php读取mysql配置信息

[mysql]
host = localhost
username = myuser
password = mypass
database = mydb

$config = parse_ini_file('config.ini', true);
$host = $config['mysql']['host'];
$username = $config['mysql']['username'];
$password = $config['mysql']['password'];
$database = $config['mysql']['database'];

// 使用MySQLi连接数据库
$conn = new mysqli($host, $username, $password, $database);

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

$dbConfig = [
    'host' => 'localhost',
    'username' => 'myuser',
    'password' => 'mypass',
    'database' => 'mydb'
];

$conn = new mysqli($dbConfig['host'], $dbConfig['username'], $dbConfig['password'], $dbConfig['database']);

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

export DB_HOST=localhost
export DB_USER=myuser
export DB_PASS=mypass
export DB_NAME=mydb

$host = getenv('DB_HOST');
$username = getenv('DB_USER');
$password = getenv('DB_PASS');
$database = getenv('DB_NAME');

$conn = new mysqli($host, $username, $password, $database);

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