{"id":30346,"date":"2022-12-01T03:57:56","date_gmt":"2023-04-16T13:16:00","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e4%bd%9c%e7%94%a8%e5%9f%9f\/"},"modified":"2025-08-12T18:44:07","modified_gmt":"2025-08-12T10:44:07","slug":"php%e7%9a%84%e4%bd%9c%e7%94%a8%e5%9f%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e4%bd%9c%e7%94%a8%e5%9f%9f\/","title":{"rendered":"PHP\u7684\u4f5c\u7528\u57df"},"content":{"rendered":"

\u56e0\u4e3a\u5b66\u4e60\u4e86PHP\u4e2d\u7684\u5168\u5c40\u4f5c\u7528\u57df\u548c\u5c40\u90e8\u4f5c\u7528\u57df\uff0c\u4e3a\u4e86\u4e0d\u5fd8\u8bb0\uff0c\u6211\u5c06\u5176\u4f5c\u4e3a\u5907\u5fd8\u5f55\u7559\u4e0b\u6765\u3002<\/p>\n

\u5168\u7403\u8303\u56f4<\/h2>\n

\u5f71\u54cd\u6240\u6709\u5f00\u53d1\u73af\u5883\u7684\u53d8\u91cf\uff08\u8d85\u51fa\u8303\u56f4\u7684\u53d8\u91cf\uff09\u3002<\/p>\n

$globalScope<\/span> =<\/span> '\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n\r\nfunction<\/span> localScope<\/span>()<\/span>\r\n{<\/span>\r\n  $localScope<\/span> =<\/span> '\u30ed\u30fc\u30ab\u30eb\u306a\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n  echo<\/span> $localScope<\/span>;<\/span>\r\n}<\/span>\r\n\r\necho<\/span> $globalScope<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5728\u4e2d\u56fd\u672c\u5730\u5316\u8bed\u5883\u4e0b\uff0c\u4f7f\u7528\u4e2d\u6587\u91ca\u4e49\u4e3a\uff1aecho $globalScope;\u8bed\u53e5\u4f1a\u8f93\u51fa\u201c\u8fd9\u662f\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf\u201d\u3002<\/p>\n
\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
function<\/span> localScope<\/span>()<\/span>\r\n{<\/span>\r\n  global<\/span> $globalScope<\/span>;<\/span>\r\n  $localScope<\/span> =<\/span> '\u30ed\u30fc\u30ab\u30eb\u306a\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n  echo<\/span> $localScope<\/span>;<\/span>\r\n}<\/span>\r\nlocalScope<\/span>();<\/span>\r\n<\/code><\/pre>\n
\u5728\u51fd\u6570\u4e2d\uff0c\u5728$globalScope\u4e4b\u524d\u52a0\u4e0aglobal\u5173\u952e\u5b57\u53ef\u4ee5\u8c03\u7528\u5728\u51fd\u6570\u5185\u90e8\u58f0\u660e\u7684\u53d8\u91cf\u3002<\/p>\n
\u672c\u5730\u8303\u56f4<\/h2>\n
\u53ea\u80fd\u5728\u4f5c\u7528\u57df\u51fd\u6570\u5185\u90e8\u4f7f\u7528\u7684\u53d8\u91cf<\/p>\n
function<\/span> localScope<\/span>()<\/span>\r\n{<\/span>\r\n  $localScope<\/span> =<\/span> '\u30ed\u30fc\u30ab\u30eb\u306a\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n  echo<\/span> $localScope<\/span>;<\/span>\r\n}<\/span>\r\n\r\nlocalScope<\/span>();<\/span>\r\n<\/code><\/pre>\n
\u5f53\u5728\u51fd\u6570\u5916\u8c03\u7528\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728localScope()\u4e4b\u524d\u52a0\u4e0a\u8c03\u7528\u7b26\u53f7\u6765\u8c03\u7528\u51fd\u6570\u3002<\/p>\n
\u5f53\u6211\u4eec\u60f3\u5728\u51fd\u6570\u5185\u4f7f\u7528\u5168\u5c40\u53d8\u91cf\u65f6\uff0c\u5e94\u8be5\u5c06\u5176\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u8fdb\u51fd\u6570\u3002<\/h3>\n
$globalScope<\/span> =<\/span> '\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u5909\u6570\u3067\u3059'<\/span>;<\/span>\r\n\r\nfunction<\/span> localScope<\/span>(<\/span>$val<\/span>)<\/span>\r\n{<\/span>\r\n  echo<\/span> $val<\/span>;<\/span>\r\n}<\/span>\r\n\r\nlocalScope<\/span>(<\/span>$globalScope<\/span>);<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u56e0\u4e3a\u5b66\u4e60\u4e86PHP\u4e2d\u7684\u5168\u5c40\u4f5c\u7528\u57df\u548c\u5c40\u90e8\u4f5c\u7528\u57df\uff0c\u4e3a\u4e86\u4e0d\u5fd8\u8bb0\uff0c\u6211\u5c06\u5176\u4f5c\u4e3a\u5907\u5fd8\u5f55\u7559\u4e0b\u6765\u3002 \u5168\u7403\u8303\u56f4 \u5f71\u54cd\u6240\u6709\u5f00\u53d1\u73af\u5883\u7684 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30346","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\nPHP\u7684\u4f5c\u7528\u57df - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8ePHP\u7684\u4f5c\u7528\u57df\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\u7684\u4f5c\u7528\u57df\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP\u7684\u4f5c\u7528\u57df\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8ePHP\u7684\u4f5c\u7528\u57df\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u7684\u4f5c\u7528\u57df\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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