/**
* 获取数据库连接对象PDO
*/
public static function connect()
{
if (is_null(self::$pdo_connect)) {
try {
$dsn = "mysql:host=" . C('DB_HOST') . ";dbname=" . C('DB_NAME');
$pdo = new PDO($dsn, C('DB_USER'), C('DB_PWD'), array(PDO::ATTR_PERSISTENT => true));
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
return self::$pdo_connect = $pdo;
} catch (PDOException $e) {
die("连接数库失败：" . $e->getMessage());
}
} else {
return self::$pdo_connect;
}
}
