{"id":202490,"date":"2025-05-13T13:09:34","date_gmt":"2025-05-13T05:09:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202490\/"},"modified":"2025-05-13T13:09:34","modified_gmt":"2025-05-13T05:09:34","slug":"php%e5%87%bd%e6%95%b0%e4%bd%9c%e7%94%a8%e5%9f%9f%e5%a6%82%e4%bd%95%e5%bd%b1%e5%93%8d%e5%8f%98%e9%87%8f%e5%a3%b0%e6%98%8e%e5%92%8c%e8%ae%bf%e9%97%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202490\/","title":{"rendered":"PHP\u51fd\u6570\u4f5c\u7528\u57df\u5982\u4f55\u5f71\u54cd\u53d8\u91cf\u58f0\u660e\u548c\u8bbf\u95ee"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP\u51fd\u6570\u4f5c\u7528\u57df\u5982\u4f55\u5f71\u54cd\u53d8\u91cf\u58f0\u660e\u548c\u8bbf\u95ee<\/h1>\n<p>\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aPHP\u51fd\u6570\u4f5c\u7528\u57df\u5982\u4f55\u5f71\u54cd\u53d8\u91cf\u58f0\u660e\u548c\u8bbf\u95ee\u300b<\/span>\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p>PHP \u51fd\u6570\u5177\u6709\u4f5c\u7528\u57df\u9650\u5236\uff0c\u5168\u5c40\u53d8\u91cf\u53ef\u4ee5\u5728\u51fd\u6570\u53ca\u5176\u5d4c\u5957\u51fd\u6570\u4e2d\u8bbf\u95ee\uff0c\u800c\u5c40\u90e8\u53d8\u91cf\u4ec5\u5728\u5176\u58f0\u660e\u7684\u51fd\u6570\u5185\u53ef\u89c1\u3002\u5c40\u90e8\u53d8\u91cf\u8986\u76d6\u540c\u540d\u5168\u5c40\u53d8\u91cf\uff0c\u5d4c\u5957\u51fd\u6570\u53ef\u8bbf\u95ee\u5176\u7236\u51fd\u6570\u7684\u53d8\u91cf\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241025\/1729839465671b41699020d.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>PHP \u51fd\u6570\u4f5c\u7528\u57df\uff1a\u53d8\u91cf\u58f0\u660e\u548c\u8bbf\u95ee\u6307\u5357<\/strong><\/p>\n<p>\u51fd\u6570\u4f5c\u7528\u57df\u5b9a\u4e49\u4e86\u53d8\u91cf\u5728\u7279\u5b9a\u51fd\u6570\u5185\u53ef\u89c1\u7684\u8303\u56f4\u3002\u5728 PHP \u4e2d\uff0c\u53d8\u91cf\u7684\u4f5c\u7528\u57df\u53d6\u51b3\u4e8e\u5b83\u4eec\u662f\u5728\u51fd\u6570\u5185\u90e8\u8fd8\u662f\u5916\u90e8\u58f0\u660e\u7684\u3002<\/p>\n<p><strong>\u5168\u5c40\u53d8\u91cf<\/strong><\/p>\n<p>\u5168\u5c40\u53d8\u91cf\u5728\u51fd\u6570\u5916\u90e8\u58f0\u660e\uff0c\u53ef\u4ee5\u5728\u8be5\u51fd\u6570\u53ca\u5176\u5d4c\u5957\u51fd\u6570\u4e2d\u8bbf\u95ee\u3002<\/p>\n<pre>\/\/ \u5916\u90e8\u58f0\u660e\u5168\u5c40\u53d8\u91cf\n$global_variable = \"\u5168\u5c40\u53d8\u91cf\";\n\nfunction outer_function() {\n    echo $global_variable; \/\/ \u8bbf\u95ee\u5168\u5c40\u53d8\u91cf\n}<\/pre>\n<p><strong>\u5c40\u90e8\u53d8\u91cf<\/strong><\/p>\n<p>\u5c40\u90e8\u53d8\u91cf\u5728\u51fd\u6570\u5185\u90e8\u58f0\u660e\uff0c\u53ea\u5728\u8be5\u51fd\u6570\u53ca\u5176\u5d4c\u5957\u51fd\u6570\u4e2d\u53ef\u89c1\u3002<\/p>\n<pre>function inner_function() {\n    $local_variable = \"\u5c40\u90e8\u53d8\u91cf\";\n    echo $local_variable; \/\/ \u8bbf\u95ee\u5c40\u90e8\u53d8\u91cf\n}<\/pre>\n<p><strong>\u53d8\u91cf\u8bbf\u95ee\u89c4\u5219<\/strong><\/p>\n<ul>\n<li>\u51fd\u6570\u5185\u90e8\u7684\u5c40\u90e8\u53d8\u91cf\u8986\u76d6\u4e86\u540c\u540d\u7684\u5168\u5c40\u53d8\u91cf\u3002<\/li>\n<li>\u5f53\u51fd\u6570\u5185\u6ca1\u6709\u540c\u540d\u53d8\u91cf\u65f6\uff0c\u51fd\u6570\u624d\u4f1a\u8bbf\u95ee\u5168\u5c40\u53d8\u91cf\u3002<\/li>\n<li>\u5d4c\u5957\u51fd\u6570\u53ef\u4ee5\u8bbf\u95ee\u4e0e\u5176\u7236\u51fd\u6570\u7684\u53d8\u91cf\uff0c\u65e0\u8bba\u5b83\u4eec\u662f\u5168\u5c40\u7684\u8fd8\u662f\u5c40\u90e8\u7684\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p><strong>\u8d2d\u7269\u8f66\u7cfb\u7edf\u793a\u4f8b<\/strong><\/p>\n<p>\u5728\u8d2d\u7269\u8f66\u7cfb\u7edf\u4e2d\uff0c\u8d2d\u7269\u8f66\u53d8\u91cf\u5b58\u50a8\u7528\u6237\u9009\u62e9\u7684\u5546\u54c1\u3002\u4e3a\u4e86\u5728\u4e0d\u540c\u7684\u51fd\u6570\u4e2d\u8bbf\u95ee\u8d2d\u7269\u8f66\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5168\u5c40\u53d8\u91cf\uff1a<\/p>\n<pre>\/\/ \u5168\u5c40\u8d2d\u7269\u8f66\u53d8\u91cf\n$cart = [];\n\nfunction add_product($product_id) {\n    global $cart;\n    $cart[] = $product_id;\n}\n\nfunction get_total_items() {\n    global $cart;\n    return count($cart);\n}<\/pre>\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c<code>$cart<\/code> \u53d8\u91cf\u7528\u4f5c\u5168\u5c40\u53d8\u91cf\uff0c\u53ef\u4ee5\u5728 <code>add_product()<\/code> \u548c <code>get_total_items()<\/code> \u51fd\u6570\u4e2d\u8bbf\u95ee\u3002<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aPHP\u51fd\u6570\u4f5c\u7528\u57df\u5982\u4f55\u5f71\u54cd\u53d8\u91cf\u58f0\u660e\u548c\u8bbf\u95ee\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u51fd\u6570\u4f5c\u7528\u57df\u5982\u4f55\u5f71\u54cd\u53d8\u91cf\u58f0\u660e&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202490","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202490","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202490"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202490\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}