{"id":96514,"date":"2024-10-20T10:05:17","date_gmt":"2024-10-20T02:05:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96514\/"},"modified":"2024-10-20T10:05:18","modified_gmt":"2024-10-20T02:05:18","slug":"php%e6%8a%80%e5%b7%a7%e5%88%86%e4%ba%ab%ef%bc%9a%e8%bc%95%e9%ac%86%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a7%e5%ae%b9-php-%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e5%85%a7%e5%ae%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96514\/","title":{"rendered":"PHP\u6280\u5de7\u5206\u4eab\uff1a\u8f15\u9b06\u7372\u53d6\u6578\u64da\u5eab\u5167\u5bb9 (php \u7372\u53d6\u6578\u64da\u5eab\u5167\u5bb9)"},"content":{"rendered":"

PHP\u6280\u5de7\u5206\u4eab\uff1a\u8f15\u9b06\u7372\u53d6\u6578\u64da\u5eab\u5167\u5bb9<\/h1>\n

\u5728\u7576\u4eca\u7684\u7db2\u7d61\u958b\u767c\u4e2d\uff0cPHP\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u4f3a\u670d\u5668\u7aef\u8173\u672c\u8a9e\u8a00\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u5efa\u7acb\u52d5\u614b\u7db2\u7ad9\u9084\u662f\u958b\u767c\u61c9\u7528\u7a0b\u5e8f\uff0c\u7372\u53d6\u6578\u64da\u5eab\u5167\u5bb9\u90fd\u662f\u4e00\u500b\u57fa\u672c\u800c\u91cd\u8981\u7684\u4efb\u52d9\u3002\u672c\u6587\u5c07\u5206\u4eab\u4e00\u4e9bPHP\u6280\u5de7\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u8f15\u9b06\u7372\u53d6\u6578\u64da\u5eab\u5167\u5bb9\u3002<\/p>\n

1. \u9023\u63a5\u6578\u64da\u5eab<\/h2>\n

\u5728\u958b\u59cb\u7372\u53d6\u6578\u64da\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u9023\u63a5\u5230\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528MySQLi\u64f4\u5c55\u9023\u63a5\u6578\u64da\u5eab\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n

\n$servername = \"localhost\";\n$username = \"username\";\n$password = \"password\";\n$dbname = \"database_name\";\n\n\/\/ \u5275\u5efa\u9023\u63a5\n$conn = new mysqli($servername, $username, $password, $dbname);\n\n\/\/ \u6aa2\u67e5\u9023\u63a5\nif ($conn->connect_error) {\n    die(\"\u9023\u63a5\u5931\u6557: \" . $conn->connect_error);\n}\n<\/code><\/pre>\n
2. \u7372\u53d6\u6578\u64da<\/h2>\n
\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u7372\u53d6\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u6578\u64da\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n
\n$sql = \"SELECT id, name, email FROM users\";\n$result = $conn->query($sql);\n\nif ($result->num_rows > 0) {\n    \/\/ \u8f38\u51fa\u6bcf\u884c\u6578\u64da\n    while($row = $result->fetch_assoc()) {\n        echo \"id: \" . $row[\"id\"]. \" - Name: \" . $row[\"name\"]. \" - Email: \" . $row[\"email\"]. \"
\";\n    }\n} else {\n    echo \"0 \u7d50\u679c\";\n}\n<\/code><\/pre>\n
3. \u4f7f\u7528PDO\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c<\/h2>\n
\u9664\u4e86MySQLi\uff0cPHP\u9084\u652f\u6301PDO\uff08PHP Data Objects\uff09\uff0c\u9019\u662f\u4e00\u500b\u66f4\u9748\u6d3b\u7684\u6578\u64da\u5eab\u8a2a\u554f\u5c64\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PDO\u9023\u63a5\u6578\u64da\u5eab\u4e26\u7372\u53d6\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n
\ntry {\n    $pdo = new PDO(\"mysql:host=$servername;dbname=$dbname\", $username, $password);\n    \/\/ \u8a2d\u7f6e\u932f\u8aa4\u6a21\u5f0f\u70ba\u7570\u5e38\n    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n\n    $stmt = $pdo->prepare(\"SELECT id, name, email FROM users\");\n    $stmt->execute();\n\n    \/\/ \u8a2d\u7f6e\u7d50\u679c\u70ba\u95dc\u806f\u6578\u7d44\n    $result = $stmt->fetchAll(PDO::FETCH_ASSOC);\n    foreach ($result as $row) {\n        echo \"id: \" . $row[\"id\"]. \" - Name: \" . $row[\"name\"]. \" - Email: \" . $row[\"email\"]. \"
\";\n    }\n} catch(PDOException $e) {\n    echo \"\u932f\u8aa4: \" . $e->getMessage();\n}\n<\/code><\/pre>\n
4. \u5b89\u5168\u6027\u8003\u91cf<\/h2>\n
\u5728\u7372\u53d6\u6578\u64da\u6642\uff0c\u5b89\u5168\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\u53ef\u4ee5\u6709\u6548\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PDO\u7684\u9810\u8655\u7406\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n
\n$stmt = $pdo->prepare(\"SELECT id, name, email FROM users WHERE id = :id\");\n$stmt->bindParam(':id', $id);\n$id = 1; \/\/ \u5047\u8a2d\u6211\u5011\u8981\u67e5\u8a62id\u70ba1\u7684\u7528\u6236\n$stmt->execute();\n$result = $stmt->fetchAll(PDO::FETCH_ASSOC);\n<\/code><\/pre>\n
5. \u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n
\u5b8c\u6210\u6578\u64da\u64cd\u4f5c\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\uff1a<\/p>\n
\n$conn->close(); \/\/ MySQLi\n$pdo = null; \/\/ PDO\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528PHP\u8f15\u9b06\u7372\u53d6\u6578\u64da\u5eab\u5167\u5bb9\uff0c\u5305\u62ec\u9023\u63a5\u6578\u64da\u5eab\u3001\u57f7\u884c\u67e5\u8a62\u3001\u4f7f\u7528PDO\u9032\u884c\u64cd\u4f5c\u4ee5\u53ca\u5b89\u5168\u6027\u8003\u91cf\u3002\u9019\u4e9b\u6280\u5de7\u5c0d\u65bc\u958b\u767c\u8005\u5728\u65e5\u5e38\u5de5\u4f5c\u4e2d\u975e\u5e38\u6709\u5e6b\u52a9\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684PHP\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5be6\u7528\u7684PHP\u6280\u5de7\uff0c\u8f15\u9b06\u7372\u53d6\u6578\u64da\u5eab\u5167\u5bb9\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\uff0c\u8b93\u6578\u64da\u64cd\u4f5c\u8b8a\u5f97\u7c21\u55ae\u5feb\u6377\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-96514","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96514","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=96514"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96514\/revisions"}],"predecessor-version":[{"id":96515,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96514\/revisions\/96515"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}