{"id":96618,"date":"2024-10-20T10:57:19","date_gmt":"2024-10-20T02:57:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96618\/"},"modified":"2024-10-20T10:57:20","modified_gmt":"2024-10-20T02:57:20","slug":"php%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7%e4%b9%8b%e7%8d%b2%e5%8f%96%e6%9c%80%e5%be%8c%e4%b8%80%e6%a2%9d%e6%95%b8%e6%93%9a-php%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%80%e5%be%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96618\/","title":{"rendered":"php\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\u4e4b\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u6578\u64da (php\u6578\u64da\u5eab\u6700\u5f8c\u4e00\u689d)"},"content":{"rendered":"

PHP\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\u4e4b\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u6578\u64da<\/h1>\n

\u5728\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u6578\u64da\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u7528\u65bc\u986f\u793a\u6700\u65b0\u7684\u7528\u6236\u8a3b\u518a\u4fe1\u606f\uff0c\u9084\u662f\u7372\u53d6\u6700\u65b0\u7684\u4ea4\u6613\u8a18\u9304\uff0c\u638c\u63e1\u5982\u4f55\u6709\u6548\u5730\u5f9e\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6700\u5f8c\u4e00\u689d\u6578\u64da\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5e7e\u7a2e\u5728PHP\u4e2d\u7372\u53d6\u6578\u64da\u5eab\u6700\u5f8c\u4e00\u689d\u6578\u64da\u7684\u6280\u5de7\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n

\u4f7f\u7528SQL\u67e5\u8a62\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u6578\u64da<\/h2>\n

\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u4f7f\u7528SQL\u67e5\u8a62\u8a9e\u53e5\u3002\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u6578\u64da\u8868\uff0c\u4e26\u4e14\u5e0c\u671b\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u7528\u6236\u6578\u64da\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n

SELECT * FROM users ORDER BY id DESC LIMIT 1;<\/code><\/pre>\n
\u9019\u689d\u8a9e\u53e5\u7684\u610f\u601d\u662f\u5f9e\u201cusers\u201d\u8868\u4e2d\u9078\u64c7\u6240\u6709\u5b57\u6bb5\uff0c\u4e26\u6839\u64da\u201cid\u201d\u5b57\u6bb5\u964d\u5e8f\u6392\u5217\uff0c\u7136\u5f8c\u9650\u5236\u7d50\u679c\u70ba1\u689d\u3002\u9019\u6a23\u5c31\u80fd\u7372\u53d6\u5230\u201cusers\u201d\u8868\u4e2d\u7684\u6700\u5f8c\u4e00\u689d\u6578\u64da\u3002<\/p>\n
\u5728PHP\u4e2d\u57f7\u884cSQL\u67e5\u8a62<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5728PHP\u4e2d\u57f7\u884c\u9019\u689dSQL\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n
<?php\n\/\/ \u9023\u63a5\u5230\u6578\u64da\u5eab\n$servername = \"localhost\";\n$username = \"username\";\n$password = \"password\";\n$dbname = \"database_name\";\n\n$conn = new mysqli($servername, $username, $password, $dbname);\n\n\/\/ \u6aa2\u67e5\u9023\u63a5\nif ($conn->connect_error) {\n    die(\"\u9023\u63a5\u5931\u6557: \" . $conn->connect_error);\n}\n\n\/\/ \u57f7\u884c\u67e5\u8a62\n$sql = \"SELECT * FROM users ORDER BY id DESC LIMIT 1\";\n$result = $conn->query($sql);\n\nif ($result->num_rows > 0) {\n    \/\/ \u8f38\u51fa\u6700\u5f8c\u4e00\u689d\u6578\u64da\n    while($row = $result->fetch_assoc()) {\n        echo \"\u7528\u6236ID: \" . $row[\"id\"]. \" - \u59d3\u540d: \" . $row[\"name\"]. \" - \u96fb\u5b50\u90f5\u4ef6: \" . $row[\"email\"]. \"<br>\";\n    }\n} else {\n    echo \"\u6c92\u6709\u6578\u64da\";\n}\n\n$conn->close();\n?><\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u7136\u5f8c\u57f7\u884cSQL\u67e5\u8a62\u4ee5\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u7528\u6236\u6578\u64da\u3002\u63a5\u8457\uff0c\u6211\u5011\u6aa2\u67e5\u7d50\u679c\u96c6\u662f\u5426\u6709\u6578\u64da\uff0c\u5982\u679c\u6709\uff0c\u5247\u8f38\u51fa\u7528\u6236\u7684ID\u3001\u59d3\u540d\u548c\u96fb\u5b50\u90f5\u4ef6\u3002<\/p>\n
\u4f7f\u7528PDO\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u6578\u64da<\/h2>\n
\u9664\u4e86\u4f7f\u7528mysqli\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528PDO\uff08PHP Data Objects\uff09\u4f86\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002PDO\u63d0\u4f9b\u4e86\u4e00\u500b\u66f4\u9748\u6d3b\u7684\u63a5\u53e3\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PDO\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n
<?php\n\/\/ \u9023\u63a5\u5230\u6578\u64da\u5eab\n$dsn = \"mysql:host=localhost;dbname=database_name\";\n$username = \"username\";\n$password = \"password\";\n\ntry {\n    $pdo = new PDO($dsn, $username, $password);\n    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n\n    \/\/ \u57f7\u884c\u67e5\u8a62\n    $stmt = $pdo->query(\"SELECT * FROM users ORDER BY id DESC LIMIT 1\");\n    $user = $stmt->fetch(PDO::FETCH_ASSOC);\n\n    if ($user) {\n        echo \"\u7528\u6236ID: \" . $user[\"id\"]. \" - \u59d3\u540d: \" . $user[\"name\"]. \" - \u96fb\u5b50\u90f5\u4ef6: \" . $user[\"email\"]. \"<br>\";\n    } else {\n        echo \"\u6c92\u6709\u6578\u64da\";\n    }\n} catch (PDOException $e) {\n    echo \"\u932f\u8aa4: \" . $e->getMessage();\n}\n\n$pdo = null;\n?><\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528PDO\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u7136\u5f8c\u57f7\u884c\u67e5\u8a62\u4ee5\u7372\u53d6\u6700\u5f8c\u4e00\u689d\u7528\u6236\u6578\u64da\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u597d\u8655\u5728\u65bc\u5b83\u80fd\u5920\u66f4\u597d\u5730\u8655\u7406\u932f\u8aa4\uff0c\u4e26\u4e14\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
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\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u7db2\u7ad9\u6216\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684 \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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