{"id":48290,"date":"2024-12-02T08:24:36","date_gmt":"2024-12-02T00:24:36","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48290\/"},"modified":"2024-12-02T08:24:36","modified_gmt":"2024-12-02T00:24:36","slug":"php-%e5%a0%86%e6%a0%88%e6%ba%a2%e5%87%ba%e7%9a%84%e6%9c%aa%e6%9d%a5%e5%8f%91%e5%b1%95%e8%b6%8b%e5%8a%bf","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48290\/","title":{"rendered":"PHP \u5806\u6808\u6ea2\u51fa\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf"},"content":{"rendered":"

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

PHP \u5806\u6808\u6ea2\u51fa\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf<\/h1>\n

\u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u300aPHP \u5806\u6808\u6ea2\u51fa\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf\u300b<\/span>\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u6216\u8005\u662f\u5bf9\u6587\u7ae0<\/span>\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01<\/p>\n

PHP\u5806\u6808\u6ea2\u51fa\u662f\u4e00\u79cd\u8fd0\u884c\u65f6\u9519\u8bef\uff0c\u672a\u6765PHP\u5c06\u901a\u8fc7\u4f18\u5316\u4ee5\u4e0b\u65b9\u9762\u6765\u89e3\u51b3\uff1a\u4f18\u5316JIT\u7f16\u8bd1\u5668\uff0c\u63d0\u9ad8\u68c0\u6d4b\u548c\u9632\u6b62\u5806\u6808\u6ea2\u51fa\u7684\u80fd\u529b\uff1b\u5f15\u5165\u52a8\u6001\u5806\u6808\u5206\u914d\uff0c\u52a8\u6001\u8c03\u6574\u5806\u6808\u5927\u5c0f\uff1b\u6539\u5584\u9519\u8bef\u5904\u7406\u673a\u5236\uff0c\u66f4\u6613\u4e8e\u68c0\u6d4b\u548c\u5904\u7406\u5806\u6808\u6ea2\u51fa\u3002<\/p>\n

\"PHP<\/p>\n

PHP \u5806\u6808\u6ea2\u51fa\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf<\/strong><\/p>\n

\u5806\u6808\u6ea2\u51fa\u662f\u4e00\u79cd\u5f53\u51fd\u6570\u8c03\u7528\u6df1\u5ea6\u8fbe\u5230\u64cd\u4f5c\u7cfb\u7edf\u6216\u865a\u62df\u673a (VM) \u5141\u8bb8\u7684\u6700\u5927\u9650\u5236\u65f6\u53d1\u751f\u7684\u8fd0\u884c\u65f6\u9519\u8bef\u3002\u5728 PHP \u4e2d\uff0c\u6700\u5e38\u89c1\u7684\u5806\u6808\u6ea2\u51fa\u539f\u56e0\u662f\u65e0\u9650\u9012\u5f52\u6216\u5faa\u73af\u3002<\/p>\n

\u672a\u6765\u8d8b\u52bf<\/strong><\/p>\n

1. \u4f18\u5316 JIT \u7f16\u8bd1\u5668<\/strong><\/p>\n

PHP 8 \u7684 JIT \u7f16\u8bd1\u5668\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u5806\u6808\u6ea2\u51fa\u7684\u9891\u7387\u3002\u672a\u6765\u7684\u7248\u672c\u5c06\u8fdb\u4e00\u6b65\u4f18\u5316\u7f16\u8bd1\u5668\uff0c\u63d0\u9ad8\u5176\u68c0\u6d4b\u548c\u9632\u6b62\u5806\u6808\u6ea2\u51fa\u7684\u80fd\u529b\u3002<\/p>\n

2. \u52a8\u6001\u5806\u6808\u5206\u914d<\/strong><\/p>\n

\u672a\u6765\u7248\u672c\u8fd8\u53ef\u80fd\u5f15\u5165\u52a8\u6001\u5806\u6808\u5206\u914d\uff0c\u5141\u8bb8\u5728\u9700\u8981\u65f6\u52a8\u6001\u8c03\u6574\u5806\u6808\u5927\u5c0f\u3002\u8fd9\u5c06\u6709\u52a9\u4e8e\u9632\u6b62\u5728\u4e0d\u9700\u8981\u65f6\u5206\u914d\u8fc7\u591a\u5806\u6808\u7a7a\u95f4\u3002<\/p>\n

3. \u66f4\u597d\u7684\u9519\u8bef\u5904\u7406<\/strong><\/p>\n

PHP \u7684\u9519\u8bef\u5904\u7406\u673a\u5236\u5c06\u5728\u672a\u6765\u5f97\u5230\u6539\u8fdb\uff0c\u4ee5\u4fbf\u66f4\u6613\u4e8e\u68c0\u6d4b\u548c\u5904\u7406\u5806\u6808\u6ea2\u51fa\u3002\u8fd9\u5c06\u6709\u52a9\u4e8e\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u9c81\u68d2\u6027\u3002<\/p>\n

\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n

\u4ee5\u4e0b\u4ee3\u7801\u7247\u6bb5\u4f1a\u5bfc\u81f4\u5806\u6808\u6ea2\u51fa\uff1a<\/p>\n

function factorial($n) {\n  if ($n == 0) {\n    return 1;\n  } else {\n    return $n * factorial($n - 1);\n  }\n}\n\necho factorial(10000);<\/pre>\n
\u5728 PHP 8 \u4e2d\uff0c\u6b64\u4ee3\u7801\u5c06\u89e6\u53d1\u4ee5\u4e0b\u9519\u8bef\uff1a<\/p>\n
Fatal error: Maximum function nesting level of '256' reached, aborting!<\/pre>\n
\u5728\u672a\u6765\u7684 PHP \u7248\u672c\u4e2d\uff0c\u6b64\u9519\u8bef\u53ef\u80fd\u4f1a\u5f97\u5230\u66f4\u8be6\u7ec6\u548c\u53ef\u64cd\u4f5c\u7684\u4fe1\u606f\u3002<\/p>\n
\u7ed3\u8bba<\/strong><\/p>\n
PHP \u5806\u6808\u6ea2\u51fa\u9519\u8bef\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u6311\u6218\uff0c\u4f46\u672a\u6765\u7248\u672c\u7684 PHP \u9884\u8ba1\u5c06\u901a\u8fc7\u4f18\u5316 JIT \u7f16\u8bd1\u5668\u3001\u52a8\u6001\u5806\u6808\u5206\u914d\u548c\u6539\u8fdb\u7684\u9519\u8bef\u5904\u7406\u6765\u89e3\u51b3\u6b64\u95ee\u9898\u3002\u8fd9\u4e9b\u8fdb\u6b65\u5c06\u63d0\u5347 PHP \u5e94\u7528\u7a0b\u5e8f\u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n
\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aPHP \u5806\u6808\u6ea2\u51fa\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8ephp,\u5806\u6808\u6ea2\u51fa\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP \u5806\u6808\u6ea2\u51fa\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf \u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u300aPHP \u5806\u6808\u6ea2\u51fa\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf\u300b\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6587\u7ae0\uff0c\u6216\u8005\u662f\u5bf9\u6587\u7ae0\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01 PHP\u5806\u6808\u6ea2\u51fa\u662f\u4e00\u79cd\u8fd0\u884c\u65f6\u9519\u8bef\uff0c\u672a\u6765PHP\u5c06\u901a\u8fc7\u4f18\u5316\u4ee5\u4e0b\u65b9\u9762\u6765\u89e3\u51b3\uff1a\u4f18\u5316JIT\u7f16\u8bd1\u5668\uff0c\u63d0\u9ad8\u68c0\u6d4b\u548c\u9632\u6b62\u5806\u6808\u6ea2\u51fa\u7684\u80fd\u529b\uff1b\u5f15\u5165\u52a8\u6001\u5806\u6808\u5206\u914d\uff0c\u52a8\u6001\u8c03\u6574\u5806\u6808\u5927\u5c0f\uff1b\u6539\u5584\u9519\u8bef\u5904\u7406\u673a\u5236\uff0c\u66f4\u6613\u4e8e\u68c0\u6d4b\u548c\u5904\u7406\u5806\u6808\u6ea2\u51fa\u3002 PHP \u5806\u6808\u6ea2\u51fa\u7684\u672a\u6765\u53d1\u5c55\u8d8b\u52bf \u5806\u6808\u6ea2\u51fa\u662f\u4e00\u79cd\u5f53\u51fd\u6570\u8c03\u7528\u6df1\u5ea6\u8fbe\u5230\u64cd\u4f5c\u7cfb\u7edf\u6216\u865a\u62df\u673a (VM) \u5141\u8bb8\u7684\u6700\u5927\u9650\u5236\u65f6\u53d1\u751f\u7684\u8fd0\u884c\u65f6\u9519\u8bef\u3002\u5728 PHP \u4e2d\uff0c\u6700\u5e38\u89c1\u7684\u5806\u6808\u6ea2\u51fa\u539f\u56e0\u662f\u65e0\u9650\u9012\u5f52\u6216\u5faa\u73af\u3002 \u672a\u6765\u8d8b\u52bf 1. \u4f18\u5316 JIT \u7f16\u8bd1\u5668 PHP 8 \u7684 JIT \u7f16\u8bd1\u5668\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u5806\u6808\u6ea2\u51fa\u7684\u9891\u7387\u3002\u672a\u6765\u7684\u7248\u672c\u5c06\u8fdb\u4e00\u6b65\u4f18\u5316\u7f16\u8bd1\u5668\uff0c\u63d0\u9ad8\u5176\u68c0\u6d4b\u548c\u9632\u6b62\u5806\u6808\u6ea2\u51fa\u7684\u80fd\u529b\u3002 2. \u52a8\u6001\u5806\u6808\u5206\u914d \u672a\u6765\u7248\u672c\u8fd8\u53ef\u80fd\u5f15\u5165\u52a8\u6001\u5806\u6808\u5206\u914d\uff0c\u5141\u8bb8\u5728\u9700\u8981\u65f6\u52a8\u6001\u8c03\u6574\u5806\u6808\u5927\u5c0f\u3002\u8fd9\u5c06\u6709\u52a9\u4e8e\u9632\u6b62\u5728\u4e0d\u9700\u8981\u65f6\u5206\u914d\u8fc7\u591a\u5806\u6808\u7a7a\u95f4\u3002 3. \u66f4\u597d\u7684\u9519\u8bef\u5904\u7406 PHP \u7684\u9519\u8bef\u5904\u7406\u673a\u5236\u5c06\u5728\u672a\u6765\u5f97\u5230\u6539\u8fdb\uff0c\u4ee5\u4fbf\u66f4\u6613\u4e8e\u68c0\u6d4b\u548c\u5904\u7406\u5806\u6808\u6ea2\u51fa\u3002\u8fd9\u5c06\u6709\u52a9\u4e8e\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u9c81\u68d2\u6027\u3002 \u5b9e\u6218\u6848\u4f8b \u4ee5\u4e0b\u4ee3\u7801\u7247\u6bb5\u4f1a\u5bfc\u81f4\u5806\u6808\u6ea2\u51fa\uff1a function factorial($n) { if ($n == 0) { return 1; } else { return $n * factorial($n – 1); } } echo factorial(10000); \u5728 […]<\/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-48290","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48290","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=48290"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48290\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=48290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=48290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=48290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}