{"id":30272,"date":"2023-03-31T22:34:08","date_gmt":"2022-11-19T20:58:24","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e5%a4%87%e5%bf%98%e5%bd%95\/"},"modified":"2025-08-12T18:23:51","modified_gmt":"2025-08-12T10:23:51","slug":"php%e7%9a%84%e5%a4%87%e5%bf%98%e5%bd%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e5%a4%87%e5%bf%98%e5%bd%95\/","title":{"rendered":"PHP\u7684\u5907\u5fd8\u5f55"},"content":{"rendered":"

PHP\u5b66\u4e60\u7684\u7b14\u8bb0 (PHP de<\/p>\n

\u5173\u4e8e\u94fe\u8868\u7684\u5b89\u6392<\/p>\n

\u8fde\u60f3\u6570\u7ec4\u53ef\u4ee5\u6709\u591a\u5c42\u3002<\/p>\n
$array_promise_member<\/span> =<\/span> [<\/span>\r\n  'human'<\/span>=><\/span>[<\/span>\r\n    'Emma'<\/span> =><\/span>[<\/span>\r\n      'sex'<\/span> =><\/span>'woman'<\/span>,<\/span>\r\n      'plant'<\/span> =><\/span> 'three'<\/span>,<\/span>\r\n      'age'<\/span> =><\/span> 11<\/span>\r\n    ],<\/span>\r\n    'Ray'<\/span> =><\/span>[<\/span>\r\n      'sex'<\/span> =><\/span>'men'<\/span>,<\/span>\r\n      'plant'<\/span> =><\/span> 'three'<\/span>,<\/span>\r\n      'age'<\/span> =><\/span> 12<\/span>\r\n    ],<\/span>\r\n    'Noman'<\/span> =><\/span>[<\/span>\r\n      'sex'<\/span> =><\/span>'woman'<\/span>,<\/span>\r\n      'plant'<\/span> =><\/span> 'three'<\/span>,<\/span>\r\n      'age'<\/span> =><\/span> 11<\/span>\r\n    ],<\/span>\r\n  ],<\/span>\r\n  'monster'<\/span> =><\/span>[<\/span>\r\n    'Sonju'<\/span> =><\/span>[<\/span>\r\n      'sex'<\/span> =><\/span>'men'<\/span>,<\/span>\r\n      'age'<\/span> =><\/span> null<\/span>,<\/span>\r\n    ],<\/span>\r\n    'anokata'<\/span> =><\/span>[<\/span>\r\n      'sex'<\/span> =><\/span>'men'<\/span>,<\/span>\r\n      'age'<\/span> =><\/span> null<\/span>,<\/span>\r\n    ]<\/span>\r\n  ]<\/span>\r\n];<\/span>\r\n\r\n\/\/\u9023\u60f3\u914d\u5217\u306e\u547c\u3073\u51fa\u3057\u65b9<\/span>\r\necho<\/span> $array_promise_member<\/span>[<\/span>'human'<\/span>][<\/span>'Emma'<\/span>][<\/span>'age'<\/span>];<\/span>\r\n\/\/11<\/span>\r\n\r\n\r\n<\/code><\/pre>\n
\u6253\u5370\u8f93\u51fa\u53d8\u91cf\uff08Var_dump()\uff09\u3002<\/p>\n
\u53ef\u4ee5\u67e5\u770b\u53d8\u91cf\u7684\u5185\u5bb9<\/p>\n
echo<\/span> '<pre>'<\/span>;<\/span>\r\nvar_dump<\/span>(<\/span>$array_promise_member<\/span>);<\/span>\r\necho<\/span> '<pre>'<\/span>;<\/span>\r\n\/\/echo '<pre>';\u3092\u4e0a\u4e0b\u306b\u3064\u3051\u308b\u3068\u898b\u3084\u3059\u304f\u306a\u308b<\/span>\r\n<\/code><\/pre>\n
\u8f6c\u53d8\u804c\u4e1a\u65b9\u6cd5<\/p>\n
PHP_EOL\uff0cEOT\uff0c\u548c ehco ‘
\n‘\u3002
\n\u6362\u884c\u7b26\uff0c\u7ed3\u675f\u7b26\u548c\u8f93\u51fa ‘
\n‘\u3002<\/p>\n
\u4f7f\u7528if\u65f6\u7684\u6280\u5de7\u3002<\/p>\n
\u7531\u4e8e\u4f7f\u7528else\u4f1a\u964d\u4f4e\u53ef\u8bfb\u6027\u3002<\/p>\n
\r\n$here<\/span> =<\/span> 'farm'<\/span>;<\/span>\r\nif<\/span>(<\/span>$here<\/span> ===<\/span>'farm'<\/span>){<\/span>\r\n  echo<\/span> '\u8131\u7344'<\/span>;<\/span>\r\n}<\/span>else<\/span>{<\/span>\r\n  echo<\/span>'stay ease'<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u6837\u6539\u5199<\/p>\n
if<\/span>(<\/span>$here<\/span> ===<\/span> 'farm'<\/span>){<\/span>\r\n  echo<\/span> '\u8131\u7344'<\/span>;<\/span>\r\n}<\/span>\r\n\r\nif<\/span>(<\/span>$here<\/span> !==<\/span>'farm'<\/span>){<\/span>\r\n  echo<\/span> 'stay ease'<\/span>;<\/span>\r\n}<\/span> \r\n\r\n<\/code><\/pre>\n
\u5224\u65ad\u6570\u636e\u662f\u5426\u5b58\u5728<\/p>\n
\u5b58\u5728 \/ \u4e3a\u7a7a \/ \u662f\u7a7a
\n\u4ece\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u6570\u636e\u65f6\uff0c\u9700\u8981\u786e\u8ba4\u6570\u636e\u662f\u5426\u5b58\u5728\u3002<\/p>\n
\r\n$test<\/span>=<\/span>'1'<\/span>;<\/span>\r\n\r\n\/\/empty\u69cb\u6587\u3092\u4f7f\u3063\u305f\u5834\u5408<\/span>\r\nif<\/span>(<\/span>!<\/span>empty<\/span>(<\/span>$test<\/span>)){<\/span>\r\n  echo<\/span> '\u5909\u6570\u306f\u7a7a\u3067\u306f\u3042\u308a\u307e\u305b\u3093'<\/span>;<\/span>\r\n}<\/span>\r\n\/\/\u5909\u6570\u306f\u7a7a\u3067\u306f\u3042\u308a\u307e\u305b\u3093<\/span>\r\n<\/code><\/pre>\n
\u4e09\u4e2a\u8fd0\u7b97\u7b26<\/p>\n
\u5982\u679c\u6761\u4ef6\u6ee1\u8db3\uff0c\u5219\u4e3a\u771f\uff0c\u5426\u5219\u4e3a\u5047\u3002<\/p>\n
\r\n$rank<\/span> =<\/span> '\u7279\u4e0a'<\/span>;<\/span>\r\n\r\n$command<\/span> =<\/span> $rank<\/span> ===<\/span> '\u7279\u4e0a'<\/span> ?<\/span> 'catch! Don'<\/span>t<\/span> kiII<\/span>' : '<\/span>KiII<\/span> them<\/span>'<\/span>;<\/span>\r\n\r\necho<\/span> $command<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5173\u4e8eforeach\u7684\u4e8b\u9879<\/p>\n
\u591a\u7ef4\u6570\u7ec4\u7684foreach\u5faa\u73af<\/p>\n
  $members<\/span> =<\/span> [<\/span>\r\n    'Emma'<\/span> =><\/span>[<\/span>\r\n      'kind'<\/span> =><\/span>'human'<\/span>,<\/span>\r\n      'plant'<\/span> =><\/span> 'three'<\/span>,<\/span>\r\n      'age'<\/span> =><\/span> 11<\/span>\r\n    ],<\/span>\r\n    'Ray'<\/span> =><\/span>[<\/span>\r\n      'kind'<\/span> =><\/span>'human'<\/span>,<\/span>\r\n      'plant'<\/span> =><\/span> 'three'<\/span>,<\/span>\r\n      'age'<\/span> =><\/span> 12<\/span>\r\n    ],<\/span>\r\n    'Noman'<\/span> =><\/span>[<\/span>\r\n      'kind'<\/span> =><\/span>'human'<\/span>,<\/span>\r\n      'plant'<\/span> =><\/span> 'three'<\/span>,<\/span>\r\n      'age'<\/span> =><\/span> 11<\/span>\r\n    ]<\/span>\r\n  ];<\/span>\r\n\r\n\r\n\/\/<\/span>\r\nforeach<\/span> (<\/span>$members<\/span> as<\/span> $member1<\/span>)<\/span> {<\/span>\r\n  foreach<\/span> (<\/span>$member1<\/span> as<\/span> $member<\/span>)<\/span> {<\/span>\r\n    echo<\/span> $member<\/span>;<\/span>\r\n    echo<\/span> '<br>'<\/span>;<\/span>\r\n\r\n  \/\/\u30ad\u30fc\u3082\u53d6\u308a\u305f\u3044\u6642\u306f<\/span>\r\nforeach<\/span> (<\/span>$members<\/span> as<\/span> $member1<\/span>)<\/span> {<\/span>\r\n  foreach<\/span> (<\/span>$member1<\/span> as<\/span> $member<\/span> =><\/span> $value<\/span>)<\/span> {<\/span>\r\n    echo<\/span> $member<\/span> .<\/span> '\u306f'<\/span> .<\/span> $value<\/span> .<\/span> '\u3067\u3059\u3002'<\/span> ;<\/span>\r\n    echo<\/span> '<br>'<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5173\u4e8e\u7b49\u53f7\u7b26\u53f7<\/p>\n
\u53ea\u9700\u8981\u4e00\u79cd\u9009\u9879\uff0c\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u672c\u5730\u5316\u6539\u5199\uff1a
\n\uff1d\uff1d\uff1d\u304b\uff1d\uff1d\u304b<\/p>\n
\u5728PHP\u4e2d\uff0c\u65e0\u8bba\u53d8\u91cf\u7684\u7c7b\u578b\u4e0d\u540c\uff0c\u5b83\u4eec\u90fd\u80fd\u88ab\u4f7f\u7528\u3002
\n\u5728PHP\u4e2d\uff0c\u4e0d\u4ec5\u53d8\u91cf\u7684\u503c\u76f8\u7b49\uff0c\u800c\u4e14\u5b83\u4eec\u7684\u7c7b\u578b\u4e5f\u76f8\u7b49\u3002<\/p>\n
\u4f8b\u5982<\/p>\n
$string_num<\/span> =<\/span> '10'<\/span>;<\/span>\/\/\u6587\u5b57\u5217<\/span>\r\n\r\nif<\/span>(<\/span>$string_num<\/span> ==<\/span> 10<\/span>){<\/span>\/\/\u6570\u5024<\/span>\r\n  echo<\/span> '\u7b49\u3057\u3044'<\/span>;<\/span>\r\n}<\/span>\r\n\/\/\u7b49\u3057\u3044<\/span>\r\n<\/code><\/pre>\n
\u6210\u4e3a\u4e86\u3002<\/p>\n
$string_num<\/span> =<\/span> '10'<\/span>;<\/span>\/\/\u6587\u5b57\u5217<\/span>\r\n\r\nif<\/span>(<\/span>$string_num<\/span> ===<\/span> 10<\/span>){<\/span>\/\/\u6570\u5024<\/span>\r\n  echo<\/span> '\u7b49\u3057\u3044'<\/span>;<\/span>\r\n}<\/span>\r\n\/\/error<\/span>\r\n<\/code><\/pre>\n
\u5728\u4f7f\u7528 switch \u7684\u60c5\u51b5\u4e0b\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4f1a\u53d8\u4e3a”==”\u3002<\/p>\n
$string_num<\/span> =<\/span> '10'<\/span>\r\n\r\nswitch<\/span>(<\/span>$string_num<\/span>){<\/span>\r\n case<\/span> $string_num<\/span> ===<\/span> 10<\/span>:<\/span>\r\n  echo<\/span> '\u7b49\u3057\u3044'<\/span>;<\/span>\r\n case<\/span>....<\/span>\r\n<\/code><\/pre>\n
\u901a\u8fc7\u4f7f\u7528”if”\uff0c\u53ef\u4ee5\u8fdb\u884c\u4e25\u8c28\u7684\u68c0\u67e5\uff0c\u4f46\u8fd9\u6837\u4f1a\u4f7f\u4e66\u5199\u65b9\u5f0f\u53d8\u5f97\u590d\u6742\uff0c\u5c3d\u91cf\u907f\u514d\u4f7f\u7528”switch”\u3002<\/p>\n
\u5e38\u7528\u7684\u51fd\u6570<\/p>\n
\u6587\u5b57\u4e32\u51fd\u6570<\/p>\n
    \n
  • \n
      strlen<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
          \u6587\u5b57\u5217\u306e\u9577\u3055(\u30d0\u30a4\u30c8\u6570)\u3092\u8abf\u3079\u308b\u95a2\u6570<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            \n
          • \n
              \u203b\u65e5\u672c\u8a9e\u306e\u5e73\u4eee\u540d\u306f1\u6587\u5b573\u30d0\u30a4\u30c8<\/ul>\n<\/li>\n<\/ul>\n
               <\/p>\n
                \n
              • \n
                  https:\/\/www.php.net\/manual\/ja\/function.strlen.php<\/ul>\n<\/li>\n<\/ul>\n
                   <\/p>\n
                    \n
                  • \n
                      md_strlen<\/ul>\n<\/li>\n<\/ul>\n
                       <\/p>\n
                        \n
                      • \n
                          \u6587\u5b57\u5217\u306e\u9577\u3055\u3092\u8abf\u3079\u308b\u95a2\u6570<\/ul>\n<\/li>\n<\/ul>\n
                           <\/p>\n
                            \n
                          • \n
                              \u203b\u65e5\u672c\u8a9e\u30821\u6587\u5b57\u3068\u3057\u3066\u8a08\u7b97\u3055\u308c\u308b<\/ul>\n<\/li>\n<\/ul>\n
                               <\/p>\n
                                \n
                              • \n
                                  https:\/\/www.php.net\/manual\/ja\/function.mb-strlen.php<\/ul>\n<\/li>\n<\/ul>\n
                                   <\/p>\n
                                    \n
                                  • \n
                                      str_replace<\/ul>\n<\/li>\n<\/ul>\n
                                       <\/p>\n
                                        \n
                                      • \n
                                          \u6587\u5b57\u5217\u3092\u7f6e\u63db\u3059\u308b\u95a2\u6570<\/ul>\n<\/li>\n<\/ul>\n
                                           <\/p>\n
                                            \n
                                          • \n
                                              https:\/\/www.php.net\/manual\/ja\/function.str-replace.php<\/ul>\n<\/li>\n<\/ul>\n
                                               <\/p>\n
                                                \n
                                              • \n
                                                  explode<\/ul>\n<\/li>\n<\/ul>\n
                                                   <\/p>\n
                                                    \n
                                                  • \n
                                                      \u6587\u5b57\u5217\u3092\u5206\u5272\u3059\u308b\u95a2\u6570<\/ul>\n<\/li>\n<\/ul>\n
                                                       <\/p>\n
                                                        \n
                                                      • \n
                                                          https:\/\/www.php.net\/manual\/ja\/function.explode<\/ul>\n<\/li>\n<\/ul>\n
                                                           <\/p>\n
                                                            \n
                                                          • \n
                                                              implode<\/ul>\n<\/li>\n<\/ul>\n
                                                               <\/p>\n
                                                                \n
                                                              • \n
                                                                  \u6587\u5b57\u5217\u3092\u7d50\u5408\u3059\u308b\u95a2\u6570<\/ul>\n<\/li>\n<\/ul>\n
                                                                   <\/p>\n
                                                                    \n
                                                                  • \n
                                                                      https:\/\/www.php.net\/manual\/ja\/function.implode<\/ul>\n<\/li>\n<\/ul>\n
                                                                       <\/p>\n
                                                                        \n
                                                                      • \n
                                                                          preg_match<\/ul>\n<\/li>\n<\/ul>\n
                                                                           <\/p>\n
                                                                            \n
                                                                          • \n
                                                                              \u6b63\u898f\u8868\u73fe\u306b\u4f7f\u7528<\/ul>\n<\/li>\n<\/ul>\n
                                                                               <\/p>\n
                                                                                \n
                                                                              • \n
                                                                                  \u2192\u6587\u5b57\u304b\u6570\u5b57\u304b\u3001\u90f5\u4fbf\u756a\u53f7\u3084\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u6b63\u3057\u304f\u5165\u529b\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n
                                                                                   <\/p>\n
                                                                                    \n
                                                                                  • \n
                                                                                      https:\/\/www.php.net\/manual\/ja\/function.preg-match<\/ul>\n<\/li>\n<\/ul>\n
                                                                                       <\/p>\n
                                                                                        \n
                                                                                      • \n
                                                                                          mb_substr<\/ul>\n<\/li>\n<\/ul>\n
                                                                                           <\/p>\n
                                                                                            \n
                                                                                          • \n
                                                                                              \u6307\u5b9a\u6587\u5b57\u5217\u304b\u3089\u6587\u5b57\u5217\u3092\u53d6\u5f97\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n
                                                                                               <\/p>\n
                                                                                                https:\/\/www.php.net\/manual\/ja\/function.mb-substr<\/ul>\n
                                                                                                \u53c2\u8003\u8d44\u6599\uff1aPHP\u51fd\u6570\u56fe\u89e3\u4e00\u89c8
                                                                                                \nhttp:\/\/html2php.starrypages.net\/php\/array-funcs<\/p>\n
                                                                                                \u8bfb\u53d6\u5916\u90e8\u6587\u4ef6<\/p>\n
                                                                                                \u9700\u8981\u548c\u5305\u542b
                                                                                                \n\u8981\u6c42 -> \u5f53\u6587\u4ef6\u52a0\u8f7d\u5931\u8d25\u65f6\uff0c\u4f1a\u51fa\u73b0\u9519\u8bef
                                                                                                \n\u5305\u62ec -> \u5f53\u6587\u4ef6\u52a0\u8f7d\u5931\u8d25\u65f6\uff0c\u4f1a\u51fa\u73b0\u8b66\u544a<\/p>\n
                                                                                                <?php<\/span>\r\n\r\nrequire<\/span> '\u30d5\u30a1\u30a4\u30eb\u540d'<\/span>;<\/span>\r\n\r\n\/\/\u5916\u90e8\u30d5\u30a1\u30a4\u30eb\u306e\u95a2\u6570\u3084\u5909\u6570\u304c\u4f7f\u3048\u308b<\/span>\r\n\r\n<\/code><\/pre>\n
                                                                                                \u663e\u793a\u5f53\u524d\u6587\u4ef6\u7684\u7edd\u5bf9\u8def\u5f84\u7684\u9b54\u6cd5\u5e38\u91cf<\/p>\n
                                                                                                echo<\/span> __DIR__<\/span>;<\/span>\r\n\r\n\/\/  ~\/~\/~\/main.php<\/span>\r\n<\/code><\/pre>\n
                                                                                                \u5916\u90e8\u30d5\u30a1\u30a4\u30eb\u3092\u7d76\u5bfe\u30d1\u30b9\u3067\u8aad\u307f\u8fbc\u307f\u305f\u3044\u6642\u306f<\/p>\n
                                                                                                require<\/span> __DIR__<\/span> .<\/span> '~\/~\/~\/\u25cb\u25cb.php'<\/span>;<\/span>\r\n<\/code><\/pre>\n
                                                                                                \u80fd\u591f\u4ee5…\u7684\u65b9\u5f0f\u9605\u8bfb<\/p>\n","protected":false},"excerpt":{"rendered":"
                                                                                                PHP\u5b66\u4e60\u7684\u7b14\u8bb0 (PHP de \u5173\u4e8e\u94fe\u8868\u7684\u5b89\u6392 \u8fde\u60f3\u6570\u7ec4\u53ef\u4ee5\u6709\u591a\u5c42\u3002 $array_promise_memb […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30272","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\nPHP\u7684\u5907\u5fd8\u5f55 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8ePHP\u7684\u5907\u5fd8\u5f55\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\u5907\u5fd8\u5f55\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP\u7684\u5907\u5fd8\u5f55\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8ePHP\u7684\u5907\u5fd8\u5f55\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u7684\u5907\u5fd8\u5f55\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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