{"id":175009,"date":"2024-11-08T01:53:35","date_gmt":"2024-11-07T17:53:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175009\/"},"modified":"2024-11-08T01:53:36","modified_gmt":"2024-11-07T17:53:36","slug":"%e5%a6%82%e4%bd%95%e8%a8%ad%e8%a8%88%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bb%a5%e9%81%bf%e5%85%8d%e6%8f%92%e5%85%a5%e7%9b%b8%e5%90%8c%e7%94%a8%e6%88%b6%e5%90%8d%e7%9a%84%e6%83%85%e6%b3%81%ef%bc%9f-%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175009\/","title":{"rendered":"\u5982\u4f55\u8a2d\u8a08\u6578\u64da\u5eab\u4ee5\u907f\u514d\u63d2\u5165\u76f8\u540c\u7528\u6236\u540d\u7684\u60c5\u6cc1\uff1f (\u6578\u64da\u5eab \u4e0d\u63d2\u5165\u76f8\u540c\u7528\u6236\u540d)"},"content":{"rendered":"

\u5982\u4f55\u8a2d\u8a08\u6578\u64da\u5eab\u4ee5\u907f\u514d\u63d2\u5165\u76f8\u540c\u7528\u6236\u540d\u7684\u60c5\u6cc1\uff1f<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u5b57\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u5b89\u5168\u6027\u81f3\u95dc\u91cd\u8981\u3002\u7279\u5225\u662f\u5728\u7528\u6236\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u907f\u514d\u63d2\u5165\u76f8\u540c\u7528\u6236\u540d\u7684\u60c5\u6cc1\u662f\u8a2d\u8a08\u6578\u64da\u5eab\u6642\u7684\u4e00\u500b\u91cd\u8981\u8003\u91cf\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6709\u6548\u5730\u8a2d\u8a08\u6578\u64da\u5eab\uff0c\u4ee5\u9632\u6b62\u91cd\u8907\u7528\u6236\u540d\u7684\u63d2\u5165\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u5efa\u8b70\u3002<\/p>\n

1. \u4f7f\u7528\u552f\u4e00\u7d04\u675f\uff08UNIQUE Constraint\uff09<\/h2>\n

\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u552f\u4e00\u7d04\u675f\u3002\u9019\u662f\u4e00\u7a2e\u7d04\u675f\u689d\u4ef6\uff0c\u78ba\u4fdd\u67d0\u4e00\u5217\u4e2d\u7684\u6240\u6709\u503c\u90fd\u662f\u552f\u4e00\u7684\u3002\u5728\u7528\u6236\u540d\u7684\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u5728\u7528\u6236\u540d\u5217\u4e0a\u8a2d\u7f6e\u552f\u4e00\u7d04\u675f\uff0c\u9019\u6a23\u7576\u5617\u8a66\u63d2\u5165\u91cd\u8907\u7684\u7528\u6236\u540d\u6642\uff0c\u6578\u64da\u5eab\u5c07\u8fd4\u56de\u932f\u8aa4\u3002<\/p>\n

CREATE TABLE users (\n    id INT PRIMARY KEY AUTO_INCREMENT,\n    username VARCHAR(50) UNIQUE,\n    password VARCHAR(255)\n);\n<\/code><\/pre>\n
\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c`username` \u5217\u88ab\u8a2d\u7f6e\u70ba\u552f\u4e00\uff0c\u9019\u6a23\u5c31\u80fd\u9632\u6b62\u63d2\u5165\u76f8\u540c\u7684\u7528\u6236\u540d\u3002<\/p>\n
2. \u5728\u61c9\u7528\u5c64\u9032\u884c\u6aa2\u67e5<\/h2>\n
\u9664\u4e86\u5728\u6578\u64da\u5eab\u5c64\u9762\u8a2d\u7f6e\u552f\u4e00\u7d04\u675f\u5916\uff0c\u9084\u53ef\u4ee5\u5728\u61c9\u7528\u5c64\u9032\u884c\u6aa2\u67e5\u3002\u5728\u7528\u6236\u8a3b\u518a\u6216\u5275\u5efa\u5e33\u6236\u6642\uff0c\u61c9\u5148\u67e5\u8a62\u6578\u64da\u5eab\u4ee5\u78ba\u8a8d\u7528\u6236\u540d\u662f\u5426\u5df2\u5b58\u5728\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u7528\u6236\u63d0\u4ea4\u8868\u55ae\u4e4b\u524d\uff0c\u53ca\u6642\u7d66\u4e88\u53cd\u994b\u3002<\/p>\n
function isUsernameTaken($username) {\n    $query = \"SELECT COUNT(*) FROM users WHERE username = ?\";\n    $stmt = $db->prepare($query);\n    $stmt->execute([$username]);\n    return $stmt->fetchColumn() > 0;\n}\n<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c`isUsernameTaken` \u51fd\u6578\u6703\u6aa2\u67e5\u7528\u6236\u540d\u662f\u5426\u5df2\u5b58\u5728\uff0c\u4e26\u8fd4\u56de\u5e03\u6797\u503c\u3002<\/p>\n
3. \u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u9032\u884c\u683c\u5f0f\u9a57\u8b49<\/h2>\n
\u5728\u7528\u6236\u8f38\u5165\u7528\u6236\u540d\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u4f86\u9a57\u8b49\u7528\u6236\u540d\u7684\u683c\u5f0f\u3002\u9019\u4e0d\u50c5\u53ef\u4ee5\u9632\u6b62\u91cd\u8907\u7528\u6236\u540d\uff0c\u9084\u53ef\u4ee5\u78ba\u4fdd\u7528\u6236\u540d\u7b26\u5408\u7279\u5b9a\u7684\u898f\u7bc4\uff0c\u4f8b\u5982\u9577\u5ea6\u3001\u5b57\u7b26\u985e\u578b\u7b49\u3002<\/p>\n
if (!preg_match('\/^[a-zA-Z0-9_]{3,20}$\/', $username)) {\n    echo \"\u7528\u6236\u540d\u5fc5\u9808\u662f3\u523020\u500b\u5b57\u6bcd\u6216\u6578\u5b57\uff0c\u4e14\u4e0d\u80fd\u5305\u542b\u7279\u6b8a\u5b57\u7b26\u3002\";\n}\n<\/code><\/pre>\n
4. \u63d0\u4f9b\u7528\u6236\u540d\u5efa\u8b70<\/h2>\n
\u5728\u7528\u6236\u8a3b\u518a\u904e\u7a0b\u4e2d\uff0c\u63d0\u4f9b\u7528\u6236\u540d\u5efa\u8b70\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u91cd\u8907\u7528\u6236\u540d\u7684\u60c5\u6cc1\u3002\u7576\u7528\u6236\u8f38\u5165\u7684\u7528\u6236\u540d\u5df2\u88ab\u4f7f\u7528\u6642\uff0c\u53ef\u4ee5\u81ea\u52d5\u751f\u6210\u4e00\u4e9b\u53ef\u7528\u7684\u66ff\u4ee3\u9078\u9805\uff0c\u4e26\u986f\u793a\u7d66\u7528\u6236\u3002<\/p>\n
function suggestUsernames($baseUsername) {\n    $suggestions = [];\n    for ($i = 1; $i <= 5; $i++) {\n        $suggestions[] = $baseUsername . $i;\n    }\n    return $suggestions;\n}\n<\/code><\/pre>\n
5. \u5b9a\u671f\u6e05\u7406\u548c\u7dad\u8b77\u6578\u64da\u5eab<\/h2>\n
\u5373\u4f7f\u5728\u8a2d\u8a08\u968e\u6bb5\u63a1\u53d6\u4e86\u9810\u9632\u63aa\u65bd\uff0c\u6578\u64da\u5eab\u7684\u7dad\u8b77\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5b9a\u671f\u6aa2\u67e5\u6578\u64da\u5eab\u4e2d\u7684\u7528\u6236\u540d\uff0c\u78ba\u4fdd\u6c92\u6709\u91cd\u8907\u7684\u689d\u76ee\uff0c\u4e26\u53ca\u6642\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4fdd\u6301\u6578\u64da\u5eab\u7684\u5065\u5eb7\u72c0\u614b\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u8a2d\u8a08\u4e00\u500b\u80fd\u5920\u6709\u6548\u907f\u514d\u63d2\u5165\u76f8\u540c\u7528\u6236\u540d\u7684\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u9700\u8981\u7d50\u5408\u591a\u7a2e\u6280\u8853\u548c\u65b9\u6cd5\u3002\u901a\u904e\u4f7f\u7528\u552f\u4e00\u7d04\u675f\u3001\u5728\u61c9\u7528\u5c64\u9032\u884c\u6aa2\u67e5\u3001\u683c\u5f0f\u9a57\u8b49\u3001\u63d0\u4f9b\u7528\u6236\u540d\u5efa\u8b70\u4ee5\u53ca\u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab\uff0c\u53ef\u4ee5\u5927\u5927\u964d\u4f4e\u91cd\u8907\u7528\u6236\u540d\u7684\u98a8\u96aa\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u5347\u7528\u6236\u9ad4\u9a57\uff0c\u9084\u80fd\u589e\u5f37\u7cfb\u7d71\u7684\u5b89\u5168\u6027\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u7a0b\u5e8f\u90e8\u7f72\uff0c\u6211\u5011\u7684 \u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u8a2d\u8a08\u6578\u64da\u5eab\u4ee5\u9632\u6b62\u63d2\u5165\u76f8\u540c\u7528\u6236\u540d\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u548c\u7528\u6236\u552f\u4e00\u6027\uff0c\u63d0\u5347\u7cfb\u7d71\u5b89\u5168\u6027\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-175009","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175009","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=175009"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175009\/revisions"}],"predecessor-version":[{"id":175010,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175009\/revisions\/175010"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175009"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175009"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175009"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}