\/span>\r\n\/\/\u3053\u3061\u3089\u306f$a\u306e\u8981\u7d20\u3001\u3057\u304b\u3082$b\u306b\u5b58\u5728\u3057\u306a\u3044\u8981\u7d20<\/span>\r\n$difference1<\/span>=<\/span>array_diff<\/span>(<\/span>$a<\/span>,<\/span>$b<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$difference1<\/span>);<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\n\/\/\u3053\u3061\u3089\u306f$b\u306e\u8981\u7d20\u3001\u3057\u304b\u3082$a\u306b\u5b58\u5728\u3057\u306a\u3044\u8981\u7d20<\/span>\r\n$difference2<\/span>=<\/span>array_diff<\/span>(<\/span>$b<\/span>,<\/span>$a<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$difference2<\/span>);<\/span>\r\nprint<\/span> \"<br>\"<\/span>;<\/span>\r\n$difference<\/span>=<\/span>array_merge<\/span>(<\/span>$difference1<\/span>,<\/span>$difference2<\/span>);<\/span>\r\nvar_dump<\/span>(<\/span>$difference<\/span>);<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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