PHP 5.3 \u52a0\u5165\u4e86\u95ed\u5305\u8bed\u6cd5\uff0c\u4e5f\u5c31\u662f\u533f\u540d\u51fd\u6570\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u7533\u660e\u884c\u5185\u51fd\u6570\u548c\u5728\u53d8\u91cf\u4e2d\u4fdd\u5b58\u3002\u867d\u7136\u8fd9\u4e2a\u8bed\u6cd5\u548cJavaScript\u7684\u95ed\u5305\u76f8\u6bd4\u6709\u70b9\u602a\u5f02\uff0c\u4f46\u662f\u5bf9\u4e8ePHP\u8bed\u8a00\u6765\u8bf4\uff0c\u8fd9\u662f\u4e00\u4e2a\u826f\u597d\u7684\u8865\u5145\u3002<\/p>\n
<?php
\n\/**
\n* \u4e0b\u9762\u63d0\u5230\u7684\u4ee3\u7801\u5728PHP5.3\u4ee5\u4e0a\u7248\u672c\u8fd0\u884c\u901a\u8fc7.
\n*\/
\nfunction callback($callback) {
\n$callback();
\n}
\n\/\/\u8f93\u51fa: This is a anonymous function.<br \/>\/n
\n\/\/\u8fd9\u91cc\u662f\u76f4\u63a5\u5b9a\u4e49\u4e00\u4e2a\u533f\u540d\u51fd\u6570\u8fdb\u884c\u4f20\u9012, \u5728\u4ee5\u5f80\u7684\u7248\u672c\u4e2d, \u8fd9\u662f\u4e0d\u53ef\u7528\u7684.
\n\/\/\u73b0\u5728, \u8fd9\u79cd\u8bed\u6cd5\u975e\u5e38\u8212\u670d, \u548cjavascript\u8bed\u6cd5\u57fa\u672c\u4e00\u81f4, \u4e4b\u6240\u4ee5\u8bf4\u57fa\u672c\u5462, \u9700\u8981\u7ee7\u7eed\u5411\u4e0b\u770b
\n\/\/\u7ed3\u8bba: \u4e00\u4e2a\u8212\u670d\u7684\u8bed\u6cd5\u5fc5\u7136\u4f1a\u53d7\u6b22\u8fce\u7684.
\ncallback(function() {
\nprint “This is a anonymous function.<br \/>\/n”;
\n});
\n\/\/\u8f93\u51fa: This is a closure use string value, msg is: Hello, everyone.<br \/>\/n
\n\/\/\u8fd9\u91cc\u9996\u5148\u5b9a\u4e49\u4e86\u4e00\u4e2a\u95ed\u5305, \u8fd9\u6b21\u6237\u53e3\u672c\u4e0a\u6709\u540d\u5b57\u4e86…
\n\/\/use, \u4e00\u4e2a\u65b0\u9c9c\u7684\u5bb6\u4f19…
\n\/\/\u4f17\u6240\u5468\u77e5, \u95ed\u5305: \u5185\u90e8\u51fd\u6570\u4f7f\u7528\u4e86\u5916\u90e8\u51fd\u6570\u4e2d\u5b9a\u4e49\u7684\u53d8\u91cf.
\n\/\/\u5728PHP\u65b0\u5f00\u653e\u7684\u95ed\u5305\u8bed\u6cd5\u4e2d, \u6211\u4eec\u5c31\u662f\u7528use\u6765\u4f7f\u7528\u95ed\u5305\u5916\u90e8\u5b9a\u4e49\u7684\u53d8\u91cf\u7684.
\n\/\/\u8fd9\u91cc\u6211\u4eec\u4f7f\u7528\u4e86\u5916\u90e8\u53d8\u91cf$msg, \u5b9a\u4e49\u5b8c\u4e4b\u540e, \u53c8\u5bf9\u5176\u503c\u8fdb\u884c\u4e86\u6539\u53d8, \u95ed\u5305\u88ab\u6267\u884c\u540e\u8f93\u51fa\u7684\u662f\u539f\u59cb\u503c
\n\/\/\u7ed3\u8bba: \u4ee5\u4f20\u503c\u65b9\u5f0f\u4f20\u9012\u7684\u57fa\u7840\u7c7b\u578b\u53c2\u6570, \u95ed\u5305use\u7684\u503c\u5728\u95ed\u5305\u521b\u5efa\u662f\u5c31\u786e\u5b9a\u4e86.
\n$msg = “Hello, everyone”;
\n$callback = function () use ($msg) {
\nprint “This is a closure use string value, msg is: $msg. <br \/>\/n”;
\n};
\n$msg = “Hello, everybody”;
\ncallback($callback);
\n\/\/\u8f93\u51fa: This is a closure use string value lazy bind, msg is: Hello, everybody.<br \/>\/n
\n\/\/\u6362\u4e00\u79cd\u5f15\u7528\u65b9\u5f0f, \u6211\u4eec\u4f7f\u7528\u5f15\u7528\u7684\u65b9\u5f0f\u6765use
\n\/\/\u53ef\u4ee5\u53d1\u73b0\u8fd9\u6b21\u8f93\u51fa\u662f\u95ed\u5305\u5b9a\u4e49\u540e\u7684\u503c…
\n\/\/\u8fd9\u4e2a\u5176\u5b9e\u4e0d\u96be\u7406\u89e3, \u6211\u4eec\u4ee5\u5f15\u7528\u65b9\u5f0fuse, \u90a3\u95ed\u5305use\u7684\u662f$msg\u8fd9\u4e2a\u53d8\u91cf\u7684\u5730\u5740
\n\/\/\u5f53\u540e\u9762\u5bf9$msg\u8fd9\u4e2a\u5730\u5740\u4e0a\u7684\u503c\u8fdb\u884c\u4e86\u6539\u53d8\u4e4b\u540e, \u95ed\u5305\u5185\u518d\u8f93\u51fa\u8fd9\u4e2a\u5730\u5740\u7684\u503c\u65f6, \u81ea\u7136\u6539\u53d8\u4e86.
\n$msg = “Hello, everyone”;
\n$callback = function () use (&$msg) {
\nprint “This is a closure use string value lazy bind, msg is: $msg. <br \/>\/n”;
\n};
\n$msg = “Hello, everybody”;
\ncallback($callback);
\n\/\/\u8f93\u51fa: This is a closure use object, msg is: Hello, everyone.<br \/>\/n
\n\/\/\u95ed\u5305\u4e2d\u8f93\u51fa\u7684\u662f\u4e4b\u524d\u88ab\u62f7\u8d1d\u7684\u503c\u4e3aHello, everyone\u7684\u5bf9\u8c61, \u540e\u9762\u662f\u5bf9$obj\u8fd9\u4e2a\u540d\u5b57\u7684\u4e00\u4e2a\u91cd\u65b0\u8d4b\u503c.
\n\/\/\u53ef\u4ee5\u8fd9\u6837\u8003\u8651
\n\/\/1. obj\u662f\u5bf9\u8c61Hello, everyone\u7684\u540d\u5b57
\n\/\/2. \u5bf9\u8c61Hello, everyone\u88ab\u95ed\u5305use, \u95ed\u5305\u4ea7\u751f\u4e86\u4e00\u4e2a\u5bf9Hello, everyone\u5bf9\u8c61\u7684\u5f15\u7528
\n\/\/3. obj\u88ab\u4fee\u6539\u4e3aHello, everybody\u8fd9\u4e2a\u5bf9\u8c61\u7684\u540d\u5b57
\n\/\/4. \u6ce8\u610f, \u662f\u540d\u5b57obj\u4ee3\u8868\u7684\u5b9e\u4f53\u53d8\u4e86, \u800c\u4e0d\u662fHello, everyone\u5bf9\u8c61, \u90a3\u81ea\u7136\u95ed\u5305\u7684\u8f93\u51fa\u8fd8\u662f\u524d\u9762\u7684Hello, everyone
\n$obj = (object) “Hello, everyone”;
\n$callback = function () use ($obj) {
\nprint “This is a closure use object, msg is: {$obj->scalar}. <br \/>\/n”;
\n};
\n$obj = (object) “Hello, everybody”;
\ncallback($callback);
\n\/\/\u8f93\u51fa: This is a closure use object, msg is: Hello, everybody.<br \/>\/n
\n\/\/\u8fd8\u662f\u6309\u7167\u4e0a\u9762\u7684\u6b65\u9aa4, \u6309\u90e8\u5c31\u73ed\u7684\u6765\u5427:
\n\/\/1. obj\u540d\u5b57\u6307\u5411Hello, everyone\u5bf9\u8c61
\n\/\/2. \u95ed\u5305\u4ea7\u751f\u4e00\u4e2a\u5f15\u7528\u6307\u5411Hello, everyone\u5bf9\u8c61
\n\/\/3. \u4fee\u6539obj\u540d\u5b57\u6307\u5411\u7684\u5bf9\u8c61(\u5373Hello, everyone\u5bf9\u8c61)\u7684scalar\u503c
\n\/\/4. \u6267\u884c\u95ed\u5305, \u8f93\u51fa\u7684\u81ea\u7136\u662fHello, everybody, \u56e0\u4e3a\u5176\u5b9e\u53ea\u6709\u4e00\u4e2a\u771f\u6b63\u7684\u5bf9\u8c61
\n$obj = (object) “Hello, everyone”;
\n$callback = function () use ($obj) {
\nprint “This is a closure use object, msg is: {$obj->scalar}. <br \/>\/n”;
\n};
\n$obj->scalar = “Hello, everybody”;
\ncallback($callback);
\n\/\/\u8f93\u51fa: This is a closure use object lazy bind, msg is: Hello, everybody.<br \/>\/n
\n\/\/\u95ed\u5305\u5f15\u7528\u7684\u662f\u4ec0\u4e48\u5462? &$obj, \u95ed\u5305\u4ea7\u751f\u7684\u5f15\u7528\u6307\u5411$obj\u8fd9\u4e2a\u540d\u5b57\u6240\u6307\u5411\u7684\u5730\u5740.
\n\/\/\u56e0\u6b64, \u65e0\u8bbaobj\u600e\u4e48\u53d8\u5316, \u90fd\u662f\u9003\u4e0d\u8131\u7684….
\n\/\/\u6240\u4ee5, \u8f93\u51fa\u7684\u5c31\u662f\u6539\u53d8\u540e\u7684\u503c
\n$obj = (object) “Hello, everyone”;
\n$callback = function () use (&$obj) {
\nprint “This is a closure use object lazy bind, msg is: {$obj->scalar}. <br \/>\/n”;
\n};
\n$obj = (object) “Hello, everybody”;
\ncallback($callback);
\n\/**
\n* \u4e00\u4e2a\u5229\u7528\u95ed\u5305\u7684\u8ba1\u6570\u5668\u4ea7\u751f\u5668
\n* \u8fd9\u91cc\u5176\u5b9e\u501f\u9274\u7684\u662fpython\u4e2d\u4ecb\u7ecd\u95ed\u5305\u65f6\u7684\u4f8b\u5b50…
\n* \u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u8003\u8651:
\n* \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a01. counter\u51fd\u6570\u6bcf\u6b21\u8c03\u7528, \u521b\u5efa\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf$counter, \u521d\u59cb\u5316\u4e3a1.
\n* \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a02. \u7136\u540e\u521b\u5efa\u4e00\u4e2a\u95ed\u5305, \u95ed\u5305\u4ea7\u751f\u4e86\u5bf9\u5c40\u90e8\u53d8\u91cf$counter\u7684\u5f15\u7528.
\n* \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a03. \u51fd\u6570counter\u8fd4\u56de\u521b\u5efa\u7684\u95ed\u5305, \u5e76\u9500\u6bc1\u5c40\u90e8\u53d8\u91cf, \u4f46\u6b64\u65f6\u6709\u95ed\u5305\u5bf9$counter\u7684\u5f15\u7528,
\n* \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u5b83\u5e76\u4e0d\u4f1a\u88ab\u56de\u6536, \u56e0\u6b64, \u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u7406\u89e3, \u88ab\u51fd\u6570counter\u8fd4\u56de\u7684\u95ed\u5305, \u643a\u5e26\u4e86\u4e00\u4e2a\u6e38\u79bb\u6001\u7684
\n* \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u53d8\u91cf.
\n* \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a04. \u7531\u4e8e\u6bcf\u6b21\u8c03\u7528counter\u90fd\u4f1a\u521b\u5efa\u72ec\u7acb\u7684$counter\u548c\u95ed\u5305, \u56e0\u6b64\u8fd4\u56de\u7684\u95ed\u5305\u76f8\u4e92\u4e4b\u95f4\u662f\u72ec\u7acb\u7684.
\n* \u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a05. \u6267\u884c\u88ab\u8fd4\u56de\u7684\u95ed\u5305, \u5bf9\u5176\u643a\u5e26\u7684\u6e38\u79bb\u6001\u53d8\u91cf\u81ea\u589e\u5e76\u8fd4\u56de, \u5f97\u5230\u7684\u5c31\u662f\u4e00\u4e2a\u8ba1\u6570\u5668.
\n* \u7ed3\u8bba: \u6b64\u51fd\u6570\u53ef\u4ee5\u7528\u6765\u751f\u6210\u76f8\u4e92\u72ec\u7acb\u7684\u8ba1\u6570\u5668.
\n*\/
\nfunction counter() {
\n$counter = 1;
\nreturn function() use(&$counter) {return $counter ++;};
\n}
\n$counter1 = counter();
\n$counter2 = counter();
\necho “counter1: ” . $counter1() . “<br \/>\/n”;
\necho “counter1: ” . $counter1() . “<br \/>\/n”;
\necho “counter1: ” . $counter1() . “<br \/>\/n”;
\necho “counter1: ” . $counter1() . “<br \/>\/n”;
\necho “counter2: ” . $counter2() . “<br \/>\/n”;
\necho “counter2: ” . $counter2() . “<br \/>\/n”;
\necho “counter2: ” . $counter2() . “<br \/>\/n”;
\necho “counter2: ” . $counter2() . “<br \/>\/n”;
\n?><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"PHP 5.3 \u52a0\u5165\u4e86\u95ed\u5305\u8bed\u6cd5\uff0c\u4e5f\u5c31\u662f\u533f\u540d\u51fd\u6570\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u7533\u660e\u884c\u5185\u51fd\u6570\u548c\u5728\u53d8\u91cf\u4e2d … \u7ee7\u7eed\u9605\u8bfb