{"id":30510,"date":"2024-03-03T08:21:13","date_gmt":"2023-09-22T21:02:19","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/"},"modified":"2025-08-12T19:31:18","modified_gmt":"2025-08-12T11:31:18","slug":"%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/","title":{"rendered":"\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49"},"content":{"rendered":"<h1>\u9996\u5148<\/p>\n<p>\u9019\u662f\u4e00\u7bc7\u4ecb\u7d39\u5728\u6211\u4f5c\u70ba\u4e8c\u5e74PHP\u7d93\u9a57\u7684\u4eba\u63a5\u89f8PHP\u6642\uff0c\u6211\u8a8d\u70ba\u61c9\u8a72\u77e5\u9053\u548c\u4f7f\u7528\u7684\u4e00\u4e9b\u898f\u7bc4\u548c\u5be6\u7528\u51fd\u6578\u7684\u6587\u7ae0\u3002\uff08\u5982\u679c\u6709\u932f\u8aa4\uff0c\u8acb\u6307\u6b63\uff01\uff09<\/p>\n<h2>\u5047\u8bbe<\/p>\n<p>\u5173\u4e8e PHP \u7684\u7248\u672c\uff0c\u6211\u4ee5 8.2 \u4f5c\u4e3a\u524d\u63d0\u3002<\/p>\n<h2>isset\u3001empty\u3001is_null\u7684\u533a\u522b\u3002<\/p>\n<p>These are the differences between isset\u3001empty\u3001is_null.<\/p>\n<p>\u5224\u65ad\u4e00\u4e2a\u503c\u662f\u5426\u5b58\u5728\uff0c\u901a\u5e38\u4f1a\u4f7f\u7528\u4ee5\u4e0b\u4e09\u4e2a\u57fa\u672c\u65b9\u6cd5\u3002<\/p>\n<ul class=\"post-ul\">\nisset<br \/>\nempty<br \/>\nis_null\n<\/ul>\n<p>\u4ee5\u4e0b\u7684\u8868\u683c\u975e\u5e38\u6e05\u695a\u5730\u663e\u793a\u4e86\u53ef\u53d6\u503c\u4e4b\u95f4\u7684\u5dee\u5f02\u3002<\/p>\n<div>\n<div class=\"post-table\">\n<thead>\n<tr data-sourcepos=\"16:1-16:34\">\n<th style=\"text-align: left\" data-sourcepos=\"16:2-16:4\">\u5024<\/th>\n<th style=\"text-align: center\" data-sourcepos=\"16:6-16:13\">if($var)<\/th>\n<th style=\"text-align: center\" data-sourcepos=\"16:15-16:19\">isset<\/th>\n<th style=\"text-align: center\" data-sourcepos=\"16:21-16:25\">empty<\/th>\n<th style=\"text-align: center\" data-sourcepos=\"16:27-16:33\">is_null<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr data-sourcepos=\"18:1-18:30\">\n<td style=\"text-align: left\" data-sourcepos=\"18:2-18:7\">$var=1<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"18:9-18:12\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"18:14-18:17\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"18:19-18:23\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"18:25-18:29\">false<\/td>\n<\/tr>\n<tr data-sourcepos=\"19:1-19:32\">\n<td style=\"text-align: left\" data-sourcepos=\"19:2-19:9\">$var=&#8221;&#8221;;<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"19:11-19:15\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"19:17-19:20\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"19:22-19:25\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"19:27-19:31\">false<\/td>\n<\/tr>\n<tr data-sourcepos=\"20:1-20:33\">\n<td style=\"text-align: left\" data-sourcepos=\"20:2-20:10\">$var=&#8221;0&#8243;;<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"20:12-20:16\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"20:18-20:21\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"20:23-20:26\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"20:28-20:32\">false<\/td>\n<\/tr>\n<tr data-sourcepos=\"21:1-21:31\">\n<td style=\"text-align: left\" data-sourcepos=\"21:2-21:8\">$var=0;<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"21:10-21:14\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"21:16-21:19\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"21:21-21:24\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"21:26-21:30\">false<\/td>\n<\/tr>\n<tr data-sourcepos=\"22:1-22:34\">\n<td style=\"text-align: left\" data-sourcepos=\"22:2-22:11\">$var=NULL;<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"22:13-22:17\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"22:19-22:23\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"22:25-22:28\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"22:30-22:33\">true<\/td>\n<\/tr>\n<tr data-sourcepos=\"23:1-23:28\">\n<td style=\"text-align: left\" data-sourcepos=\"23:2-23:5\">$var<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"23:7-23:11\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"23:13-23:17\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"23:19-23:22\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"23:24-23:27\">true<\/td>\n<\/tr>\n<tr data-sourcepos=\"24:1-24:36\">\n<td style=\"text-align: left\" data-sourcepos=\"24:2-24:13\">$var=array()<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"24:15-24:19\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"24:21-24:24\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"24:26-24:29\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"24:31-24:35\">false<\/td>\n<\/tr>\n<tr data-sourcepos=\"25:1-25:37\">\n<td style=\"text-align: left\" data-sourcepos=\"25:2-25:14\">$var=array(1)<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"25:16-25:19\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"25:21-25:24\">true<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"25:26-25:30\">false<\/td>\n<td style=\"text-align: center\" data-sourcepos=\"25:32-25:36\">false<\/td>\n<\/tr>\n<\/tbody>\n<blockquote><p>\u5f15\u7528\uff1aPHP \u4e2d isset\u3001empty \u548c is_null \u7684\u533a\u522b\u5feb\u901f\u67e5\u8be2\u8868<\/p><\/blockquote>\n<p>\u91cd\u8981\u7684\u662f\u8981\u786e\u5207\u7406\u89e3\u548c\u6b63\u786e\u8fd0\u7528\u8fd9\u4e9b\u60c5\u51b5\u4e0b\u54ea\u4e9b\u503c\u4f1a\u4f7f\u6761\u4ef6\u4e3a\u771f\uff08true\uff09\u3002<\/p>\n<p>\u5728\u4f7f\u7528PHP\u5b9e\u73b0\u5b88\u62a4\u5b50\u53e5\u3001\u5f02\u5e38\u5904\u7406\u7b49\u65b9\u9762\uff0c\u8fd9\u4e9b\u884c\u4e3a\u5dee\u5f02\u975e\u5e38\u4e25\u91cd\u3002<br \/>\n\u5373\u4f7f\u662f\u4e00\u70b9\u70b9\u7684\u8bef\u89e3\u6216\u4e0d\u6070\u5f53\u7684\u51fd\u6570\u4f7f\u7528\u4e5f\u4f1a\u5bfc\u81f4\u9519\u8bef\u548c\u6545\u969c\u3002<\/p>\n<p>\u8bb0\u4f4f\u4ee5\u4e0b\u4e24\u70b9\uff0c\u5c31\u80fd\u66f4\u987a\u5229\u5730\u5206\u522b\u4f7f\u7528\u5b83\u4eec\u3002<\/p>\n<h3>\u4e86\u89e3\u5e03\u5c14\u7c7b\u578b\u5728\u8f6c\u6362\uff08\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\uff09\u65f6\u88ab\u89c6\u4e3afalse\u7684\u503c\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u5f53\u8fdb\u884cboolean\u7684\u663e\u5f0f\u7c7b\u578b\u8f6c\u6362\u65f6\uff0c\u8fd4\u56defalse\u7684\u503c\u5982\u4e0b\uff1a<\/p>\n<ul class=\"post-ul\">\nboolean \u306e false<br \/>\ninteger \u306e 0 (\u30bc\u30ed)<br \/>\nfloat \u306e 0.0 \u304a\u3088\u3073 -0.0 (\u30bc\u30ed)<br \/>\n\u7a7a\u306e\u6587\u5b57\u5217 &#8220;&#8221;\u3001 \u304a\u3088\u3073\u6587\u5b57\u5217\u306e &#8220;0&#8221;<br \/>\n\u8981\u7d20\u306e\u6570\u304c\u30bc\u30ed\u3067\u3042\u308b \u914d\u5217<br \/>\nNULL\n<\/ul>\n<pre class=\"post-pre\"><code><span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span> <span class=\"kc\">false<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ false<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span> <span class=\"mi\">0<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ false<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span> <span class=\"mf\">0.0<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ false<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"\"<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ false<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"0\"<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ false<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span> <span class=\"p\">[]);<\/span> <span class=\"c1\">\/\/ false<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">((<\/span><span class=\"n\">bool<\/span><span class=\"p\">)<\/span> <span class=\"kc\">null<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ false<\/span>\r\n<\/code><\/pre>\n<p><a><\/a><\/p>\n<p>\u5728\u5c06\u5176\u8f6c\u6362\u4e3a\u5e03\u5c14\u578b\u65f6\u88ab\u89c6\u4e3afalse\u7684\u503c\uff08\u4ee5\u4e0b\u79f0\u4e3a&#8221;\u5047\u503c&#8221;\uff09\u7528\u4e8e\u5224\u65ad\u65f6\uff0c\u4f7f\u7528\u7684\u662fempty\u3002<\/p>\n<p>\u5f53\u67e5\u770b\u4e0a\u8868\u65f6\uff0c\u53ef\u4ee5\u53d1\u73b0\u5728\u4e0a\u8ff0\u60c5\u51b5\u4e0b\u6240\u6709\u90fd\u662f\u771f\uff08true)\u3002<\/p>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d07b437434c4406bdec3f\/20-0.png\" class='post-images' alt=\"undefined\" title=\"\"><\/p>\n<p>\u800c\u4e14\uff0cif($var)\u662f\u4e0eempty\u5b8c\u5168\u76f8\u53cd\u7684\u52a8\u4f5c\u3002<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u5f53\u6211\u4eec\u5c06$var\u4f5c\u4e3aif($var)\u7684\u6761\u4ef6\u65f6\uff0c\u53ea\u6709\u5f53\u5c06\u5176\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u5e76\u88ab\u89c6\u4e3atrue\u65f6\uff08empty\u51fd\u6570\u5c06\u5176\u89c6\u4e3afalse\uff09\uff0c\u624d\u6ee1\u8db3\u6761\u4ef6\u3002<\/p>\n<h3>\u5f53isset\u7684\u53c2\u6570\u4e0d\u662f&#8221;\u672a\u5b9a\u4e49\u6216\u8005NULL&#8221;\u65f6\uff0c\u8fd4\u56de\u771f\uff08true\uff09\u3002<\/p>\n<p>\u5982\u679c\u60a8\u67e5\u770b\u8868\u683c\uff0c\u60a8\u4f1a\u660e\u767disset\u5728\u503c\u4e0d\u662f\u201c\u672a\u5b9a\u4e49\u6216NULL\u201d\u65f6\u8fd4\u56detrue\u3002<br \/>\n\u6362\u53e5\u8bdd\u8bf4\uff0c\u9664\u4e86\u8fd9\u4e24\u79cd\u60c5\u51b5\u4e4b\u5916\uff0c\u5b83\u5c06\u8fd4\u56detrue\u3002<br \/>\n\u53e6\u5916\uff0cis_null\u4f1a\u8fd4\u56deisset\u5b8c\u5168\u76f8\u53cd\u7684\u7ed3\u679c\uff08\u5f53isset\u4e3atrue\u65f6\uff0cis_null\u5c06\u4e3afalse\uff09\u3002<\/p>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d07b437434c4406bdec3f\/25-0.png\" class='post-images' alt=\"undefined\" title=\"\"><a><\/a><\/p>\n<h2>\u903b\u8f91\u4e0e\uff08&#038;&#038;\uff09\u3001\u903b\u8f91\u6216\uff08||\uff09\u7684\u8bc4\u4f30\u884c\u4e3a<\/p>\n<p>\u53ea\u6709\u5f53\u903b\u8f91\u4e0e\uff08&#038;&#038;\uff09\u8fd0\u7b97\u7b26\u7684\u5de6\u53f3\u4e24\u4e2a\u503c\u90fd\u4e3atrue\u65f6\uff0c\u5b83\u624d\u4f1a\u8fd4\u56detrue\uff0c\u4f46\u5982\u679c\u5de6\u8fb9\u7684\u503c\u4e3afalse\uff0c\u5219\u4e0d\u4f1a\u5bf9\u53f3\u8fb9\u7684\u503c\u8fdb\u884c\u8bc4\u4f30\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u4ee5\u4e0b\u7684hoge\u51fd\u6570\u5c06\u4e0d\u4f1a\u88ab\u8c03\u7528\u3002\u7ecf\u5e38\u4f7f\u7528JS\u548cTS\u7684\u4eba\u53ef\u80fd\u5bf9\u8fd9\u79cd\u884c\u4e3a\u5f88\u719f\u6089\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">function<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">()<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s1\">'hoge'<\/span> <span class=\"mf\">.<\/span> <span class=\"kc\">PHP_EOL<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"kc\">true<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"kc\">false<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"nv\">$hoge<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">hoge<\/span><span class=\"p\">())<\/span> <span class=\"p\">{<\/span> <span class=\"c1\">\/\/ \u5de6\u306e\u5024\u304cfalse\u306e\u305f\u3081\u53f3\u306e\u5024\uff08hoge\u95a2\u6570\uff09\u306f\u8a55\u4fa1\u3055\u308c\u306a\u3044<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u51fa\u529b\u306a\u3057<\/span>\r\n<\/code><\/pre>\n<p>\u4e00\u65b9\uff0c\u5c31\u903b\u8f91\u800c\u8a00\uff0c\u5f53\u8fd0\u7b97\u7b26\u7684\u5de6\u8fb9\u503c\u4e3a\u771f\u65f6\uff0c\u53f3\u8fb9\u7684\u503c\u5c31\u4e0d\u4f1a\u88ab\u8bc4\u4f30\u3002\uff08\u53ea\u6709\u5f53\u5de6\u8fb9\u7684\u503c\u4e3a\u5047\u65f6\u624d\u4f1a\u8bc4\u4f30\u53f3\u8fb9\u7684\u503c\uff09<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">function<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">()<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s1\">'hoge'<\/span> <span class=\"mf\">.<\/span> <span class=\"kc\">PHP_EOL<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"k\">return<\/span> <span class=\"kc\">true<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"kc\">true<\/span> <span class=\"o\">||<\/span> <span class=\"nv\">$hoge<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">hoge<\/span><span class=\"p\">())<\/span> <span class=\"p\">{<\/span> <span class=\"c1\">\/\/ \u5de6\u306e\u5024\u304ctrue\u306e\u305f\u3081\u53f3\u306e\u5024\uff08hoge\u95a2\u6570\uff09\u306f\u8a55\u4fa1\u3055\u308c\u306a\u3044<\/span>\r\n    <span class=\"k\">echo<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<span class=\"c1\">\/\/ fuga<\/span>\r\n<\/code><\/pre>\n<h2>\u4f7f\u7528\u4e09\u5143\u8fd0\u7b97\u7b26\u7684\u7b80\u5199\u5f62\u5f0f\uff08Elvis\u8fd0\u7b97\u7b26\uff09\u548cNull\u5408\u5e76\u8fd0\u7b97\u7b26\u4e88\u4ee5\u533a\u5206\u3002<\/p>\n<p>\u5f53Null\u5408\u5e76\u8fd0\u7b97\u7b26\u7684\u5de6\u4fa7\u7684\u503c\u88ab\u201cisset\u8bc4\u4f30\u4e3atrue\u201d\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd4\u56de\u5de6\u4fa7\u7684\u503c\uff1b\u5426\u5219\u8fd4\u56de\u53f3\u4fa7\u7684\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[];<\/span>\r\n\r\n<span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">null<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nv\">$hoge<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">;<\/span> <span class=\"c1\">\/\/ \u5de6\u306e\u5024\u304cnull\uff08isset\u3067false\u3068\u8a55\u4fa1\u3055\u308c\u308b\uff09\u306e\u305f\u3081\u53f3\u306e\u5024\u3092\u8fd4\u3059<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$hoge<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ 'fuga'<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u5de6\u8fb9\u7684\u503c\u662f\u7a7a\u5b57\u7b26\u4e32\u6216\u7a7a\u6570\u7ec4\uff0c\u90a3\u4e48\u4f7f\u7528isset\u51fd\u6570\u4f1a\u8fd4\u56deTrue\uff0c\u4ece\u800c\u8fd4\u56de\u5de6\u8fb9\u7684\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[];<\/span>\r\n\r\n<span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">''<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[];<\/span>\r\n\r\n<span class=\"nv\">$hoge1<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$hoge2<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span> <span class=\"o\">??<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$hoge1<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ ''<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$hoge2<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ []<\/span>\r\n<\/code><\/pre>\n<p>\u5f53\u5de6\u4fa7\u7684\u503c\u4e3afalsy\u503c\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528Elvis\u8fd0\u7b97\u7b26\uff08\u4e09\u5143\u8fd0\u7b97\u7b26\u7684\u7b80\u5316\u5f62\u5f0f\uff09\u8fd4\u56de\u53f3\u4fa7\u7684\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[];<\/span>\r\n\r\n<span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">''<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[];<\/span>\r\n<span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">2<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">null<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nv\">$hoge1<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">?:<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$hoge2<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span> <span class=\"o\">?:<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$hoge3<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$arr<\/span><span class=\"p\">[<\/span><span class=\"mi\">2<\/span><span class=\"p\">]<\/span> <span class=\"o\">?:<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$hoge1<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ 'fuga'<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$hoge2<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ 'fuga'<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$hoge3<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ 'fuga'<\/span>\r\n<\/code><\/pre>\n<p><a><\/a><\/p>\n<h2>\u52a8\u6001\u5c5e\u6027\u662f\u53ef\u8bbe\u7f6e\u7684\uff08\u4f46\u4e0d\u5e94\u8be5\u4f7f\u7528\uff09<\/p>\n<p>\u5728PHP\u4e2d\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u8bbe\u7f6e\u52a8\u6001\u5c5e\u6027\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">Hoge<\/span><span class=\"p\">{}<\/span>\r\n\r\n<span class=\"nv\">$hoge<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Hoge<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"nv\">$hoge<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">test<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'test'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$hoge<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"nf\">object<\/span><span class=\"p\">(<\/span><span class=\"nc\">Hoge<\/span><span class=\"p\">)<\/span><span class=\"c1\">#1 (1) {<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"s2\">\"test\"<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"test\"<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u6211\u4eec\u5e94\u8be5\u907f\u514d\u4f7f\u7528\u5b83\u3002\uff08\u5728PHP8.2\u4e2d\uff0c\u52a8\u6001\u5c5e\u6027\u5df2\u88ab\u5f03\u7528\uff09<br \/>\n\u4e0d\u77e5\u9053\u5c5e\u6027\u88ab\u8bbe\u7f6e\u5728\u54ea\u91cc\u548c\u4ec0\u4e48\u5c5e\u6027\u7684\u60c5\u51b5\u4f1a\u6210\u4e3a\u610f\u6599\u4e4b\u5916\u7684\u9519\u8bef\u548c\u6545\u969c\u7684\u6e29\u5e8a\u3002<\/p>\n<h2>\u4f7f\u7528array_filter\u51fd\u6570\u6765\u5220\u9664\u5047\u503c\u3002<\/p>\n<p>\u5f53\u9700\u8981\u5c06\u4ee5\u4e0b\u6570\u7ec4\u4e2d\u7684null\u6216\u7a7a\u5b57\u7b26\u4e32\u503c\u5220\u9664\u65f6\uff0c\u6211\u4eec\u8be5\u5982\u4f55\u505a\u5462\uff1f<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"mi\">0<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'hoge'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">1<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"kc\">null<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">2<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'test'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">3<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"mi\">3<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">4<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">''<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">];<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u60f3\u8981\u7b5b\u9009\u6570\u7ec4\u7684\u5143\u7d20\uff0c\u4f7f\u7528array_filter\u4f3c\u4e4e\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002<br \/>\n\u5c31\u50cf\u8fd9\u6837\u2026<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$newArr<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">array_filter<\/span><span class=\"p\">(<\/span><span class=\"nv\">$arr<\/span><span class=\"p\">,<\/span> <span class=\"k\">fn<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$value<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"o\">!<\/span> <span class=\"k\">empty<\/span><span class=\"p\">(<\/span><span class=\"nv\">$value<\/span><span class=\"p\">));<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$newArr<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">array<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"hoge\"<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">2<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"test\"<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">3<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">int<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0carray_filter\u51fd\u6570\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u5219\u5177\u6709\u8fd9\u6837\u7684\u7279\u6027\uff1a\u5b83\u5c06\u5220\u9664\u5047\u503c\uff08\u5173\u4e8e\u5047\u503c\u7684\u4e0d\u540c\u4e4b\u5904\u8bf7\u53c2\u8003isset\u3001empty\u3001is_null\u7684\u533a\u522b\uff09\uff0c\u56e0\u6b64\uff0c\u4e0a\u8ff0\u63cf\u8ff0\u53ef\u4ee5\u7b80\u5316\u4e3a\u4ee5\u4e0b\u5f62\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$newArr<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">array_filter<\/span><span class=\"p\">(<\/span><span class=\"nv\">$arr<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$newArr<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">array<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"hoge\"<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">2<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"test\"<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">3<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">int<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p><a><\/a><\/p>\n<h2>\u4f7f\u7528array_values\u51fd\u6570\u6765\u91cd\u65b0\u4e3a\u6570\u7ec4\u5206\u914d\u7d22\u5f15\u503c\u3002<\/p>\n<p>\u5f53\u67e5\u770b\u4e0a\u8ff0array_filter\u51fd\u6570\u5220\u9664\u540e\u7684\u6700\u7ec8\u8f93\u51fa\u65f6\uff0c\u53ef\u4ee5\u660e\u663e\u770b\u5230\u6570\u7ec4\u7684\u7d22\u5f15\u4ecd\u7136\u4fdd\u6301\u539f\u59cb\u6570\u7ec4\u7684\u7d22\u5f15\uff0c\u5e76\u4e0d\u662f\u8fde\u7eed\u7684\u5e8f\u5217\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">array<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"hoge\"<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">2<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"test\"<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">3<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">int<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5f53\u6211\u4eec\u5e0c\u671b\u5c06\u8fd9\u79cd\u6570\u7ec4\u7684\u7d22\u5f15\u6309\u6b63\u786e\u7684\u987a\u5e8f\u6392\u5217\u65f6\uff0carray_values\u975e\u5e38\u65b9\u4fbf\u3002\uff08array_values\u672c\u6765\u662f\u4e00\u4e2a\u8fd4\u56de\u6570\u7ec4\u4e2d\u6240\u6709\u503c\u7684\u51fd\u6570\uff09<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"mi\">0<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'hoge'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">1<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"kc\">null<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">2<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'test'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">3<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"mi\">3<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">4<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">''<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">];<\/span>\r\n\r\n<span class=\"nv\">$newArr<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">array_filter<\/span><span class=\"p\">(<\/span><span class=\"nv\">$arr<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nv\">$newArr2<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">array_values<\/span><span class=\"p\">(<\/span><span class=\"nv\">$newArr<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$newArr2<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">array<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"hoge\"<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"test\"<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">2<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">int<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p><a><\/a><\/p>\n<h2>\u4f20\u9012null\u7ed9array_map\u7684\u56de\u8c03\u51fd\u6570\uff0c\u6267\u884c\u6570\u7ec4\u7684zip\u64cd\u4f5c\u3002<\/p>\n<p>array_map\u51fd\u6570\u53ef\u4ee5\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff08\u53ca\u4ee5\u540e\uff09\u4e2d\u6307\u5b9a\u591a\u4e2a\u6570\u7ec4\u3002<br \/>\n\u56e0\u6b64\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u5c06null\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\u4f20\u9012\u6765\u6267\u884c\u6570\u7ec4\u7684zip\u64cd\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"mi\">1<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">2<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"mi\">3<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">];<\/span>\r\n\r\n<span class=\"nv\">$arr2<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"s1\">'one'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"s1\">'two'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"s1\">'three'<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">];<\/span>\r\n\r\n<span class=\"nv\">$newArr<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">array_map<\/span><span class=\"p\">(<\/span><span class=\"kc\">null<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$arr<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$arr2<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$newArr<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">array<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"k\">array<\/span><span class=\"p\">(<\/span><span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n    <span class=\"nf\">int<\/span><span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n    <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"one\"<\/span>\r\n  <span class=\"p\">}<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"k\">array<\/span><span class=\"p\">(<\/span><span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n    <span class=\"nf\">int<\/span><span class=\"p\">(<\/span><span class=\"mi\">2<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n    <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"two\"<\/span>\r\n  <span class=\"p\">}<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"mi\">2<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"k\">array<\/span><span class=\"p\">(<\/span><span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n    <span class=\"nf\">int<\/span><span class=\"p\">(<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n    <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">5<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"three\"<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u7528\u6765\u5c06\u4e24\u4e2a\u6216\u66f4\u591a\u6570\u7ec4\u4e2d\u76f8\u540c\u4e0b\u6807\u7684\u503c\u8fdb\u884c\u5206\u7ec4\u3002<a><\/a><\/p>\n<h2>switch\u548cmatch\u7684\u533a\u522b\u3002<\/p>\n<p>\u5728\u53ef\u4ee5\u4f7f\u7528match\u8868\u8fbe\u5f0f\u7684\u60c5\u51b5\u4e0b\uff0c\u6700\u597d\u5c3d\u53ef\u80fd\u4f7f\u7528match\u8868\u8fbe\u5f0f\u3002\u4e0eswitch\u4e0d\u540c\uff0cmatch\u8868\u8fbe\u5f0f\u8fdb\u884c\u4e86\u4e25\u683c\u7684\u503c\u6bd4\u8f83\uff0c\u56e0\u6b64\u5f88\u5c11\u51fa\u73b0\u9519\u8bef\uff0c\u5e76\u4e14\u53ef\u4ee5\u8fd4\u56de\u503c\uff0c\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n<ul class=\"post-ul\">\nswitch\u3092\u4f7f\u3046\u5834\u5408\n<\/ul>\n<pre class=\"post-pre\"><code><span class=\"nv\">$variable<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'1'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nv\">$result<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">''<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">switch<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$variable<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">case<\/span> <span class=\"mi\">1<\/span><span class=\"o\">:<\/span>\r\n        <span class=\"nv\">$result<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">break<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">case<\/span> <span class=\"mi\">2<\/span><span class=\"o\">:<\/span>\r\n        <span class=\"nv\">$result<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">default<\/span><span class=\"o\">:<\/span>\r\n        <span class=\"k\">break<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$result<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ int(1) \u7de9\u3084\u304b\u306a\u6bd4\u8f03\u306e\u305f\u3081\u578b\u304c\u7570\u306a\u3063\u3066\u3044\u3066\u3082\u30a8\u30e9\u30fc\u3067\u306f\u306a\u3044<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\nmatch\u3092\u4f7f\u3046\u5834\u5408\uff08match\u306f\u5f0f\u306e\u305f\u3081\u5024\u3092\u8fd4\u305b\u308b\uff09\n<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">function<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">(<\/span><span class=\"kt\">string<\/span><span class=\"o\">|<\/span><span class=\"n\">int<\/span> <span class=\"nv\">$variable<\/span><span class=\"p\">):<\/span> <span class=\"kt\">int<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"k\">match<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$variable<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"s1\">'1'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"mi\">1<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"s1\">'2'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"mi\">2<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"k\">default<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"mi\">3<\/span>\r\n    <span class=\"p\">};<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nf\">hoge<\/span><span class=\"p\">(<\/span><span class=\"s1\">'1'<\/span><span class=\"p\">));<\/span> <span class=\"c1\">\/\/ int(1)<\/span>\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nf\">hoge<\/span><span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">));<\/span> <span class=\"c1\">\/\/ int(3) \u53b3\u683c\u306a\u6bd4\u8f03\u306e\u305f\u3081int\u306e\u5834\u5408\u306fdefault\u306b<\/span>\r\n<\/code><\/pre>\n<h2>\u5982\u679c\u5728json_decode\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e2d\u6307\u5b9atrue\uff0c\u5219\u8be5\u503c\u5c06\u88ab\u89e3\u7801\u4e3a\u5173\u8054\u6570\u7ec4\u3002<\/p>\n<p>json_decode\u51fd\u6570\u9ed8\u8ba4\u8fd4\u56de\u5bf9\u8c61\uff08stdClass\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"s1\">'hoge'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">];<\/span>\r\n\r\n<span class=\"nv\">$json<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">json_encode<\/span><span class=\"p\">(<\/span><span class=\"nv\">$arr<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nv\">$decodedValue<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">json_decode<\/span><span class=\"p\">(<\/span><span class=\"nv\">$json<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$decodedValue<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"nf\">object<\/span><span class=\"p\">(<\/span><span class=\"n\">stdClass<\/span><span class=\"p\">)<\/span><span class=\"c1\">#1 (1) {<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"s2\">\"hoge\"<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"fuga\"<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u5c06\u7b2c\u4e8c\u4e2a\u53c2\u6570\u8bbe\u4e3atrue\uff0c\u53ef\u4ee5\u4ee5\u5173\u8054\u6570\u7ec4\u5f62\u5f0f\u63a5\u6536\u6570\u636e\u3002\u867d\u7136\u4e0d\u592a\u5f15\u4eba\u6ce8\u610f\uff0c\u4f46\u4e86\u89e3\u8fd9\u70b9\u4f1a\u5f88\u65b9\u4fbf\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"s1\">'hoge'<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s1\">'fuga'<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">];<\/span>\r\n\r\n<span class=\"nv\">$json<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">json_encode<\/span><span class=\"p\">(<\/span><span class=\"nv\">$arr<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nv\">$decodedValue<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">json_decode<\/span><span class=\"p\">(<\/span><span class=\"nv\">$json<\/span><span class=\"p\">,<\/span> <span class=\"kc\">true<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$decodedValue<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">array<\/span><span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">[<\/span><span class=\"s2\">\"hoge\"<\/span><span class=\"p\">]<\/span><span class=\"o\">=&gt;<\/span>\r\n  <span class=\"nf\">string<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s2\">\"fuga\"<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p><a><\/a><\/p>\n<h2>\u5c3d\u91cf\u5728in_array\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u4e2d\u6307\u5b9a\u4e3atrue\u3002<\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u5c06true\u4f5c\u4e3ain_array\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\u6765\u8fdb\u884c\u4e25\u683c\u6bd4\u8f83\uff0c\u4ee5\u786e\u5b9a\u7b2c\u4e00\u4e2a\u53c2\u6570\u7684\u503c\u662f\u5426\u4e0e\u7b2c\u4e8c\u4e2a\u53c2\u6570\u7684\u6570\u7ec4\u503c\u4e25\u683c\u76f8\u7b49\u3002<\/p>\n<p>\u5728\u6d89\u53ca\u5230switch\u548cmatch\u7684\u8ba8\u8bba\u4e2d\uff0cPHP\u4e2d\u7ecf\u5e38\u51fa\u73b0\u5173\u4e8e\u4e25\u683c\u6bd4\u8f83\uff08\u8003\u8651\u7c7b\u578b\uff09\u548c\u5bbd\u677e\u6bd4\u8f83\u7684\u8bdd\u9898\u3002<\/p>\n<p>\u5c3d\u53ef\u80fd\u4f7f\u7528\u4e25\u683c\u7684\u6bd4\u8f83\u6765\u7f16\u5199\u7c7b\u578b\u5b89\u5168\u7684\u4ee3\u7801\u3002\uff08\u7136\u800c\uff0c\u5728\u65e0\u6cd5\u51c6\u786e\u7406\u89e3\u4f20\u5165\u503c\u7c7b\u578b\u7684\u60c5\u51b5\u4e0b\uff0c\u4e5f\u53ef\u80fd\u4f7f\u7528\u5bbd\u677e\u7684\u6bd4\u8f83\u3002\uff09<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"mi\">2<\/span><span class=\"p\">,<\/span> <span class=\"mi\">3<\/span><span class=\"p\">];<\/span>\r\n\r\n<span class=\"nv\">$value<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'1'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nb\">in_array<\/span><span class=\"p\">(<\/span><span class=\"nv\">$value<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$arr<\/span><span class=\"p\">));<\/span> <span class=\"c1\">\/\/ true<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"nv\">$arr<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"mi\">2<\/span><span class=\"p\">,<\/span> <span class=\"mi\">3<\/span><span class=\"p\">];<\/span>\r\n\r\n<span class=\"nv\">$value<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'1'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nb\">in_array<\/span><span class=\"p\">(<\/span><span class=\"nv\">$value<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$arr<\/span><span class=\"p\">,<\/span> <span class=\"kc\">true<\/span><span class=\"p\">));<\/span> <span class=\"c1\">\/\/ false<\/span>\r\n<\/code><\/pre>\n<p><a><\/a><\/p>\n<h2>\u6307\u5b9a\u8fd4\u56de\u503c\u7684\u7c7b\u578b<\/p>\n<p>\u8bf7\u5728\u51fd\u6570\u7684\u8fd4\u56de\u503c\u4e2d\u6307\u5b9a\u7c7b\u578b\u3002<br \/>\n\u5982\u679c\u8fd4\u56de\u503c\u7684\u7c7b\u578b\u4e0d\u662f\u6307\u5b9a\u7684\u7c7b\u578b\uff0c\u5c06\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n<blockquote><p>\u5728PHP 7.4.0\u53ca\u4ee5\u4e0a\u7248\u672c\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4e3a\u51fd\u6570\u7684\u53c2\u6570\u3001\u8fd4\u56de\u503c\u4ee5\u53ca\u7c7b\u7684\u5c5e\u6027\u58f0\u660e\u7c7b\u578b\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u60a8\u53ef\u4ee5\u786e\u4fdd\u8be5\u503c\u662f\u7279\u5b9a\u7684\u7c7b\u578b\u3002\u5982\u679c\u4e0d\u662f\u8be5\u7c7b\u578b\uff0c\u5219\u4f1a\u629b\u51faTypeError\u9519\u8bef\u3002<br \/>\n\u5f15\u7528\uff1a\u7c7b\u578b\u58f0\u660e<\/p><\/blockquote>\n<pre class=\"post-pre\"><code><span class=\"k\">function<\/span> <span class=\"n\">test<\/span><span class=\"p\">():<\/span> <span class=\"kt\">int<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"s1\">'test'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nv\">$test<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">test<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"nb\">var_dump<\/span><span class=\"p\">(<\/span><span class=\"nv\">$test<\/span><span class=\"p\">);<\/span> <span class=\"c1\">\/\/ PHP Fatal error:  Uncaught TypeError: test(): Return value must be of type int, string returned<\/span>\r\n<\/code><\/pre>\n<h2>\u4f7f\u7528PHP8\u7248\u672c\u4ee5\u4e0a\u7684\u529f\u80fd<\/p>\n<p>\u8ba9\u6211\u4eec\u79ef\u6781\u8fd0\u7528 PHP8\u7cfb\u53ca\u4ee5\u4e0a\u7684\u529f\u80fd\u3002<br \/>\n\u5982\u679c\u7248\u672c\u4f4e\u4e8e8\u7cfb\uff0c\u9700\u8981\u7acb\u5373\u8fdb\u884c\u5347\u7ea7\u3002<\/p>\n<p>\u7279\u306b<\/p>\n<ul class=\"post-ul\">\n\u540d\u524d\u4ed8\u304d\u5f15\u6570<br \/>\n\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u7701\u7565\u8a18\u6cd5<br \/>\n\u30e6\u30cb\u30aa\u30f3\u578b<br \/>\nMatch\u5f0f<br \/>\nNull\u30bb\u30fc\u30d5\u6f14\u7b97\u5b50<br \/>\nEnum<br \/>\nreadonly\u30d7\u30ed\u30d1\u30c6\u30a3<br \/>\nreadonly\u30af\u30e9\u30b9\n<\/ul>\n<p>\u6211\u5f88\u5e38\u4f7f\u7528\u7b49\u7b49\uff0c\u800c\u4e14\u5b83\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n<h2>PHP\u7684\u7ed3\u675f\u6807\u7b7e\u53ef\u4ee5\u7701\u7565\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u7701\u7565\u53ea\u5305\u542bPHP\u4ee3\u7801\u7684\u6587\u4ef6\u7684PHP\u7ed3\u675f\u6807\u7b7e\u3002<\/p>\n<blockquote><p>\u5982\u679c\u6587\u4ef6\u53ea\u5305\u542b PHP \u4ee3\u7801\uff0c\u5efa\u8bae\u7701\u7565\u6587\u4ef6\u7684\u6700\u540e\u7ed3\u675f\u6807\u7b7e\u3002\u5982\u679c\u5728\u7ed3\u675f\u6807\u7b7e\u4e4b\u540e\u6709\u989d\u5916\u7684\u7a7a\u683c\u6216\u6362\u884c\u7b26\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u5916\u884c\u4e3a\u3002\u56e0\u4e3a\u989d\u5916\u7684\u7a7a\u683c\u6216\u6362\u884c\u7b26\u4f1a\u5bfc\u81f4 PHP \u5f00\u59cb\u8f93\u51fa\u7f13\u51b2\uff0c\u65e0\u610f\u4e2d\u8f93\u51fa\u5f53\u524d\u5185\u5bb9\u3002<\/p><\/blockquote>\n<h2>\u603b\u7ed3<\/p>\n<p>\u6211\u8ba4\u4e3a\u5982\u679c\u4f60\u6253\u7b97\u5f00\u59cb\u63a5\u89e6PHP\uff0c\u6700\u597d\u5148\u9605\u8bfb\u4e00\u4e0b\u5b98\u65b9\u6587\u6863\u3002<a><\/a><\/p>\n<p>\u5982\u679c\u65b9\u4fbf\u7684\u8a71\uff0c\u60a8\u53ef\u4ee5\u53c3\u8003\u9019\u88e1\u5217\u51fa\u4e86PHP\u7684\u6700\u4f73\u5be6\u8e10\u3002<a><\/a><\/p>\n<h2>\u6700\u540e<\/p>\n<h4>GoQSystem\u6b63\u5728\u62db\u52df\u4e00\u8d77\u5de5\u4f5c\u7684\u4f19\u4f34\uff01<\/p>\n<p>\u5982\u679c\u60a8\u611f\u5174\u8da3\uff0c\u8bf7\u901a\u8fc7\u4ee5\u4e0b\u94fe\u63a5\u786e\u8ba4\u3002<a><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u9019\u662f\u4e00\u7bc7\u4ecb\u7d39\u5728\u6211\u4f5c\u70ba\u4e8c\u5e74PHP\u7d93\u9a57\u7684\u4eba\u63a5\u89f8PHP\u6642\uff0c\u6211\u8a8d\u70ba\u61c9\u8a72\u77e5\u9053\u548c\u4f7f\u7528\u7684\u4e00\u4e9b\u898f\u7bc4\u548c\u5be6\u7528\u51fd\u6578\u7684\u6587\u7ae0\u3002\uff08\u5982 [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30510","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49\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\/\u5bf9\u4e8ephp\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86php\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5bf9\u4e8ephp\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86php\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-22T21:02:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-12T11:31:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d07b437434c4406bdec3f\/20-0.png\" \/>\n<meta name=\"author\" content=\"\u96c5, \u609f\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u96c5, \u609f\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/\",\"name\":\"\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49 - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2023-09-22T21:02:19+00:00\",\"dateModified\":\"2025-08-12T11:31:18+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/f044a4b7fa4ee2701702942002419ca6\"},\"description\":\"\u5173\u4e8e\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49\u7684\u6280\u672f\u6587\u7ae0\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/zh\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/f044a4b7fa4ee2701702942002419ca6\",\"name\":\"\u96c5, \u609f\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/e71a913e914f1aad1efc391f92084294bac54bc782acd289638580134cf667a6?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/e71a913e914f1aad1efc391f92084294bac54bc782acd289638580134cf667a6?s=96&d=mm&r=g\",\"caption\":\"\u96c5, \u609f\"},\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/author\/yawu\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49 - Blog - Silicon Cloud","description":"\u5173\u4e8e\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49\u7684\u6280\u672f\u6587\u7ae0","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/zh\/blog\/\u5bf9\u4e8ephp\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86php\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\/","og_locale":"zh_CN","og_type":"article","og_title":"\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49","og_description":"\u5173\u4e8e\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49\u7684\u6280\u672f\u6587\u7ae0","og_url":"https:\/\/www.silicloud.com\/zh\/blog\/\u5bf9\u4e8ephp\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86php\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2023-09-22T21:02:19+00:00","article_modified_time":"2025-08-12T11:31:18+00:00","og_image":[{"url":"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d07b437434c4406bdec3f\/20-0.png"}],"author":"\u96c5, \u609f","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"\u96c5, \u609f","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"1 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/","url":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/","name":"\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49 - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website"},"datePublished":"2023-09-22T21:02:19+00:00","dateModified":"2025-08-12T11:31:18+00:00","author":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/f044a4b7fa4ee2701702942002419ca6"},"description":"\u5173\u4e8e\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49\u7684\u6280\u672f\u6587\u7ae0","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/zh\/blog\/"},{"@type":"ListItem","position":2,"name":"\u5bf9\u4e8ePHP\u521d\u5b66\u8005\uff0c\u4ecb\u7ecd\u4e86PHP\u7684\u89c4\u8303\u548c\u4e00\u4e9b\u5b9e\u7528\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5\u7b49"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website","url":"https:\/\/www.silicloud.com\/zh\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/f044a4b7fa4ee2701702942002419ca6","name":"\u96c5, \u609f","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/e71a913e914f1aad1efc391f92084294bac54bc782acd289638580134cf667a6?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/e71a913e914f1aad1efc391f92084294bac54bc782acd289638580134cf667a6?s=96&d=mm&r=g","caption":"\u96c5, \u609f"},"url":"https:\/\/www.silicloud.com\/zh\/blog\/author\/yawu\/"},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%af%b9%e4%ba%8ephp%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%8c%e4%bb%8b%e7%bb%8d%e4%ba%86php%e7%9a%84%e8%a7%84%e8%8c%83%e5%92%8c%e4%b8%80%e4%ba%9b%e5%ae%9e%e7%94%a8%e5%87%bd%e6%95%b0%e7%9a%84%e4%bd%bf\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/30510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/comments?post=30510"}],"version-history":[{"count":2,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/30510\/revisions"}],"predecessor-version":[{"id":111756,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/30510\/revisions\/111756"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/media?parent=30510"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/categories?post=30510"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/tags?post=30510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}