{"id":30762,"date":"2022-10-17T02:27:27","date_gmt":"2023-09-27T04:18:38","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e3%80%91%e8%ae%a1%e6%95%b0%e5%a4%87%e6%b3%a8\/"},"modified":"2025-08-12T20:42:21","modified_gmt":"2025-08-12T12:42:21","slug":"%e3%80%90php%e3%80%91%e8%ae%a1%e6%95%b0%e5%a4%87%e6%b3%a8","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e3%80%91%e8%ae%a1%e6%95%b0%e5%a4%87%e6%b3%a8\/","title":{"rendered":"\u3010PHP\u3011\u8ba1\u6570()\u5907\u6ce8"},"content":{"rendered":"

PHP\u7684\u7c7b\u578b\u5904\u7406\u7b14\u8bb0<\/h1>\n

\u6267\u884c\u73af\u5883<\/h2>\n

PHP 7.0x\uff1a\u53ea\u9700\u8981\u4e00\u79cd\u9009\u62e9<\/p>\n

\u8ba1\u7b97()<\/h2>\n

\u6574\u7406\u578b\u5468\u8fb9\u7684\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n

$array1<\/span> =<\/span> false<\/span>;<\/span>\r\n$array2<\/span> =<\/span> 'str'<\/span>;<\/span>\r\n$array3<\/span> =<\/span> [<\/span>\r\n    'a'<\/span>,<\/span>\r\n    'b'<\/span>,<\/span>\r\n];<\/span>\r\n$array4<\/span> =<\/span> [<\/span>\r\n    [<\/span>'a'<\/span>],<\/span>\r\n    [<\/span>'b'<\/span>],<\/span>\r\n];<\/span>\r\n$array5<\/span> =<\/span> null<\/span>;<\/span>\r\n\r\necho<\/span> count<\/span>(<\/span>$array1<\/span>);<\/span> \/\/ 1<\/span>\r\necho<\/span> count<\/span>(<\/span>$array2<\/span>);<\/span> \/\/ 1<\/span>\r\necho<\/span> count<\/span>(<\/span>$array3<\/span>);<\/span> \/\/ 2<\/span>\r\necho<\/span> count<\/span>(<\/span>$array4<\/span>);<\/span> \/\/ 2<\/span>\r\necho<\/span> count<\/span>(<\/span>$array5<\/span>);<\/span> \/\/ 0<\/span>\r\necho<\/span> count<\/span>((<\/span>array<\/span>)<\/span>$array1<\/span>);<\/span> \/\/ 1<\/span>\r\necho<\/span> count<\/span>((<\/span>array<\/span>)<\/span>$array2<\/span>);<\/span> \/\/ 1<\/span>\r\n\r\n<\/code><\/pre>\n
\u6839\u636e\u60a8\u7684\u8bc4\u8bba\uff0c\u5982\u679c\u7c7b\u578b\u4e0d\u6b63\u786e\uff0cPHP7.2\u5c06\u663e\u793a\u8b66\u544a\u3002
\nhttps:\/\/www.php.net\/manual\/ja\/migration72.incompatible.php#migration72.incompatible.warn-on-non-countable-types<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP\u7684\u7c7b\u578b\u5904\u7406\u7b14\u8bb0 \u6267\u884c\u73af\u5883 PHP 7.0x\uff1a\u53ea\u9700\u8981\u4e00\u79cd\u9009\u62e9 \u8ba1\u7b97() \u6574\u7406\u578b\u5468\u8fb9\u7684\u6ce8\u610f\u4e8b\u9879\u3002 $arra […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30762","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u3010PHP\u3011\u8ba1\u6570()\u5907\u6ce8 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u3010PHP\u3011\u8ba1\u6570()\u5907\u6ce8\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\/\u3010php\u3011\u8ba1\u6570\u5907\u6ce8\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010PHP\u3011\u8ba1\u6570()\u5907\u6ce8\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u3010PHP\u3011\u8ba1\u6570()\u5907\u6ce8\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010php\u3011\u8ba1\u6570\u5907\u6ce8\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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