{"id":202485,"date":"2025-05-13T11:23:52","date_gmt":"2025-05-13T03:23:52","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202485\/"},"modified":"2025-05-13T11:23:52","modified_gmt":"2025-05-13T03:23:52","slug":"php%e5%87%bd%e6%95%b0%e7%ae%97%e6%b3%95%e4%bc%98%e5%8c%96%e6%8a%80%e5%b7%a7%ef%bc%9a%e4%bb%8e%e5%a4%8d%e6%9d%82%e5%ba%a6%e5%88%86%e6%9e%90%e5%88%b0%e4%bb%a3%e7%a0%81%e5%ae%9e%e6%96%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202485\/","title":{"rendered":"php\u51fd\u6570\u7b97\u6cd5\u4f18\u5316\u6280\u5de7\uff1a\u4ece\u590d\u6742\u5ea6\u5206\u6790\u5230\u4ee3\u7801\u5b9e\u65bd"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>php\u51fd\u6570\u7b97\u6cd5\u4f18\u5316\u6280\u5de7\uff1a\u4ece\u590d\u6742\u5ea6\u5206\u6790\u5230\u4ee3\u7801\u5b9e\u65bd<\/h1>\n<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aphp\u51fd\u6570\u7b97\u6cd5\u4f18\u5316\u6280\u5de7\uff1a\u4ece\u590d\u6742\u5ea6\u5206\u6790\u5230\u4ee3\u7801\u5b9e\u65bd\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n<p>PHP \u51fd\u6570\u7b97\u6cd5\u4f18\u5316\u6db5\u76d6\u590d\u6742\u5ea6\u5206\u6790\u548c\u4ee3\u7801\u4f18\u5316\u6280\u5de7\u3002\u590d\u6742\u5ea6\u8bc4\u4f30\u6709\u52a9\u4e8e\u8bc6\u522b\u6548\u7387\u74f6\u9888\uff0c\u5305\u62ec\u65f6\u95f4\u548c\u7a7a\u95f4\u590d\u6742\u5ea6\u3002\u4ee3\u7801\u4f18\u5316\u6280\u5de7\u5305\u62ec\uff1a1. \u4f7f\u7528\u6570\u636e\u7ed3\u6784\u4f18\u5316\uff1b2. \u4f18\u5316\u5faa\u73af\uff1b3. \u907f\u514d\u4e0d\u5fc5\u8981\u7684\u51fd\u6570\u8c03\u7528\uff1b4. \u4f7f\u7528 JIT \u7f16\u8bd1\u5668\uff1b5. \u542f\u7528 Opcache\u3002\u901a\u8fc7\u5e94\u7528\u8fd9\u4e9b\u6280\u5de7\uff0c\u53ef\u4ee5\u63d0\u5347 PHP \u51fd\u6570\u7684\u6548\u7387\uff0c\u8fdb\u800c\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241025\/1729838611671b3e1364bb8.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>PHP \u51fd\u6570\u7b97\u6cd5\u4f18\u5316\u6280\u5de7\uff1a\u4ece\u590d\u6742\u5ea6\u5206\u6790\u5230\u4ee3\u7801\u5b9e\u65bd<\/strong><\/p>\n<p><strong>\u5bfc\u8a00<\/strong><\/p>\n<p>PHP \u51fd\u6570\u7684\u6027\u80fd\u4f18\u5316\u81f3\u5173\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u5f71\u54cd\u5e94\u7528\u7a0b\u5e8f\u7684\u54cd\u5e94\u65f6\u95f4\u548c\u541e\u5410\u91cf\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5404\u79cd\u7b97\u6cd5\u4f18\u5316\u6280\u5de7\uff0c\u4ece\u590d\u6742\u5ea6\u5206\u6790\u5230\u4ee3\u7801\u5b9e\u65bd\uff0c\u5e2e\u52a9\u4f60\u63d0\u5347 PHP \u51fd\u6570\u7684\u6548\u7387\u3002<\/p>\n<p><strong>\u590d\u6742\u5ea6\u5206\u6790<\/strong><\/p>\n<p>\u590d\u6742\u5ea6\u5206\u6790\u662f\u786e\u5b9a\u51fd\u6570\u8fd0\u884c\u65f6\u95f4\u6240\u9700\u8ba1\u7b97\u8d44\u6e90\u6570\u91cf\u7684\u8fc7\u7a0b\u3002\u5e38\u7528\u7684\u590d\u6742\u5ea6\u5ea6\u91cf\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u65f6\u95f4\u590d\u6742\u5ea6\uff1a<\/strong>\u8bc4\u4f30\u7b97\u6cd5\u5728\u5404\u79cd\u8f93\u5165\u89c4\u6a21\u4e0b\u7684\u8fd0\u884c\u65f6\u95f4\u3002<\/li>\n<li><strong>\u7a7a\u95f4\u590d\u6742\u5ea6\uff1a<\/strong>\u6d4b\u91cf\u7b97\u6cd5\u5728\u8fd0\u884c\u65f6\u5360\u7528\u7684\u5185\u5b58\u91cf\u3002<\/li>\n<\/ul>\n<p>\u4e86\u89e3\u7b97\u6cd5\u7684\u590d\u6742\u5ea6\u6709\u52a9\u4e8e\u8bc6\u522b\u6548\u7387\u74f6\u9888\u5e76\u5236\u5b9a\u4f18\u5316\u7b56\u7565\u3002<\/p>\n<p><strong>\u4ee3\u7801\u4f18\u5316\u6280\u5de7<\/strong><\/p>\n<p><strong>1. \u4f7f\u7528\u6570\u636e\u7ed3\u6784\u4f18\u5316<\/strong><\/p>\n<p>\u4f7f\u7528\u54c8\u5e0c\u8868\u3001\u6570\u7ec4\u6216\u94fe\u8868\u7b49\u5408\u9002\u7684\u6570\u636e\u7ed3\u6784\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u67e5\u627e\u6216\u63d2\u5165\u64cd\u4f5c\u7684\u6548\u7387\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a\u4f7f\u7528\u54c8\u5e0c\u8868\u67e5\u627e\u5b57\u7b26\u4e32<\/strong><\/p>\n<pre>$names = [\"John\", \"Jane\", \"Mary\"];\n\n\/\/ \u4f7f\u7528\u54c8\u5e0c\u8868\u5b58\u50a8\u540d\u79f0\u548c\u7d22\u5f15\n$hashtable = [];\nforeach ($names as $index =&gt; $name) {\n    $hashtable[$name] = $index;\n}\n\n\/\/ \u901a\u8fc7\u54c8\u5e0c\u8868\u67e5\u627e\u662f\u5426\u5b58\u5728 \"Mary\"\nif (isset($hashtable[\"Mary\"])) {\n    echo \"Mary found at index {$hashtable[\"Mary\"]}\";\n}<\/pre>\n<p><strong>2. \u4f18\u5316\u5faa\u73af<\/strong><\/p>\n<p>\u901a\u8fc7\u4ee5\u4e0b\u6280\u672f\u4f18\u5316\u5faa\u73af\u53ef\u4ee5\u51cf\u5c11\u8fed\u4ee3\u6b21\u6570\u5e76\u63d0\u9ad8\u6027\u80fd\uff1a<\/p>\n<ul>\n<li><strong>\u8df3\u8fc7\u4e0d\u5fc5\u8981\u7684\u8fed\u4ee3\uff1a<\/strong>\u4f7f\u7528 <code>break<\/code> \u6216 <code>continue<\/code> \u8bed\u53e5\u9000\u51fa\u5faa\u73af\u3002<\/li>\n<li><strong>\u4f7f\u7528 <code>foreach<\/code> \u800c\u4e0d\u662f <code>for<\/code> \u5faa\u73af\uff1a<\/strong>\u5f53\u4f7f\u7528\u5173\u8054\u6570\u7ec4\u6216\u5bf9\u8c61\u65f6\uff0c<code>foreach<\/code> \u66f4\u9ad8\u6548\u3002<\/li>\n<li><strong>\u9884\u7f13\u5b58\u5faa\u73af\u53d8\u91cf\uff1a<\/strong>\u901a\u8fc7\u9884\u5148\u5b58\u50a8\u5faa\u73af\u53d8\u91cf\uff0c\u53ef\u4ee5\u907f\u514d\u591a\u6b21\u8ba1\u7b97\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a\u4f7f\u7528 <code>break<\/code> \u9000\u51fa\u5faa\u73af<\/strong><\/p>\n<pre>for ($i = 0; $i &lt; 100; $i++) {\n    if ($i &gt; 50) {\n        break;\n    }\n    \/\/ \u6267\u884c\u5176\u4ed6\u64cd\u4f5c...\n}<\/pre>\n<p><strong>3. \u907f\u514d\u4e0d\u5fc5\u8981\u7684\u51fd\u6570\u8c03\u7528<\/strong><\/p>\n<p>\u51fd\u6570\u8c03\u7528\u5177\u6709\u5f00\u9500\uff0c\u91cd\u590d\u8c03\u7528\u540c\u4e00\u51fd\u6570\u4f1a\u964d\u4f4e\u6548\u7387\u3002\u5c3d\u53ef\u80fd\u5730\u7f13\u5b58\u51fd\u6570\u8c03\u7528\u7ed3\u679c\u6216\u4f7f\u7528\u672c\u5730\u53d8\u91cf\u3002<\/p>\n<p><strong>\u793a\u4f8b\uff1a\u7f13\u5b58 <code>count()<\/code> \u8c03\u7528<\/strong><\/p>\n<pre>$array = [1, 2, 3, 4, 5];\n\n\/\/ \u7f13\u5b58\u6570\u7ec4\u957f\u5ea6\n$arrayCount = count($array);\n\nfor ($i = 0; $i &lt; $arrayCount; $i++) {\n    \/\/ \u907f\u514d\u91cd\u590d\u8c03\u7528 `count()`\n    echo $array[$i];\n}<\/pre>\n<p><strong>4. \u4f7f\u7528 JIT \u7f16\u8bd1\u5668<\/strong><\/p>\n<p>PHP 8+ \u5f15\u5165\u4e86 JIT\uff08\u5373\u65f6\u7f16\u8bd1\u5668\uff09\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06 PHP \u4ee3\u7801\u7f16\u8bd1\u4e3a\u673a\u5668\u7801\u6765\u63d0\u9ad8\u6027\u80fd\u3002\u867d\u7136 JIT \u7f16\u8bd1\u5668\u63d0\u4f9b\u663e\u7740\u7684\u901f\u5ea6\u63d0\u5347\uff0c\u4f46\u5b83\u4e5f\u53ef\u80fd\u589e\u52a0\u5185\u5b58\u4f7f\u7528\u91cf\u3002<\/p>\n<p><strong>5. \u542f\u7528 Opcache<\/strong><\/p>\n<p>Opcache\u662f\u4e00\u4e2a PHP \u6269\u5c55\uff0c\u5b83\u7f13\u5b58\u7f16\u8bd1\u540e\u7684\u4ee3\u7801\uff0c\u4ece\u800c\u907f\u514d\u6bcf\u6b21\u8bf7\u6c42\u90fd\u91cd\u65b0\u7f16\u8bd1\u5b83\u3002\u8fd9\u53ef\u4ee5\u663e\u7740\u63d0\u9ad8\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u5927\u91cf PHP \u4ee3\u7801\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u901a\u8fc7\u5e94\u7528\u8fd9\u4e9b\u7b97\u6cd5\u4f18\u5316\u6280\u5de7\uff0c\u4f60\u53ef\u4ee5\u63d0\u5347 PHP \u51fd\u6570\u7684\u6548\u7387\uff0c\u4f18\u5316\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002\u4ece\u590d\u6742\u5ea6\u5206\u6790\u5230\u4ee3\u7801\u5b9e\u65bd\uff0c\u8fd9\u4e9b\u6280\u672f\u63d0\u4f9b\u4e86\u660e\u786e\u800c\u5b9e\u9645\u7684\u65b9\u6cd5\u6765\u63d0\u9ad8\u4ee3\u7801\u7684\u901f\u5ea6\u548c\u54cd\u5e94\u80fd\u529b\u3002<\/p>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"<p>php\u51fd\u6570\u7b97\u6cd5\u4f18\u5316\u6280\u5de7\uff1a\u4ece\u590d\u6742\u5ea6&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202485","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202485"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202485\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}