{"id":30854,"date":"2023-05-08T23:31:34","date_gmt":"2024-02-22T14:29:43","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e7%b1%bb%e5%9e%8b%e6%8f%90%e7%a4%ba%e5%a4%87%e5%bf%98%e5%bd%95\/"},"modified":"2025-08-12T21:06:20","modified_gmt":"2025-08-12T13:06:20","slug":"php%e7%9a%84%e7%b1%bb%e5%9e%8b%e6%8f%90%e7%a4%ba%e5%a4%87%e5%bf%98%e5%bd%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e7%b1%bb%e5%9e%8b%e6%8f%90%e7%a4%ba%e5%a4%87%e5%bf%98%e5%bd%95\/","title":{"rendered":"PHP\u7684\u7c7b\u578b\u63d0\u793a\u5907\u5fd8\u5f55"},"content":{"rendered":"

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\n
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\u81ea PHP7 \u5f00\u59cb\uff0c\u53ef\u4ee5\u5728\u8fd4\u56de\u503c\u4e2d\u6dfb\u52a0\u7c7b\u578b\u63d0\u793a\u3002\u57fa\u672c\u4e0a\u548c\u51fd\u6570\u7684\u7c7b\u578b\u63d0\u793a\u4e00\u6837\u3002<\/p>\n

function<\/span> test<\/span>():<\/span> int<\/span>\r\n<\/code><\/pre>\n
\u53e6\u5916\uff0c\u4ecePHP7.1\u5f00\u59cb\u4e5f\u652f\u6301void\u7c7b\u578b\u3002<\/p>\n
function<\/span> test<\/span>():<\/span> void<\/span>\r\n<\/code><\/pre>\n
\u5f3a\u5236\u5f3a\u7c7b\u578b\u5316\uff08\u4ece7\u5f00\u59cb\uff09\u3002<\/h1>\n
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\n\u5982\u679c\u7c7b\u578b\u4e0d\u5339\u914d\uff0c\u5219\u629b\u51faTypeError\u3002<\/p>\n
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\u5982\u679cPHP\u7248\u672c\u4f4e\u4e8e7.1\uff0c\u5219\u5728\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u4e2d\u6307\u5b9anull\u5c06\u8d77\u4f5c\u7528\uff08\u4e25\u683c\u6765\u8bf4\u53ea\u662f\u6709\u7c7b\u4f3c\u7684\u529f\u80fd\uff09\u3002<\/p>\n
function<\/span> test<\/span>(<\/span>int<\/span> $number<\/span> =<\/span> null<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u4ecePHP7.1\u5f00\u59cb\uff0c\u5728\u7c7b\u578b\u4e4b\u524d\u52a0\u4e0a\u4e86\u4e00\u4e2a?\u3002\u6b64\u5916\uff0c\u8fd9\u4e5f\u53ef\u4ee5\u7528\u4e8e\u6307\u5b9a\u8fd4\u56de\u503c\u7684\u7c7b\u578b\u3002<\/p>\n
function<\/span> test<\/span>(<\/span>?int<\/span> $number<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u4ece7.1\u5f00\u59cb\u5f15\u5165\u7684\u53ef\u8fed\u4ee3\u5bf9\u8c61<\/h1>\n
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\u989d\u5916\u6536\u8d39<\/h1>\n
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\u4e4b\u524d\uff0c\u65e0\u6cd5\u4e3a\u7c7b\u5e38\u91cf\u6dfb\u52a0\u8bbf\u95ee\u4fee\u9970\u7b26\uff08\u5982public\u7b49\uff09\uff0c\u4f46\u4ece7.1\u7248\u672c\u5f00\u59cb\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n
class<\/span> Sample<\/span> {<\/span>\r\n    public<\/span> const<\/span> $test<\/span>;<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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