1准备工作
首先,确保你的环境中已安装:
- PHP 7.0+
- MySQL/MariaDB
- Web服务器(Apache/Nginx)
2数据库连接代码
// config.php
setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "连接成功";
} catch(PDOException $e) {
echo "连接失败: " . $e->getMessage();
}
?>
3创建测试表
CREATE TABLE users (
id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
username VARCHAR(30) NOT NULL,
email VARCHAR(50) NOT NULL,
reg_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
4实际演示
下面是一个简单的用户注册表单示例:
// register.php
prepare($sql);
$stmt->bindParam(':username', $username);
$stmt->bindParam(':email', $email);
$stmt->execute();
echo "注册成功!";
} catch(PDOException $e) {
echo "Error: " . $e->getMessage();
}
}
?>
5查询数据示例
prepare($sql);
$stmt->execute();
// 设置结果集为关联数组
$result = $stmt->setFetchMode(PDO::FETCH_ASSOC);
foreach($stmt->fetchAll() as $row) {
echo "ID: " . $row["id"]. " - 用户名: " . $row["username"]. " - 邮箱: " . $row["email"]. "
";
}
} catch(PDOException $e) {
echo "Error: " . $e->getMessage();
}
?>
本文来自QSZ学习网站,作者:北边村的富少,转载请注明原文链接:https://www.cnblogs.com/qsz666/p/18061324