{"id":217754,"date":"2023-12-22T23:42:32","date_gmt":"2023-12-22T15:42:32","guid":{"rendered":"https:\/\/www.idc.net\/help\/217754\/"},"modified":"2023-12-22T23:42:32","modified_gmt":"2023-12-22T15:42:32","slug":"php%e4%bd%bf%e7%94%a8%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bd%bf%e7%94%a8array_filter%e4%bd%bf%e7%94%a8%e5%9b%9e%e8%b0%83%e5%87%bd%e6%95%b0%e8%bf%87%e6%bb%a4%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e5%85%83-2","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217754\/","title":{"rendered":"PHP\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528array_filter\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20"},"content":{"rendered":"<p><title id=\"php%e4%bd%bf%e7%94%a8%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bd%bf%e7%94%a8array_filter%e4%bd%bf%e7%94%a8%e5%9b%9e%e8%b0%83%e5%87%bd%e6%95%b0%e8%bf%87%e6%bb%a4%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e5%85%83-bSTNlFHppf\">PHP\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528array_filter\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20<\/title><\/p>\n<h1 id=\"php%e4%bd%bf%e7%94%a8%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bd%bf%e7%94%a8array_filter%e4%bd%bf%e7%94%a8%e5%9b%9e%e8%b0%83%e5%87%bd%e6%95%b0%e8%bf%87%e6%bb%a4%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e5%85%83-bSTNlFHppf\">PHP\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528array_filter\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20<\/h1>\n<p>\u5728PHP\u4e2d\uff0carray_filter\u51fd\u6570\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u6839\u636e\u56de\u8c03\u51fd\u6570\u7684\u8fd4\u56de\u503c\u6765\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u8fd9\u4e2a\u51fd\u6570\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u3001\u7b80\u4fbf\u5730\u5904\u7406\u6570\u7ec4\uff0c\u53ea\u4fdd\u7559\u6211\u4eec\u9700\u8981\u7684\u5143\u7d20\u3002<\/p>\n<h2 id=\"array_filter%e5%87%bd%e6%95%b0%e7%9a%84%e8%af%ad%e6%b3%95-bSTNlFHppf\">array_filter\u51fd\u6570\u7684\u8bed\u6cd5<\/h2>\n<p>array_filter\u51fd\u6570\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>\narray_filter(array $array, callable $callback, int $flag = 0): array\n<\/pre>\n<p>\u53c2\u6570\u8bf4\u660e\uff1a<\/p>\n<ul>\n<li><code>$array<\/code>: \u8981\u8fc7\u6ee4\u7684\u6570\u7ec4<\/li>\n<li><code>$callback<\/code>: \u56de\u8c03\u51fd\u6570\uff0c\u7528\u4e8e\u5224\u65ad\u6570\u7ec4\u5143\u7d20\u662f\u5426\u4fdd\u7559<\/li>\n<li><code>$flag<\/code>: \u53ef\u9009\u53c2\u6570\uff0c\u7528\u4e8e\u6307\u5b9a\u56de\u8c03\u51fd\u6570\u7684\u884c\u4e3a<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8array_filter%e5%87%bd%e6%95%b0%e8%bf%87%e6%bb%a4%e6%95%b0%e7%bb%84-bSTNlFHppf\">\u4f7f\u7528array_filter\u51fd\u6570\u8fc7\u6ee4\u6570\u7ec4<\/h2>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528array_filter\u51fd\u6570\u8fc7\u6ee4\u6570\u7ec4\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>\n$numbers = [1, 2, 3, 4, 5];\n\n$evenNumbers = array_filter($numbers, function($number) {\n    return $number % 2 == 0;\n});\n\nprint_r($evenNumbers);\n<\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>\nArray\n(\n    [1] =&gt; 2\n    [3] =&gt; 4\n)\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u6570\u7ec4$numbers\uff0c\u7136\u540e\u4f7f\u7528array_filter\u51fd\u6570\u548c\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u6765\u8fc7\u6ee4\u51fa\u5176\u4e2d\u7684\u5076\u6570\u3002\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528print_r\u51fd\u6570\u6253\u5370\u51fa\u8fc7\u6ee4\u540e\u7684\u6570\u7ec4\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%9b%9e%e8%b0%83%e5%87%bd%e6%95%b0%e8%bf%87%e6%bb%a4%e6%95%b0%e7%bb%84-bSTNlFHppf\">\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u8fc7\u6ee4\u6570\u7ec4<\/h2>\n<p>\u56de\u8c03\u51fd\u6570\u662farray_filter\u51fd\u6570\u7684\u6838\u5fc3\uff0c\u5b83\u7528\u4e8e\u5224\u65ad\u6570\u7ec4\u5143\u7d20\u662f\u5426\u4fdd\u7559\u3002\u56de\u8c03\u51fd\u6570\u63a5\u53d7\u4e00\u4e2a\u53c2\u6570\uff0c\u5373\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff0c\u7136\u540e\u6839\u636e\u9700\u8981\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u8fc7\u6ee4\u6570\u7ec4\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>\n$fruits = ['apple', 'banana', 'orange', 'grape'];\n\n$filteredFruits = array_filter($fruits, function($fruit) {\n    return strlen($fruit) &gt; 5;\n});\n\nprint_r($filteredFruits);\n<\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>\nArray\n(\n    [2] =&gt; orange\n)\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u6570\u7ec4$fruits\uff0c\u7136\u540e\u4f7f\u7528array_filter\u51fd\u6570\u548c\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u6765\u8fc7\u6ee4\u51fa\u5176\u4e2d\u957f\u5ea6\u5927\u4e8e5\u7684\u6c34\u679c\u3002\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528print_r\u51fd\u6570\u6253\u5370\u51fa\u8fc7\u6ee4\u540e\u7684\u6570\u7ec4\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-bSTNlFHppf\">\u603b\u7ed3<\/h2>\n<p>array_filter\u51fd\u6570\u662fPHP\u4e2d\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u6839\u636e\u56de\u8c03\u51fd\u6570\u7684\u8fd4\u56de\u503c\u6765\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u901a\u8fc7\u4f7f\u7528array_filter\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u5feb\u901f\u3001\u7b80\u4fbf\u5730\u5904\u7406\u6570\u7ec4\uff0c\u53ea\u4fdd\u7559\u6211\u4eec\u9700\u8981\u7684\u5143\u7d20\u3002<\/p>\n<p>\u5982\u679c\u4f60\u60f3\u4e86\u89e3\u66f4\u591a\u5173\u4e8ePHP\u7684\u4f7f\u7528\u624b\u518c\uff0c\u8bf7\u8bbf\u95ee<a href=\"https:\/\/www.php.net\/manual\/zh\/\" rel=\"nofollow noopener\" target=\"_blank\">PHP\u5b98\u65b9\u6587\u6863<\/a>\u3002<\/p>\n<h3 id=\"%e9%a6%99%e6%b8%af%e6%9c%8d%e5%8a%a1%e5%99%a8%e9%a6%96%e9%80%89%e5%90%8e%e6%b5%aa%e4%ba%91-bSTNlFHppf\">\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91<\/h3>\n<p>\u540e\u6d6a\u4e91\u662f\u4e00\u5bb6\u4e13\u4e1a\u7684\u4e91\u8ba1\u7b97\u516c\u53f8\uff0c\u63d0\u4f9b\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7b49\u4ea7\u54c1\u3002\u4f5c\u4e3a\u4e00\u5bb6\u9886\u5148\u7684\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\uff0c\u540e\u6d6a\u4e91\u4e3a\u5ba2\u6237\u63d0\u4f9b\u9ad8\u6027\u80fd\u3001\u7a33\u5b9a\u53ef\u9760\u7684\u670d\u52a1\u5668\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u540e\u6d6a\u4e91\u662f\u60a8\u7684\u9996\u9009\u3002\u6211\u4eec\u63d0\u4f9b\u591a\u79cd\u914d\u7f6e\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u6ee1\u8db3\u4e0d\u540c\u5ba2\u6237\u7684\u9700\u6c42\u3002\u65e0\u8bba\u60a8\u662f\u4e2a\u4eba\u7528\u6237\u8fd8\u662f\u4f01\u4e1a\u7528\u6237\uff0c\u540e\u6d6a\u4e91\u90fd\u80fd\u4e3a\u60a8\u63d0\u4f9b\u9ad8\u8d28\u91cf\u7684\u9999\u6e2f\u670d\u52a1\u5668\u3002<\/p>\n<p>\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u540e\u6d6a\u4e91\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u8bf7\u8bbf\u95ee<a href=\"https:\/\/idc.net\/zh-cn\/hongkong-servers\">https:\/\/idc.net\/zh-cn\/hongkong-servers<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528array_filter\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u8fc7\u6ee4\u6570\u7ec4\u4e2d\u7684\u5143\u7d20 PHP\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528array_fi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[197851],"tags":[],"class_list":["post-217754","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217754","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=217754"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217754\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217754"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217754"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}