{"id":195213,"date":"2024-11-13T13:09:25","date_gmt":"2024-11-13T05:09:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/195213\/"},"modified":"2024-11-13T13:09:26","modified_gmt":"2024-11-13T05:09:26","slug":"%e5%84%aa%e5%8c%96%e6%8a%80%e5%b7%a7%e5%88%86%e4%ba%ab%e8%80%83%e8%a9%a6%e7%b3%bb%e7%b5%b1%e8%88%87%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8f%88%e6%8e%a5%e4%bb%a3%e7%a2%bc%e5%af%a6%e7%8f%be-%e8%80%83%e8%a9%a6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/195213\/","title":{"rendered":"\u512a\u5316\u6280\u5de7\u5206\u4eab\u8003\u8a66\u7cfb\u7d71\u8207\u6578\u64da\u5eab\u93c8\u63a5\u4ee3\u78bc\u5be6\u73fe (\u8003\u8a66\u7cfb\u7d71\u8207\u6578\u64da\u5eab\u93c8\u63a5 \u4ee3\u78bc)"},"content":{"rendered":"<h1 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id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b8%e6%93%87-sqQYGwmLQi\">\u6578\u64da\u5eab\u9078\u64c7<\/h2>\n<p>\u5728\u9078\u64c7\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u7cfb\u7d71\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u985e\u578b\u3002\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982 MySQL\u3001PostgreSQL\uff09\u9069\u5408\u9700\u8981\u8907\u96dc\u67e5\u8a62\u548c\u4e8b\u52d9\u8655\u7406\u7684\u61c9\u7528\uff0c\u800c\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982 MongoDB\uff09\u5247\u9069\u5408\u9700\u8981\u9ad8\u64f4\u5c55\u6027\u548c\u9748\u6d3b\u6578\u64da\u7d50\u69cb\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e4%bb%a3%e7%a2%bc%e5%af%a6%e7%8f%be-sqQYGwmLQi\">\u6578\u64da\u5eab\u9023\u63a5\u4ee3\u78bc\u5be6\u73fe<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u6bb5\u4f7f\u7528 PHP \u548c MySQL 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id=\"%e5%84%aa%e5%8c%96%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2-sqQYGwmLQi\">\u512a\u5316\u6578\u64da\u5eab\u67e5\u8a62<\/h2>\n<p>\u5728\u8003\u8a66\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u5eab\u67e5\u8a62\u7684\u6548\u7387\u76f4\u63a5\u5f71\u97ff\u5230\u7cfb\u7d71\u7684\u97ff\u61c9\u901f\u5ea6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u67e5\u8a62\u7684\u6280\u5de7\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u70ba\u5e38\u7528\u7684\u67e5\u8a62\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li><strong>\u907f\u514d SELECT *\uff1a<\/strong>\u53ea\u9078\u64c7\u9700\u8981\u7684\u5b57\u6bb5\uff0c\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u91cf\u3002<\/li>\n<li><strong>\u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\uff1a<\/strong>\u9019\u4e0d\u50c5\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u9084\u80fd\u9632\u6b62 SQL \u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e6%b1%a0-sqQYGwmLQi\">\u6578\u64da\u5eab\u9023\u63a5\u6c60<\/h2>\n<p>\u5728\u9ad8\u4e26\u767c\u7684\u8003\u8a66\u7cfb\u7d71\u4e2d\uff0c\u4f7f\u7528\u6578\u64da\u5eab\u9023\u63a5\u6c60\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\uff0c\u6e1b\u5c11\u9023\u63a5\u5efa\u7acb\u7684\u958b\u92b7\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u9023\u63a5\u6c60\u5be6\u73fe\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\nclass Database {\n    private static $instance = null;\n    private $connection;\n\n    private function __construct() {\n        $this-&gt;connection = new mysqli($servername, $username, $password, $dbname);\n    }\n\n    public static function getInstance() {\n        if (self::$instance == null) {\n            self::$instance = new Database();\n        }\n        return self::$instance-&gt;connection;\n    }\n}\n?&gt;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5be6\u73fe\u4e86\u4e00\u500b\u55ae\u4f8b\u6a21\u5f0f\u7684\u6578\u64da\u5eab\u9023\u63a5\u6c60\uff0c\u78ba\u4fdd\u5728\u6574\u500b\u61c9\u7528\u4e2d\u53ea\u5efa\u7acb\u4e00\u500b\u6578\u64da\u5eab\u9023\u63a5\uff0c\u5f9e\u800c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e5%ae%89%e5%85%a8%e6%80%a7%e8%80%83%e9%87%8f-sqQYGwmLQi\">\u5b89\u5168\u6027\u8003\u91cf<\/h2>\n<p>\u5728\u8003\u8a66\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u7684\u5b89\u5168\u6027\u81f3\u95dc\u91cd\u8981\u3002\u958b\u767c\u8005\u61c9\u63a1\u53d6\u4ee5\u4e0b\u63aa\u65bd\u4f86\u4fdd\u8b77\u6578\u64da\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528 HTTPS\uff1a<\/strong>\u78ba\u4fdd\u6578\u64da\u5728\u50b3\u8f38\u904e\u7a0b\u4e2d\u4e0d\u88ab\u7aca\u53d6\u3002<\/li>\n<li><strong>\u6578\u64da\u52a0\u5bc6\uff1a<\/strong>\u5c0d\u654f\u611f\u6578\u64da\u9032\u884c\u52a0\u5bc6\u5b58\u5132\u3002<\/li>\n<li><strong>\u5b9a\u671f\u5099\u4efd\uff1a<\/strong>\u5b9a\u671f\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-sqQYGwmLQi\">\u7e3d\u7d50<\/h2>\n<p>\u512a\u5316\u8003\u8a66\u7cfb\u7d71\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u4ee3\u78bc\u662f\u63d0\u5347\u7cfb\u7d71\u6027\u80fd\u548c\u5b89\u5168\u6027\u7684\u95dc\u9375\u3002\u901a\u904e\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u3001\u512a\u5316\u67e5\u8a62\u3001\u4f7f\u7528\u9023\u63a5\u6c60\u4ee5\u53ca\u52a0\u5f37\u5b89\u5168\u6027\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u69cb\u5efa\u51fa\u9ad8\u6548\u4e14\u5b89\u5168\u7684\u8003\u8a66\u7cfb\u7d71\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u512a\u5316\u6280\u5de7\uff0c\u5be6\u73fe\u8003\u8a66\u7cfb\u7d71\u8207\u6578\u64da\u5eab\u7684\u9ad8\u6548\u93c8\u63a5\u4ee3\u78bc\uff0c\u63d0\u5347\u6027\u80fd\u8207\u7a69\u5b9a\u6027\uff0c\u52a9\u529b\u8003\u8a66\u7ba1\u7406\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-195213","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195213","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=195213"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195213\/revisions"}],"predecessor-version":[{"id":195214,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195213\/revisions\/195214"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=195213"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=195213"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=195213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}