{"id":152257,"date":"2024-11-01T21:25:24","date_gmt":"2024-11-01T13:25:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152257\/"},"modified":"2024-11-01T21:25:25","modified_gmt":"2024-11-01T13:25:25","slug":"%e4%b8%8d%e8%a6%81%e5%86%8d%e7%94%a8where-11%e4%ba%86%ef%bc%81%e6%9c%89%e6%9b%b4%e5%a5%bd%e7%9a%84%e5%af%ab%e6%b3%95%ef%bc%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152257\/","title":{"rendered":"\u4e0d\u8981\u518d\u7528Where 1=1\u4e86\uff01\u6709\u66f4\u597d\u7684\u5beb\u6cd5\uff01"},"content":{"rendered":"<h1 id=\"%e4%b8%8d%e8%a6%81%e5%86%8d%e7%94%a8where-11%e4%ba%86%ef%bc%81%e6%9c%89%e6%9b%b4%e5%a5%bd%e7%9a%84%e5%af%ab%e6%b3%95%ef%bc%81-YjWgFFiaAz\">\u4e0d\u8981\u518d\u7528Where 1=1\u4e86\uff01\u6709\u66f4\u597d\u7684\u5beb\u6cd5\uff01<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u67e5\u8a62\u4e2d\uff0c<code>WHERE 1=1<\/code> \u662f\u4e00\u7a2e\u5e38\u898b\u7684\u5beb\u6cd5\uff0c\u5c24\u5176\u662f\u5728\u52d5\u614b\u751f\u6210 SQL \u67e5\u8a62\u6642\u3002\u9019\u7a2e\u5beb\u6cd5\u7684\u4e3b\u8981\u76ee\u7684\u662f\u70ba\u4e86\u65b9\u4fbf\u5730\u6dfb\u52a0\u591a\u500b\u67e5\u8a62\u689d\u4ef6\uff0c\u7136\u800c\uff0c\u9019\u7a2e\u505a\u6cd5\u5728\u6027\u80fd\u548c\u53ef\u8b80\u6027\u4e0a\u90fd\u5b58\u5728\u4e00\u4e9b\u554f\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u70ba\u4f55\u4e0d\u61c9\u518d\u4f7f\u7528 <code>WHERE 1=1<\/code>\uff0c\u4e26\u63d0\u4f9b\u66f4\u597d\u7684\u66ff\u4ee3\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e4%b8%8d%e6%87%89%e4%bd%bf%e7%94%a8-where-11-YjWgFFiaAz\">\u70ba\u4ec0\u9ebc\u4e0d\u61c9\u4f7f\u7528 WHERE 1=1<\/h2>\n<p>\u4f7f\u7528 <code>WHERE 1=1<\/code> \u7684\u4e3b\u8981\u539f\u56e0\u662f\u70ba\u4e86\u7c21\u5316\u67e5\u8a62\u689d\u4ef6\u7684\u6dfb\u52a0\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u6839\u64da\u7528\u6236\u8f38\u5165\u52d5\u614b\u751f\u6210\u67e5\u8a62\u6642\u3002\u7136\u800c\uff0c\u9019\u7a2e\u5beb\u6cd5\u6709\u5e7e\u500b\u7f3a\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u6027\u80fd\u554f\u984c\uff1a<\/strong>\u96d6\u7136 <code>1=1<\/code> \u5728\u908f\u8f2f\u4e0a\u662f\u6c38\u9060\u70ba\u771f\u7684\uff0c\u4f46\u5728\u67d0\u4e9b\u8cc7\u6599\u5eab\u7cfb\u7d71\u4e2d\uff0c\u9019\u6a23\u7684\u689d\u4ef6\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u7684\u512a\u5316\u3002\u8cc7\u6599\u5eab\u5728\u57f7\u884c\u67e5\u8a62\u6642\uff0c\u53ef\u80fd\u6703\u82b1\u8cbb\u984d\u5916\u7684\u6642\u9593\u4f86\u89e3\u6790\u9019\u500b\u689d\u4ef6\u3002<\/li>\n<li><strong>\u53ef\u8b80\u6027\u5dee\uff1a<\/strong>\u5c0d\u65bc\u5176\u4ed6\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u770b\u5230 <code>WHERE 1=1<\/code> \u53ef\u80fd\u6703\u611f\u5230\u56f0\u60d1\uff0c\u56e0\u70ba\u9019\u4e26\u4e0d\u63d0\u4f9b\u4efb\u4f55\u6709\u610f\u7fa9\u7684\u4e0a\u4e0b\u6587\u3002\u9019\u6703\u4f7f\u5f97\u7dad\u8b77\u4ee3\u78bc\u8b8a\u5f97\u66f4\u52a0\u56f0\u96e3\u3002<\/li>\n<li><strong>\u4e0d\u5fc5\u8981\u7684\u8907\u96dc\u6027\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528 <code>WHERE 1=1<\/code> \u6703\u5c0e\u81f4\u67e5\u8a62\u8b8a\u5f97\u4e0d\u5fc5\u8981\u5730\u8907\u96dc\uff0c\u7279\u5225\u662f\u7576\u6709\u591a\u500b\u689d\u4ef6\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9b%b4%e5%a5%bd%e7%9a%84%e5%af%ab%e6%b3%95-YjWgFFiaAz\">\u66f4\u597d\u7684\u5beb\u6cd5<\/h2>\n<p>\u90a3\u9ebc\uff0c\u6709\u54ea\u4e9b\u66f4\u597d\u7684\u5beb\u6cd5\u5462\uff1f\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u66ff\u4ee3\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e6%a2%9d%e4%bb%b6%e6%8b%bc%e6%8e%a5-YjWgFFiaAz\">1. \u4f7f\u7528\u689d\u4ef6\u62fc\u63a5<\/h3>\n<p>\u5728\u52d5\u614b\u751f\u6210 SQL \u67e5\u8a62\u6642\uff0c\u53ef\u4ee5\u6839\u64da\u689d\u4ef6\u4f86\u62fc\u63a5\u67e5\u8a62\u8a9e\u53e5\uff0c\u800c\u4e0d\u662f\u4f7f\u7528 <code>WHERE 1=1<\/code>\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>\n$sql = \"SELECT * FROM users WHERE 1=1\";\nif (!empty($name)) {\n    $sql .= \" AND name = '\" . $name . \"'\";\n}\nif (!empty($age)) {\n    $sql .= \" AND age = \" . $age;\n}\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u6539\u5beb\u70ba\uff1a<\/p>\n<pre><code>\n$sql = \"SELECT * FROM users WHERE 1=1\";\n$conditions = [];\nif (!empty($name)) {\n    $conditions[] = \"name = '\" . $name . \"'\";\n}\nif (!empty($age)) {\n    $conditions[] = \"age = \" . $age;\n}\nif (count($conditions) &gt; 0) {\n    $sql .= \" AND \" . implode(\" AND \", $conditions);\n}\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-orm-%e6%a1%86%e6%9e%b6-YjWgFFiaAz\">2. \u4f7f\u7528 ORM \u6846\u67b6<\/h3>\n<p>\u5982\u679c\u4f7f\u7528\u7684\u662f ORM\uff08\u7269\u4ef6\u95dc\u806f\u6620\u5c04\uff09\u6846\u67b6\uff0c\u5247\u53ef\u4ee5\u5229\u7528\u5176\u63d0\u4f9b\u7684\u67e5\u8a62\u69cb\u5efa\u5668\u4f86\u7c21\u5316\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u5728 Laravel \u4e2d\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>\n$query = User::query();\nif (!empty($name)) {\n    $query-&gt;where('name', $name);\n}\nif (!empty($age)) {\n    $query-&gt;where('age', $age);\n}\n$users = $query-&gt;get();\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e9%a0%90%e8%99%95%e7%90%86%e8%aa%9e%e5%8f%a5-YjWgFFiaAz\">3. \u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5<\/h3>\n<p>\u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\u4e0d\u50c5\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u9084\u80fd\u9632\u6b62 SQL \u6ce8\u5165\u653b\u64ca\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 PDO \u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n$sql = \"SELECT * FROM users WHERE 1=1\";\n$params = [];\nif (!empty($name)) {\n    $sql .= \" AND name = :name\";\n    $params[':name'] = $name;\n}\nif (!empty($age)) {\n    $sql .= \" AND age = :age\";\n    $params[':age'] = $age;\n}\n$stmt = $pdo-&gt;prepare($sql);\n$stmt-&gt;execute($params);\n$users = $stmt-&gt;fetchAll();\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-YjWgFFiaAz\">\u7e3d\u7d50<\/h2>\n<p>\u96d6\u7136 <code>WHERE 1=1<\/code> \u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u770b\u4f3c\u65b9\u4fbf\uff0c\u4f46\u5176\u5be6\u5728\u6027\u80fd\u548c\u53ef\u8b80\u6027\u4e0a\u90fd\u5b58\u5728\u554f\u984c\u3002\u901a\u904e\u4f7f\u7528\u689d\u4ef6\u62fc\u63a5\u3001ORM \u6846\u67b6\u6216\u9810\u8655\u7406\u8a9e\u53e5\uff0c\u6211\u5011\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u69cb\u5efa SQL \u67e5\u8a62\uff0c\u4e26\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u7dad\u8b77\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u548c\u5b89\u5168\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u67e5\u8a62\u65b9\u5f0f\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u66f4\u6709\u6548\u7684SQL\u5beb\u6cd5\uff0c\u64fa\u812b\u50b3\u7d71\u7684&#8221;WHERE 1=1&#8243;\uff01\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u7c21\u5316\u4ee3\u78bc\uff0c\u8b93\u4f60\u7684\u6578\u64da\u64cd\u4f5c\u66f4\u6d41\u66a2\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-152257","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152257","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=152257"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152257\/revisions"}],"predecessor-version":[{"id":152258,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152257\/revisions\/152258"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152257"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}