{"id":48316,"date":"2024-12-02T16:24:04","date_gmt":"2024-12-02T08:24:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48316\/"},"modified":"2024-12-02T16:24:04","modified_gmt":"2024-12-02T08:24:04","slug":"php-8-0%e4%b8%ad%e7%9a%84php%e5%87%bd%e6%95%b0%e4%bc%98%e5%8c%96%e6%96%b0%e7%aa%81%e7%a0%b4","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48316\/","title":{"rendered":"PHP 8.0+\u4e2d\u7684PHP\u51fd\u6570\u4f18\u5316\u65b0\u7a81\u7834"},"content":{"rendered":"

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

PHP 8.0+\u4e2d\u7684PHP\u51fd\u6570\u4f18\u5316\u65b0\u7a81\u7834<\/h1>\n

\u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300aPHP 8.0+\u4e2d\u7684PHP\u51fd\u6570\u4f18\u5316\u65b0\u7a81\u7834\u300b<\/span>\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3<\/span>\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

PHP 8.0+ \u5f15\u5165\u4e86\u4ee5\u4e0b\u51fd\u6570\u4f18\u5316\uff1aJIT \u7f16\u8bd1\uff1a\u5c06 PHP \u4ee3\u7801\u7f16\u8bd1\u4e3a\u673a\u5668\u4ee3\u7801\uff0c\u63d0\u9ad8\u6267\u884c\u901f\u5ea6\u3002\u9884\u52a0\u8f7d\u51fd\u6570\uff1a\u5728\u811a\u672c\u6267\u884c\u524d\u52a0\u8f7d\u5e38\u7528\u51fd\u6570\uff0c\u51cf\u5c11\u52a0\u8f7d\u65f6\u95f4\u3002\u53c2\u6570\u7c7b\u578b\u58f0\u660e\uff1a\u6307\u5b9a\u53d8\u91cf\u7c7b\u578b\uff0c\u63d0\u9ad8\u6548\u7387\u548c\u9519\u8bef\u5904\u7406\u3002<\/p>\n

\"PHP<\/p>\n

PHP 8.0+\u4e2d\u7684PHP\u51fd\u6570\u4f18\u5316\u65b0\u7a81\u7834<\/strong><\/p>\n

PHP 8.0 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u5f15\u5165\u4e86\u5bf9 PHP \u51fd\u6570\u6027\u80fd\u7684\u91cd\u5927\u4f18\u5316\uff0c\u63d0\u9ad8\u4e86\u4ee3\u7801\u6267\u884c\u901f\u5ea6\u5e76\u589e\u5f3a\u4e86\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u3002<\/p>\n

JIT \u7f16\u8bd1<\/strong><\/p>\n

Just-In-Time\uff08JIT\uff09\u7f16\u8bd1\u5668\u662f\u4e00\u9879\u7a81\u7834\u6027\u529f\u80fd\uff0c\u5b83\u5c06 PHP \u4ee3\u7801\u7f16\u8bd1\u4e3a\u9488\u5bf9\u7279\u5b9a\u673a\u5668\u67b6\u6784\u7684\u539f\u751f\u673a\u5668\u4ee3\u7801\u3002\u8fd9\u6d88\u9664\u4e86\u4f20\u7edf\u89e3\u91ca\u5668\u6267\u884c\u65f6\u7684\u989d\u5916\u5f00\u9500\uff0c\u4ece\u800c\u5927\u5e45\u63d0\u9ad8\u4e86\u51fd\u6570\u6267\u884c\u7684\u901f\u5ea6\u3002<\/p>\n

\u9884\u52a0\u8f7d\u51fd\u6570<\/strong><\/p>\n

PHP 8.0 \u5f15\u5165\u4e86\u9884\u52a0\u8f7d\u529f\u80fd\uff0c\u5141\u8bb8\u5728\u811a\u672c\u6267\u884c\u4e4b\u524d\u52a0\u8f7d\u548c\u7f13\u5b58\u5e38\u7528\u51fd\u6570\u3002\u8fd9\u51cf\u5c11\u4e86\u5728\u811a\u672c\u8fd0\u884c\u65f6\u67e5\u627e\u548c\u52a0\u8f7d\u51fd\u6570\u7684\u65f6\u95f4\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u6574\u4f53\u6027\u80fd\u3002<\/p>\n

\u53c2\u6570\u7c7b\u578b\u58f0\u660e<\/strong><\/p>\n

PHP 8.0 \u53ca\u66f4\u9ad8\u7248\u672c\u652f\u6301\u53c2\u6570\u7c7b\u578b\u58f0\u660e\uff0c\u5141\u8bb8\u6307\u5b9a\u4f20\u5165\u51fd\u6570\u7684\u53d8\u91cf\u7c7b\u578b\u3002\u8fd9\u4f7f PHP \u80fd\u591f\u6267\u884c\u7c7b\u578b\u68c0\u67e5\u5e76\u63d0\u4f9b\u66f4\u597d\u7684\u9519\u8bef\u5904\u7406\uff0c\u8fdb\u4e00\u6b65\u63d0\u9ad8\u4e86\u51fd\u6570\u7684\u6548\u7387\u3002<\/p>\n

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

\u4e3a\u4e86\u5c55\u793a\u8fd9\u4e9b\u4f18\u5316\u7684\u5f71\u54cd\uff0c\u6211\u4eec\u63d0\u4f9b\u4e00\u4e2a\u6bd4\u8f83\u793a\u4f8b\uff1a<\/p>\n

\/\/ PHP 7.4\n\nfunction sum($a, $b) {\n  return $a + $b;\n}\n<\/pre>\n
\/\/ PHP 8.0+\n\nfunction sum(int $a, int $b): int {\n  return $a + $b;\n}<\/pre>\n
\u5728 PHP 8.0+ \u4e2d\uff0c\u7c7b\u578b\u58f0\u660e\u4fe1\u606f\u7528\u4e8e\u4f18\u5316\u4ee3\u7801\uff0c\u63d0\u4f9b\u66f4\u5feb\u7684\u6267\u884c\u901f\u5ea6\u548c\u66f4\u597d\u7684\u9519\u8bef\u68c0\u6d4b\u3002<\/p>\n
\u901a\u8fc7\u5229\u7528 PHP 8.0 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u63d0\u4f9b\u7684\u8fd9\u4e9b\u51fd\u6570\u4f18\u5316\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u5176\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u5e76\u4eab\u53d7\u6d41\u7545\u7684\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300aPHP 8.0+\u4e2d\u7684PHP\u51fd\u6570\u4f18\u5316\u65b0\u7a81\u7834\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP 8.0+\u4e2d\u7684PHP\u51fd\u6570\u4f18\u5316\u65b0\u7a81\u7834 \u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300aPHP 8.0+\u4e2d\u7684PHP\u51fd\u6570\u4f18\u5316\u65b0\u7a81\u7834\u300b\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01 PHP 8.0+ \u5f15\u5165\u4e86\u4ee5\u4e0b\u51fd\u6570\u4f18\u5316\uff1aJIT \u7f16\u8bd1\uff1a\u5c06 PHP \u4ee3\u7801\u7f16\u8bd1\u4e3a\u673a\u5668\u4ee3\u7801\uff0c\u63d0\u9ad8\u6267\u884c\u901f\u5ea6\u3002\u9884\u52a0\u8f7d\u51fd\u6570\uff1a\u5728\u811a\u672c\u6267\u884c\u524d\u52a0\u8f7d\u5e38\u7528\u51fd\u6570\uff0c\u51cf\u5c11\u52a0\u8f7d\u65f6\u95f4\u3002\u53c2\u6570\u7c7b\u578b\u58f0\u660e\uff1a\u6307\u5b9a\u53d8\u91cf\u7c7b\u578b\uff0c\u63d0\u9ad8\u6548\u7387\u548c\u9519\u8bef\u5904\u7406\u3002 PHP 8.0+\u4e2d\u7684PHP\u51fd\u6570\u4f18\u5316\u65b0\u7a81\u7834 PHP 8.0 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u5f15\u5165\u4e86\u5bf9 PHP \u51fd\u6570\u6027\u80fd\u7684\u91cd\u5927\u4f18\u5316\uff0c\u63d0\u9ad8\u4e86\u4ee3\u7801\u6267\u884c\u901f\u5ea6\u5e76\u589e\u5f3a\u4e86\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u3002 JIT \u7f16\u8bd1 Just-In-Time\uff08JIT\uff09\u7f16\u8bd1\u5668\u662f\u4e00\u9879\u7a81\u7834\u6027\u529f\u80fd\uff0c\u5b83\u5c06 PHP \u4ee3\u7801\u7f16\u8bd1\u4e3a\u9488\u5bf9\u7279\u5b9a\u673a\u5668\u67b6\u6784\u7684\u539f\u751f\u673a\u5668\u4ee3\u7801\u3002\u8fd9\u6d88\u9664\u4e86\u4f20\u7edf\u89e3\u91ca\u5668\u6267\u884c\u65f6\u7684\u989d\u5916\u5f00\u9500\uff0c\u4ece\u800c\u5927\u5e45\u63d0\u9ad8\u4e86\u51fd\u6570\u6267\u884c\u7684\u901f\u5ea6\u3002 \u9884\u52a0\u8f7d\u51fd\u6570 PHP 8.0 \u5f15\u5165\u4e86\u9884\u52a0\u8f7d\u529f\u80fd\uff0c\u5141\u8bb8\u5728\u811a\u672c\u6267\u884c\u4e4b\u524d\u52a0\u8f7d\u548c\u7f13\u5b58\u5e38\u7528\u51fd\u6570\u3002\u8fd9\u51cf\u5c11\u4e86\u5728\u811a\u672c\u8fd0\u884c\u65f6\u67e5\u627e\u548c\u52a0\u8f7d\u51fd\u6570\u7684\u65f6\u95f4\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u6574\u4f53\u6027\u80fd\u3002 \u53c2\u6570\u7c7b\u578b\u58f0\u660e PHP 8.0 \u53ca\u66f4\u9ad8\u7248\u672c\u652f\u6301\u53c2\u6570\u7c7b\u578b\u58f0\u660e\uff0c\u5141\u8bb8\u6307\u5b9a\u4f20\u5165\u51fd\u6570\u7684\u53d8\u91cf\u7c7b\u578b\u3002\u8fd9\u4f7f PHP \u80fd\u591f\u6267\u884c\u7c7b\u578b\u68c0\u67e5\u5e76\u63d0\u4f9b\u66f4\u597d\u7684\u9519\u8bef\u5904\u7406\uff0c\u8fdb\u4e00\u6b65\u63d0\u9ad8\u4e86\u51fd\u6570\u7684\u6548\u7387\u3002 \u5b9e\u6218\u6848\u4f8b \u4e3a\u4e86\u5c55\u793a\u8fd9\u4e9b\u4f18\u5316\u7684\u5f71\u54cd\uff0c\u6211\u4eec\u63d0\u4f9b\u4e00\u4e2a\u6bd4\u8f83\u793a\u4f8b\uff1a \/\/ PHP 7.4 function sum($a, $b) { return $a + $b; } \/\/ PHP 8.0+ function sum(int $a, int $b): int […]<\/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-48316","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48316","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=48316"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48316\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=48316"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=48316"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=48316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}