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在PHP中修改MySQL数据,可以使用MySQLi或PDO扩展连接到数据库,并执行UPDATE语句来更新数据。以下是一个简单的示例:
使用MySQLi扩展:
$servername = "localhost"; $username = "your_username"; $password = "your_password"; $dbname = "your_dbname"; // 创建连接 $conn = new mysqli($servername, $username, $password, $dbname); // 检查连接 if ($conn->connect_error) { die("连接失败: " . $conn->connect_error); } // 更新数据 $sql = "UPDATE your_table SET column1='new_value' WHERE id=1"; if ($conn->query($sql) === TRUE) { echo "数据更新成功"; } else { echo "数据更新失败: " . $conn->error; } $conn->close(); ?>
使用PDO扩展:
$servername = "localhost"; $username = "your_username"; $password = "your_password"; $dbname = "your_dbname"; try { $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password); $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $sql = "UPDATE your_table SET column1='new_value' WHERE id=1"; $conn->exec($sql); echo "数据更新成功"; } catch(PDOException $e) { echo "数据更新失败: " . $e->getMessage(); } $conn = null; ?>
在上述示例中,将your_table替换为要更新数据的表名,column1替换为要更新的列名,new_value替换为要设置的新值,以及WHERE条件来指定要更新的行。