{"id":8128,"date":"2024-04-22T17:01:01","date_gmt":"2024-04-22T09:01:01","guid":{"rendered":""},"modified":"2024-04-22T17:01:01","modified_gmt":"2024-04-22T09:01:01","slug":"\u3010PHP\u3011PHP 8.1 \u7684\u65b0\u7279\u6027\u4e00\u89c8 | \u4ea4\u53c9\u7c7b\u578b\u3001\u679a\u4e3e\u3001never \u8fd4\u56de\u7c7b\u578b\u3001Fibers \u7ea4\u7a0b\u3001readonly \u53ea\u8bfb\u5c5e\u6027","status":"publish","type":"post","link":"https:\/\/mushiming.com\/8128.html","title":{"rendered":"\u3010PHP\u3011PHP 8.1 \u7684\u65b0\u7279\u6027\u4e00\u89c8 | \u4ea4\u53c9\u7c7b\u578b\u3001\u679a\u4e3e\u3001never \u8fd4\u56de\u7c7b\u578b\u3001Fibers \u7ea4\u7a0b\u3001readonly \u53ea\u8bfb\u5c5e\u6027"},"content":{"rendered":"<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"display: none;\"> \n <path stroke-linecap=\"round\" d=\"M5,0 0,2.5 5,5z\" id=\"raphael-marker-block\" style=\"-webkit-tap-highlight-color: rgba(0, 0, 0, 0);\"><\/path> \n<\/svg> <\/p>\n<div class=\"toc\">\n<h4>\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>\u4e00\u3001\u524d\u8a00<\/li>\n<li>\u4e8c\u3001PHP 8.1 \u65b0\u7279\u6027<\/li>\n<li>\n<ul>\n<li>\u7eaf\u4ea4\u53c9\u7c7b\u578b Pure Intersection Types<\/li>\n<li>\u679a\u4e3e Enums<\/li>\n<li>`never` \u8fd4\u56de\u7c7b\u578b<\/li>\n<li>Fibers \u7ea4\u7a0b<\/li>\n<li>readonly \u53ea\u8bfb\u5c5e\u6027<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001\u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<h3>\u4e00\u3001\u524d\u8a00<\/h3>\n<p>PHP 8.1 \u53d1\u5e03\u4e8e2021 \u5e74 11 \u6708 25 \u65e5\uff0c\u6700\u8fd1\u4e00\u6b21\u66f4\u65b0\u57282022 \u5e74 9 \u6708 29 \u65e5\uff0c\u6211\u4eec\u8fd9\u6b21\u4ecb\u7ecd\u4e00\u4e0b\u8fd9\u4e2a\u7248\u672c\u7684\u65b0\u7279\u6027\u3002<\/p>\n<p>\u5982\u679c\u4f60\u7684\u9879\u76ee\u6b63\u5728\u4f7f\u7528 8.1 \u7248\u672c\uff0c\u8bf7\u4f60\u8981\u6ce8\u610f\u8fd9\u4e9b\u5e76\u4e14\u52a0\u4ee5\u8fd0\u7528\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/mushiming_com\/cf78238418eb4a6f979795c785718ac1.png\" =\"\" =\"\" alt=\"\u3010PHP\u3011PHP 8.1 \u7684\u65b0\u7279\u6027\u4e00\u89c8 | \u4ea4\u53c9\u7c7b\u578b\u3001\u679a\u4e3e\u3001never \u8fd4\u56de\u7c7b\u578b\u3001Fibers \u7ea4\u7a0b\u3001readonly \u53ea\u8bfb\u5c5e\u6027 (https:\/\/mushiming.com\/)  \u7b2c1\u5f20\" title=\"\u3010PHP\u3011PHP 8.1 \u7684\u65b0\u7279\u6027\u4e00\u89c8 | \u4ea4\u53c9\u7c7b\u578b\u3001\u679a\u4e3e\u3001never \u8fd4\u56de\u7c7b\u578b\u3001Fibers \u7ea4\u7a0b\u3001readonly \u53ea\u8bfb\u5c5e\u6027  \u7b2c1\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h3>\u4e8c\u3001PHP 8.1 \u65b0\u7279\u6027<\/h3>\n<h4>\u7eaf\u4ea4\u53c9\u7c7b\u578b Pure Intersection Types<\/h4>\n<p>PHP 8.1 \u589e\u52a0\u4e86\u5bf9\u4ea4\u53c9\u7c7b\u578b\u7684\u652f\u6301\u3002 \u5b83\u7c7b\u4f3c\u4e8e PHP 8.0 \u4e2d\u5f15\u5165\u7684\u8054\u5408\u7c7b\u578b\uff0c\u4f46\u5b83\u4eec\u7684\u7528\u9014\u6070\u6070\u76f8\u53cd\u3002<\/p>\n<p>\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3\u5b83\u7684\u7528\u6cd5\uff0c\u6211\u4eec\u770b\u4e0b PHP \u4e2d\u7c7b\u578b\u58f0\u660e\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u5c06\u7c7b\u578b\u58f0\u660e\u6dfb\u52a0\u5230\u51fd\u6570\u53c2\u6570\u3001\u8fd4\u56de\u503c\u548c\u7c7b\u5c5e\u6027\u3002 \u6b64\u5206\u914d\u79f0\u4e3a\u7c7b\u578b\u63d0\u793a\uff0c\u5e76\u786e\u4fdd\u8be5\u503c\u5728\u8c03\u7528\u65f6\u5177\u6709\u6b63\u786e\u7684\u7c7b\u578b\u3002 \u5426\u5219\uff0c\u5b83\u4f1a\u7acb\u5373\u629b\u51fa TypeError\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u58f0\u660e\u5355\u4e00\u7c7b\u578b\u6709\u5c40\u9650\u6027\u3002 \u8054\u5408\u7c7b\u578b\u5141\u8bb8\u58f0\u660e\u5177\u6709\u591a\u79cd\u7c7b\u578b\u7684\u503c\uff0c\u5e76\u4e14\u8f93\u5165\u5fc5\u987b\u6ee1\u8db3\u81f3\u5c11\u4e00\u79cd\u58f0\u660e\u7684\u7c7b\u578b\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\u4f7f\u7528 &amp; (AND) \u8fd0\u7b97\u7b26\u6765\u58f0\u660e\u4ea4\u53c9\u7c7b\u578b\u3002 \u76f8\u6bd4\u4e4b\u4e0b\uff0c\u6211\u4eec\u4f7f\u7528 | (OR) \u8fd0\u7b97\u7b26\u6765\u58f0\u660e\u8054\u5408\u7c7b\u578b\u3002<\/p>\n<p>\u5728\u4ea4\u96c6\u7c7b\u578b\u4e2d\u4f7f\u7528\u5927\u591a\u6570\u6807\u51c6\u7c7b\u578b\u5c06\u5bfc\u81f4\u6c38\u8fdc\u65e0\u6cd5\u5b9e\u73b0\u7684\u7c7b\u578b\uff08\u4f8b\u5982\u6574\u6570\u548c\u5b57\u7b26\u4e32\uff09\u3002 \u56e0\u6b64\uff0c\u4ea4\u53c9\u7c7b\u578b\u53ea\u80fd\u5305\u62ec\u7c7b\u7c7b\u578b\uff08\u5373\u63a5\u53e3\u548c\u7c7b\u540d\uff09\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u5982\u4f55\u4f7f\u7528\u4ea4\u53c9\u7c7b\u578b\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"prism language-php\"><span class=\"token keyword\">class<\/span> <span class=\"token class-name-definition class-name\">PureIntersectionTypesClass<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n\n    <span class=\"token keyword\">private<\/span> Traversable<span class=\"token operator\">&amp;<\/span><span class=\"token class-name type-declaration\">Countable<\/span> <span class=\"token variable\">$countableIterator<\/span><span class=\"token punctuation\">;<\/span>\n \n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">setIterator<\/span><span class=\"token punctuation\">(<\/span>Traversable<span class=\"token operator\">&amp;<\/span><span class=\"token class-name type-declaration\">Countable<\/span> <span class=\"token variable\">$countableIterator<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword return-type\">void<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">countableIterator<\/span> <span class=\"token operator\">=<\/span> <span class=\"token variable\">$countableIterator<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n \n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">getIterator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token class-name return-type\">Traversable<\/span><span class=\"token operator\">&amp;<\/span>Countable <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token keyword\">return<\/span> <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">countableIterator<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u53d8\u91cf countableIterator \u4f5c\u4e3a\u4e24\u79cd\u7c7b\u578b\u7684\u4ea4\u96c6\uff1aTraversable \u548c Countable\u3002 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u58f0\u660e\u7684\u4e24\u79cd\u7c7b\u578b\u90fd\u662f\u63a5\u53e3\u3002<\/p>\n<p>\u4ea4\u53c9\u7c7b\u578b\u4e5f\u7b26\u5408\u5df2\u7ecf\u7528\u4e8e\u7c7b\u578b\u68c0\u67e5\u548c\u7ee7\u627f\u7684\u6807\u51c6 PHP \u53d8\u5316\u89c4\u5219\u3002 \u4f46\u662f\u8fd8\u6709\u4e24\u4e2a\u989d\u5916\u7684\u89c4\u5219\u6765\u8bf4\u660e\u4ea4\u53c9\u7c7b\u578b\u5982\u4f55\u4e0e\u5b50\u7c7b\u578b\u4ea4\u4e92\u3002<\/p>\n<p>PHP 8.1 \u4e0d\u80fd\u5728\u540c\u4e00\u4e2a\u58f0\u660e\u4e2d\u7ec4\u5408\u8054\u5408\u7c7b\u578b\u548c\u4ea4\u53c9\u7c7b\u578b\u3002 \u56e0\u6b64\uff0c\u5b83\u7684\u5b9e\u73b0\u88ab\u79f0\u4e3a\u201c\u7eaf\u201d\u4ea4\u53c9\u7c7b\u578b\u3002<\/p>\n<h4>\u679a\u4e3e Enums<\/h4>\n<p>\u7f16\u7a0b\u8bed\u8a00\u4e2d\u6700\u5e38\u89c1\u7684\u679a\u4e3e\u793a\u4f8b\u662f\u5e03\u5c14\u7c7b\u578b\uff0c\u5176\u4e2d true \u548c false \u4f5c\u4e3a\u4e24\u80fd\u7684\u503c\u3002<\/p>\n<pre><code class=\"prism language-php\"><span class=\"token keyword\">enum<\/span> <span class=\"token class-name-definition class-name\">Suit<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n  <span class=\"token keyword\">case<\/span> <span class=\"token constant\">Hearts<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">case<\/span> <span class=\"token constant\">Diamonds<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">case<\/span> <span class=\"token constant\">Clubs<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">case<\/span> <span class=\"token constant\">Spades<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\uff0cSuit \u679a\u4e3e\u5b9a\u4e49\u4e86\u56db\u4e2a\u53ef\u80fd\u7684\u503c\uff1aHearts\u3001Diamonds\u3001Clubs \u548c Spades\u3002 \u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u76f4\u63a5\u8bbf\u95ee\u8fd9\u4e9b\u503c\uff1aSuit::Hearts\u3001Suit::Diamonds\u3001Suit::Clubs \u548c Suit::Spades\u3002<\/p>\n<p>\u679a\u4e3e\u662f\u5728\u7c7b\u548c\u5bf9\u8c61\u4e4b\u4e0a\u6784\u5efa\u7684\u3002 \u679a\u4e3e\u4e0e\u7c7b\u3001\u63a5\u53e3\u548c\u7279\u5f81\u5171\u4eab\u76f8\u540c\u7684\u547d\u540d\u7a7a\u95f4\u3002<\/p>\n<p>\u4e0a\u9762\u63d0\u5230\u7684\u679a\u4e3e\u79f0\u4e3a\u7eaf\u679a\u4e3e\u3002<\/p>\n<p>\u5982\u679c\u60a8\u60f3\u4e3a\u4efb\u4f55\u60c5\u51b5\u63d0\u4f9b\u6807\u91cf\u7b49\u6548\u503c\uff0c\u60a8\u8fd8\u53ef\u4ee5\u5b9a\u4e49\u652f\u6301\u7684\u679a\u4e3e\u3002 \u4f46\u662f\uff0c\u652f\u6301\u7684\u679a\u4e3e\u53ea\u80fd\u5177\u6709\u4e00\u79cd\u7c7b\u578b\uff0c\u5373 int \u6216 string\uff08\u4ece\u4e0d\u540c\u65f6\u5177\u6709\u4e24\u79cd\u7c7b\u578b\uff09\u3002<\/p>\n<pre><code class=\"prism language-php\"><span class=\"token keyword\">enum<\/span> <span class=\"token class-name-definition class-name\">Suit<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword type-declaration\">string<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n  <span class=\"token keyword\">case<\/span> <span class=\"token constant\">Hearts<\/span> <span class=\"token operator\">=<\/span> <span class=\"token string single-quoted-string\">'H'<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">case<\/span> <span class=\"token constant\">Diamonds<\/span> <span class=\"token operator\">=<\/span> <span class=\"token string single-quoted-string\">'D'<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">case<\/span> <span class=\"token constant\">Clubs<\/span> <span class=\"token operator\">=<\/span> <span class=\"token string single-quoted-string\">'C'<\/span><span class=\"token punctuation\">;<\/span>\n  <span class=\"token keyword\">case<\/span> <span class=\"token constant\">Spades<\/span> <span class=\"token operator\">=<\/span> <span class=\"token string single-quoted-string\">'S'<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n<p>\u6ce8\u610f\uff0c\u652f\u6301\u679a\u4e3e\u7684\u6240\u6709\u4e0d\u540c\u60c5\u51b5\u90fd\u5fc5\u987b\u5177\u6709\u552f\u4e00\u503c\u3002<\/p>\n<h4><code>never<\/code> \u8fd4\u56de\u7c7b\u578b<\/h4>\n<p>PHP 8.1 \u6dfb\u52a0\u4e86\u4e00\u4e2a\u540d\u4e3a never \u7684\u65b0\u8fd4\u56de\u7c7b\u578b\u63d0\u793a\u3002 \u5728\u603b\u662f\u629b\u51fa\u6216\u9000\u51fa\u7684\u51fd\u6570\u4e2d\u4f7f\u7528\u5b83\u975e\u5e38\u6709\u5e2e\u52a9\u3002<\/p>\n<pre><code class=\"prism language-php\"><span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">redirect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword type-hint\">string<\/span> <span class=\"token variable\">$uri<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token class-name return-type\">never<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token function\">header<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">'Location: '<\/span> <span class=\"token operator\">.<\/span> <span class=\"token variable\">$uri<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">exit<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n \n<span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">redirectToLoginPage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token class-name return-type\">never<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token function\">redirect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">'\/login'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n<p><code>never<\/code> \u8fd4\u56de\u7c7b\u578b\u7684\u51fd\u6570\u5e94\u6ee1\u8db3\u4e09\u4e2a\u6761\u4ef6\uff1a<\/p>\n<ul>\n<li>\u4e0d\u5e94\u8be5\u660e\u786e\u5b9a\u4e49 return \u8bed\u53e5\u3002<\/li>\n<li>\u4e0d\u5e94\u8be5\u9690\u5f0f\u5b9a\u4e49 return \u8bed\u53e5\uff08\u4f8b\u5982 if-else \u8bed\u53e5\uff09\u3002<\/li>\n<li>\u5fc5\u987b\u4ee5\u9000\u51fa\u8bed\u53e5\uff08\u663e\u5f0f\u6216\u9690\u5f0f\uff09\u7ed3\u675f\u5176\u6267\u884c\u3002<\/li>\n<\/ul>\n<p><code>never<\/code>\u8fd4\u56de\u7c7b\u578b\u4e0e <code>void<\/code> \u8fd4\u56de\u7c7b\u578b\u6709\u8bb8\u591a\u76f8\u4f3c\u4e4b\u5904\u3002 \u5b83\u4eec\u90fd\u786e\u4fdd\u51fd\u6570\u6216\u65b9\u6cd5\u4e0d\u8fd4\u56de\u503c\u3002 \u4f46\u662f\uff0c\u5b83\u901a\u8fc7\u6267\u884c\u66f4\u4e25\u683c\u7684\u89c4\u5219\u800c\u6709\u6240\u4e0d\u540c\u3002 \u4f8b\u5982\uff0c\u4e00\u4e2a void \u58f0\u660e\u7684\u51fd\u6570\u4ecd\u7136\u53ef\u4ee5\u5728\u6ca1\u6709\u663e\u5f0f\u503c\u7684\u60c5\u51b5\u4e0b\u8fd4\u56de\uff0c\u4f46\u4f60\u4e0d\u80fd\u5bf9\u4e00\u4e2a<code>never<\/code>\u8fd4\u56de\u7c7b\u578b\u7684\u51fd\u6570\u505a\u540c\u6837\u7684\u4e8b\u60c5\u3002<\/p>\n<h4>Fibers \u7ea4\u7a0b<\/h4>\n<p>\u4ece\u5386\u53f2\u4e0a\u770b\uff0cPHP \u4ee3\u7801\u51e0\u4e4e\u603b\u662f\u540c\u6b65\u4ee3\u7801\u3002 \u4ee3\u7801\u6267\u884c\u4f1a\u6682\u505c\uff0c\u76f4\u5230\u8fd4\u56de\u7ed3\u679c\uff0c\u5373\u4f7f\u5bf9\u4e8e I\/O \u64cd\u4f5c\u4e5f\u662f\u5982\u6b64\u3002 \u60a8\u53ef\u4ee5\u60f3\u8c61\u4e3a\u4ec0\u4e48\u8fd9\u4e2a\u8fc7\u7a0b\u53ef\u80fd\u4f1a\u4f7f\u4ee3\u7801\u6267\u884c\u901f\u5ea6\u53d8\u6162\u3002<\/p>\n<p>Fiber \u662f PHP \u901a\u8fc7\u865a\u62df\u7ebf\u7a0b\uff08\u6216\u7eff\u8272\u7ebf\u7a0b\uff09\u5904\u7406\u5e76\u884c\u6027\u7684\u65b9\u5f0f\u3002 \u5b83\u8bd5\u56fe\u901a\u8fc7\u5141\u8bb8 PHP \u51fd\u6570\u4e2d\u65ad\u800c\u4e0d\u5f71\u54cd\u6574\u4e2a\u8c03\u7528\u5806\u6808\u6765\u6d88\u9664\u540c\u6b65\u548c\u5f02\u6b65\u4ee3\u7801\u4e4b\u95f4\u7684\u5dee\u5f02\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Fibers \u5f00\u53d1\u5168\u6808\u3001\u53ef\u4e2d\u65ad\u7684 PHP \u51fd\u6570\uff0c\u7136\u540e\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u51fd\u6570\u5728 PHP \u4e2d\u5b9e\u73b0\u534f\u4f5c\u5f0f\u591a\u4efb\u52a1\u5904\u7406\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/mushiming_com\/95ef45104842476b994d3296e1da5d64.png\" =\"\" =\"\" alt=\"\u3010PHP\u3011PHP 8.1 \u7684\u65b0\u7279\u6027\u4e00\u89c8 | \u4ea4\u53c9\u7c7b\u578b\u3001\u679a\u4e3e\u3001never \u8fd4\u56de\u7c7b\u578b\u3001Fibers \u7ea4\u7a0b\u3001readonly \u53ea\u8bfb\u5c5e\u6027 (https:\/\/mushiming.com\/)  \u7b2c2\u5f20\" title=\"\u3010PHP\u3011PHP 8.1 \u7684\u65b0\u7279\u6027\u4e00\u89c8 | \u4ea4\u53c9\u7c7b\u578b\u3001\u679a\u4e3e\u3001never \u8fd4\u56de\u7c7b\u578b\u3001Fibers \u7ea4\u7a0b\u3001readonly \u53ea\u8bfb\u5c5e\u6027  \u7b2c2\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<pre><code class=\"prism language-php\"><span class=\"token variable\">$fiber<\/span> <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Fiber<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">function<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token keyword return-type\">void<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token variable\">$value<\/span> <span class=\"token operator\">=<\/span> <span class=\"token class-name static-context\">Fiber<\/span><span class=\"token operator\">::<\/span><span class=\"token function\">suspend<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">'fiber'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">echo<\/span> <span class=\"token string double-quoted-string\">\"Value used to resume fiber: \"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token variable\">$value<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string double-quoted-string\">\"\\n\"<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n \n<span class=\"token variable\">$value<\/span> <span class=\"token operator\">=<\/span> <span class=\"token variable\">$fiber<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">start<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u542f\u52a8<\/span>\n \n<span class=\"token keyword\">echo<\/span> <span class=\"token string double-quoted-string\">\"Value from fiber suspending: \"<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token variable\">$value<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string double-quoted-string\">\"\\n\"<\/span><span class=\"token punctuation\">;<\/span>\n \n<span class=\"token variable\">$fiber<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">resume<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string single-quoted-string\">'test'<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u6062\u590d<\/span>\n<\/code><\/pre>\n<p>\u4e0a\u9762\u7684\u793a\u4f8b\u8f93\u51fa\u5982\u4e0b\u3002<\/p>\n<pre class=\"language-java prettyprint linenums\"><code class=\"prism language-php\">Value from fiber suspending<span class=\"token punctuation\">:<\/span> fiber\nValue used to resume fiber<span class=\"token punctuation\">:<\/span> test\n<\/code><\/pre>\n<h4>readonly \u53ea\u8bfb\u5c5e\u6027<\/h4>\n<p>PHP 8.1 \u589e\u52a0\u4e86\u5bf9\u53ea\u8bfb\u5c5e\u6027\u7684\u652f\u6301\u3002 \u5b83\u4eec\u53ea\u80fd\u4ece\u58f0\u660e\u5b83\u4eec\u7684\u8303\u56f4\u521d\u59cb\u5316\u4e00\u6b21\u3002 \u521d\u59cb\u5316\u540e\uff0c\u60a8\u5c06\u65e0\u6cd5\u4fee\u6539\u5b83\u4eec\u7684\u503c\u3002 \u8fd9\u6837\u505a\u4f1a\u5f15\u53d1\u9519\u8bef\u5f02\u5e38\u3002<\/p>\n<pre><code class=\"prism language-php\"><span class=\"token keyword\">class<\/span> <span class=\"token class-name-definition class-name\">Test<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">public<\/span> readonly <span class=\"token keyword type-declaration\">string<\/span> <span class=\"token variable\">$kinsta<\/span><span class=\"token punctuation\">;<\/span>\n \n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">function<\/span> <span class=\"token function-definition function\">__construct<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword type-hint\">string<\/span> <span class=\"token variable\">$kinsta<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token comment\">\/\/ \u521d\u59cb\u5316<\/span>\n        <span class=\"token variable\">$this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token property\">kinsta<\/span> <span class=\"token operator\">=<\/span> <span class=\"token variable\">$kinsta<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n<p>readonly \u5c5e\u6027\u5728\u7c7b\u5185\u90e8\u548c\u5916\u90e8\u90fd\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u4e0d\u53d8\u6027\u4fdd\u8bc1\u3002<\/p>\n<h3>\u4e09\u3001\u603b\u7ed3<\/h3>\n<p>PHP 8.1 \u7684\u65b0\u7279\u6027\u5f88\u591a\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u91cd\u70b9\u653e\u5728<\/p>\n<ul>\n<li>\u679a\u4e3e<\/li>\n<li>never\u7c7b\u578b<\/li>\n<li>\u4ea4\u53c9\u7c7b\u578b<\/li>\n<li>\u53ea\u8bfb\u5c5e\u6027<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"\u3010PHP\u3011PHP 8.1 \u7684\u65b0\u7279\u6027\u4e00\u89c8 | \u4ea4\u53c9\u7c7b\u578b\u3001\u679a\u4e3e\u3001never \u8fd4\u56de\u7c7b\u578b\u3001Fibers \u7ea4\u7a0b\u3001readonly \u53ea\u8bfb\u5c5e\u6027\u5728\u5de5\u4f5c\u8868\u4e2d\u4ee5\u5217\u6216\u884c\u7684\u5f62\u5f0f...","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/8128"}],"collection":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/comments?post=8128"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/8128\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=8128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=8128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=8128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}