php连接mysql 配置文件

[mysql]
; MySQL连接参数
mysql.default_host = "localhost"
mysql.default_user = "username"
mysql.default_password = "password"
mysql.default_port = "3306"
mysql.default_socket = "/tmp/mysql.sock"

[pdo_mysql]
; PDO MySQL连接参数
pdo_mysql.default_socket = "/tmp/mysql.sock"

<?php
$host = 'localhost';
$user = 'username';
$password = 'password';
$database = 'database_name';

// 创建连接
$conn = new mysqli($host, $user, $password, $database);

// 检查连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}
echo "连接成功";

// 关闭连接
$conn->close();
?>

<?php
$host = 'localhost';
$user = 'username';
$password = 'password';
$database = 'database_name';

try {
    $conn = new PDO("mysql:host=$host;dbname=$database", $user, $password);
    // 设置PDO错误模式为异常
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "连接成功";
} catch (PDOException $e) {
    echo "连接失败: " . $e->getMessage();
}

// 关闭连接
$conn = null;
?>