{"id":30706,"date":"2023-12-22T12:24:31","date_gmt":"2023-12-22T04:24:31","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e4%b8%ad%e7%9a%84%e7%b1%bb%e5%9e%8b%e5%a3%b0%e6%98%8e\/"},"modified":"2025-08-12T20:26:08","modified_gmt":"2025-08-12T12:26:08","slug":"php%e4%b8%ad%e7%9a%84%e7%b1%bb%e5%9e%8b%e5%a3%b0%e6%98%8e","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e4%b8%ad%e7%9a%84%e7%b1%bb%e5%9e%8b%e5%a3%b0%e6%98%8e\/","title":{"rendered":"PHP\u4e2d\u7684\u7c7b\u578b\u58f0\u660e"},"content":{"rendered":"

PHP7\u4ee5\u540e\u7684\u7248\u5f0f\u58f0\u660e\u66f4\u52a0\u4e30\u5bcc\uff0c\u5c24\u5176\u57287.4\u7248\u672c\u4e2d\u663e\u8457\u6539\u8fdb\uff0c\u589e\u52a0\u4e86\u8bb8\u591a\u7c7b\u578b\u58f0\u660e\u7684\u673a\u4f1a\uff0c\u73b0\u5c06\u5176\u603b\u7ed3\u5982\u4e0b\u3002<\/p>\n

1.\u51fd\u6570\u53c2\u6570\u7684\u7c7b\u578b\uff08\u7c7b\u578b\u63d0\u793a\uff09<\/h1>\n
\/\/ int\u578b\u306e\u307f<\/span>\r\nfunction<\/span> hoge<\/span>(<\/span>int<\/span> $num<\/span>)<\/span>\r\n{<\/span>\r\n    echo<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n\/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u5024<\/span>\r\nfunction<\/span> hoge<\/span>(<\/span>int<\/span> $num<\/span> =<\/span> 0<\/span>)<\/span>\r\n{<\/span>\r\n    echo<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n\/\/ null\u8a31\u5bb9\u578b<\/span>\r\nfunction<\/span> hoge<\/span>(<\/span>?int<\/span> $num<\/span>)<\/span>\/\/ int $num = null\u3082\u53ef<\/span>\r\n{<\/span>\r\n    echo<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n\r\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8(ex.Laravel)<\/span>\r\nfunction<\/span> hoge<\/span>(<\/span>Request<\/span> $request<\/span>)<\/span>\r\n{<\/span>\r\n    echo<\/span> $request<\/span>-><\/span>hoge<\/span>;<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
\u8fd4\u56de\u503c<\/h1>\n
\/\/ int\u578b\u306e\u307f<\/span>\r\nfunction<\/span> hoge<\/span>(<\/span>int<\/span> $num<\/span>):<\/span> int<\/span>\r\n{<\/span>\r\n    return<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n\r\n\/\/ null\u8a31\u5bb9<\/span>\r\nfunction<\/span> hoge<\/span>(<\/span>?int<\/span> $num<\/span>):<\/span> ?int<\/span>\r\n{<\/span>\r\n    return<\/span> $num<\/span>;<\/span>\r\n}<\/span>\r\n\r\n\/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8(ex.Laravel)<\/span>\r\nfunction<\/span> hoge<\/span>(<\/span>Request<\/span> $request<\/span>):<\/span> Request<\/span>\r\n{<\/span>\r\n    return<\/span> $request<\/span>;<\/span>\r\n}<\/span>\r\n\r\n\/\/ void(return\u3057\u306a\u3044\u30e1\u30bd\u30c3\u30c9)<\/span>\r\nfunction<\/span> hoge<\/span>(<\/span>Request<\/span> $request<\/span>):<\/span> void<\/span>\r\n{<\/span>\r\n    echo<\/span> $request<\/span>-><\/span>hoge<\/span>;<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
\u5c5e\u6027\uff08\u7c7b\u53d8\u91cf\uff09<\/h1>\n
\r\nclass<\/span> User<\/span>\r\n{<\/span>\r\n    \/\/ int\u306e\u307f<\/span>\r\n    protected<\/span> int<\/span> $age<\/span>;<\/span>\r\n    \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8<\/span>\r\n    protected<\/span> string<\/span> $name<\/span> =<\/span> 'hoge'<\/span>;<\/span>\r\n    \/\/ null\u8a31\u5bb9<\/span>\r\n    protected<\/span> ?string<\/span> $address<\/span>;<\/span>\r\n    \/\/ \u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/span>\r\n    protected<\/span> Request<\/span> $request<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u867d\u7136\u5df2\u7ecf\u4f7f\u7528\u4e867.4\u7248\u672c\uff0c\u4f46\u4ecd\u7136\u6709\u8bb8\u591a\u5730\u65b9\u751a\u81f3\u8fde\u7c7b\u578b\u63d0\u793a\u4e5f\u6ca1\u6709\uff0c\u6240\u4ee5\u5e0c\u671b\u80fd\u79ef\u6781\u4f7f\u7528\u5b83\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP7\u4ee5\u540e\u7684\u7248\u5f0f\u58f0\u660e\u66f4\u52a0\u4e30\u5bcc\uff0c\u5c24\u5176\u57287.4\u7248\u672c\u4e2d\u663e\u8457\u6539\u8fdb\uff0c\u589e\u52a0\u4e86\u8bb8\u591a\u7c7b\u578b\u58f0\u660e\u7684\u673a\u4f1a\uff0c\u73b0\u5c06\u5176\u603b\u7ed3\u5982\u4e0b\u3002 1.\u51fd […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30706","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\nPHP\u4e2d\u7684\u7c7b\u578b\u58f0\u660e - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8ePHP\u4e2d\u7684\u7c7b\u578b\u58f0\u660e\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u4e2d\u7684\u7c7b\u578b\u58f0\u660e\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP\u4e2d\u7684\u7c7b\u578b\u58f0\u660e\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8ePHP\u4e2d\u7684\u7c7b\u578b\u58f0\u660e\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u4e2d\u7684\u7c7b\u578b\u58f0\u660e\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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