{"id":48532,"date":"2024-12-02T14:46:57","date_gmt":"2024-12-02T06:46:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48532\/"},"modified":"2024-12-02T14:46:57","modified_gmt":"2024-12-02T06:46:57","slug":"php-%e5%87%bd%e6%95%b0%e7%9a%84%e5%87%bd%e6%95%b0%e6%8c%87%e9%92%88%e5%9c%a8%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e8%8c%83%e5%bc%8f%e4%b8%ad%e5%a6%82%e4%bd%95%e5%ba%94%e7%94%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48532\/","title":{"rendered":"PHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u5982\u4f55\u5e94\u7528\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

PHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u5982\u4f55\u5e94\u7528\uff1f<\/h1>\n

\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728\u6587\u7ae0\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300aPHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u5982\u4f55\u5e94\u7528\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n

PHP \u51fd\u6570\u6307\u9488\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u6216\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\uff0c\u652f\u6301\u51fd\u6570\u5f0f\u7f16\u7a0b\u3002\u8bed\u6cd5\u4e3a\uff1a$functionPointer = function($args = null) { … }\u3002\u5b83\u4eec\u53ef\u7528\u4e8e\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684 map() \u51fd\u6570\u3001\u56de\u8c03\u51fd\u6570\u3001\u61d2\u52a0\u8f7d\u548c\u88c5\u9970\u5668\uff0c\u4ece\u800c\u63d0\u5347\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u4e0e\u91cd\u7528\u6027\u3002<\/p>\n

\"PHP<\/p>\n

PHP \u51fd\u6570\u6307\u9488\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n

\u7b80\u4ecb<\/strong><\/p>\n

PHP \u51fd\u6570\u6307\u9488\u662f\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u6216\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\u7684\u7279\u6b8a\u8bed\u6cd5\u7ed3\u6784\u3002\u8fd9\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u8be5\u8303\u5f0f\u63d0\u5021\u4f7f\u7528\u4e0d\u53ef\u53d8\u6570\u636e\u548c\u5904\u7406\u6570\u636e\u7684\u51fd\u6570\u3002<\/p>\n

\u8bed\u6cd5<\/strong><\/p>\n

PHP \u51fd\u6570\u6307\u9488\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

$functionPointer = function($args = null) { ... };<\/pre>\n
\u8fd9\u91cc\uff0c$functionPointer<\/code> \u662f\u51fd\u6570\u6307\u9488\u53d8\u91cf\uff0cfunction<\/code> \u662f\u8981\u4f20\u9012\u6216\u5b58\u50a8\u7684\u51fd\u6570\uff0c$args<\/code> \u662f\u53ef\u9009\u7684\u53c2\u6570\u5217\u8868\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b\uff1amap() \u51fd\u6570<\/strong><\/p>\n
map() \u51fd\u6570\u662f\u4e00\u4e2a\u9ad8\u9636\u51fd\u6570\uff0c\u5b83\u5c06\u4e00\u4e2a\u51fd\u6570\u5e94\u7528\u4e8e\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u6307\u9488\u6765\u5b9e\u73b0\u4e00\u4e2a\u81ea\u5b9a\u7684 map() \u51fd\u6570\uff1a<\/p>\n
function myMap($callback, $array) {\n    $result = [];\n    foreach ($array as $element) {\n        $result[] = $callback($element);\n    }\n    return $result;\n}\n\n$numbers = [1, 2, 3, 4, 5];\n$mapped_numbers = myMap(function($num) { return $num * 2; }, $numbers);\n\nprint_r($mapped_numbers);  \/\/ \u8f93\u51fa\uff1a[2, 4, 6, 8, 10]<\/pre>\n
\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u4e00\u4e2a\u533f\u540d\u51fd\u6570\u6307\u9488\u6765\u5c06\u6bcf\u4e2a\u6570\u5b57\u4e58\u4ee5 2\uff0c\u5e76\u5b58\u50a8\u5728 $mapped_numbers<\/code> \u6570\u7ec4\u4e2d\u3002<\/p>\n
\u5176\u4ed6\u5e94\u7528\u573a\u666f<\/strong><\/p>\n
    \n
  • \u56de\u8c03\u51fd\u6570\uff1a<\/strong>\u51fd\u6570\u6307\u9488\u53ef\u4ee5\u4f5c\u4e3a\u56de\u8c03\u51fd\u6570\u4f20\u9012\u7ed9\u5176\u4ed6\u51fd\u6570\u6216\u65b9\u6cd5\u3002<\/li>\n
  • \u61d2\u52a0\u8f7d\uff1a<\/strong>\u901a\u8fc7\u5ef6\u8fdf\u51fd\u6570\u7684\u6267\u884c\uff0c\u51fd\u6570\u6307\u9488\u53ef\u4ee5\u5b9e\u73b0\u61d2\u52a0\u8f7d\u673a\u5236\u3002<\/li>\n
  • \u88c5\u9970\u5668\uff1a<\/strong>\u51fd\u6570\u6307\u9488\u53ef\u4ee5\u7528\u6765\u88c5\u9970\u5176\u4ed6\u51fd\u6570\uff0c\u4e3a\u5176\u6dfb\u52a0\u9644\u52a0\u529f\u80fd\u3002<\/li>\n<\/ul>\n
    \u7ed3\u8bba<\/strong><\/p>\n
    \u51fd\u6570\u6307\u9488\u5728 PHP \u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u662f\u4e00\u4e2a\u6709\u529b\u7684\u5de5\u5177\uff0c\u5b83\u5141\u8bb8\u521b\u5efa\u66f4\u7075\u6d3b\u4e14\u53ef\u91cd\u7528\u7684\u4ee3\u7801\u3002\u901a\u8fc7\u7406\u89e3\u5b83\u4eec\u7684\u8bed\u6cd5\u548c\u5b9e\u9645\u5e94\u7528\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5145\u5206\u5229\u7528\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u4f18\u52bf\u3002<\/p>\n
    \u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aPHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u5982\u4f55\u5e94\u7528\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    PHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u5982\u4f55\u5e94\u7528\uff1f \u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728\u6587\u7ae0\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300aPHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u5982\u4f55\u5e94\u7528\uff1f\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~ PHP \u51fd\u6570\u6307\u9488\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u6216\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\uff0c\u652f\u6301\u51fd\u6570\u5f0f\u7f16\u7a0b\u3002\u8bed\u6cd5\u4e3a\uff1a$functionPointer = function($args = null) { … }\u3002\u5b83\u4eec\u53ef\u7528\u4e8e\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684 map() \u51fd\u6570\u3001\u56de\u8c03\u51fd\u6570\u3001\u61d2\u52a0\u8f7d\u548c\u88c5\u9970\u5668\uff0c\u4ece\u800c\u63d0\u5347\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u4e0e\u91cd\u7528\u6027\u3002 PHP \u51fd\u6570\u6307\u9488\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u7684\u5e94\u7528 \u7b80\u4ecb PHP \u51fd\u6570\u6307\u9488\u662f\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u6216\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\u7684\u7279\u6b8a\u8bed\u6cd5\u7ed3\u6784\u3002\u8fd9\u5728\u51fd\u6570\u5f0f\u7f16\u7a0b\u8303\u5f0f\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u8be5\u8303\u5f0f\u63d0\u5021\u4f7f\u7528\u4e0d\u53ef\u53d8\u6570\u636e\u548c\u5904\u7406\u6570\u636e\u7684\u51fd\u6570\u3002 \u8bed\u6cd5 PHP \u51fd\u6570\u6307\u9488\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a $functionPointer = function($args = null) { … }; \u8fd9\u91cc\uff0c$functionPointer \u662f\u51fd\u6570\u6307\u9488\u53d8\u91cf\uff0cfunction \u662f\u8981\u4f20\u9012\u6216\u5b58\u50a8\u7684\u51fd\u6570\uff0c$args \u662f\u53ef\u9009\u7684\u53c2\u6570\u5217\u8868\u3002 \u5b9e\u6218\u6848\u4f8b\uff1amap() \u51fd\u6570 map() \u51fd\u6570\u662f\u4e00\u4e2a\u9ad8\u9636\u51fd\u6570\uff0c\u5b83\u5c06\u4e00\u4e2a\u51fd\u6570\u5e94\u7528\u4e8e\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u6307\u9488\u6765\u5b9e\u73b0\u4e00\u4e2a\u81ea\u5b9a\u7684 map() \u51fd\u6570\uff1a function myMap($callback, $array) { $result = []; foreach ($array as $element) { $result[] = […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-48532","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48532","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=48532"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48532\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=48532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=48532"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=48532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}