/**
*获取数据库连接对象PDO
*/
static function connect()
{
if (is_null(self::$pdo)) {
try {
if (defined("DSN")) {
$dsn = DSN;
} else {
$dsn = "mysql:host=" . HOST . ";dbname=" . DBNAME;
}
$pdo = new PDO($dsn, USER, PASS, array(PDO::ATTR_PERSISTENT => true));
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
self::$pdo = $pdo;
return $pdo;
} catch (PDOException $e) {
echo "连接数库失败：" . $e->getMessage();
}
} else {
return self::$pdo;
}
}
/**
* 获取数据库连接对象PDO
*/
public static function connect()
{
if (is_null(self::$pdo)) {
try {
if (defined('DSN')) {
$dsn = DSN;
} else {
$dsn = 'mysql:host=' . HOST . ';dbname=' . DBNAME;
}
$pdo = new PDO($dsn, USER, PASS, array(PDO::ATTR_PERSISTENT => true));
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$stmt = $pdo->prepare('set names ' . DBCHAR);
//设置数据库的默认连接字符集
$stmt->execute();
self::$pdo = $pdo;
return $pdo;
} catch (PDOException $e) {
die('连接失败:' . $e->getMessage() . '请查看config.inc.php文件中是否有误！');
}
} else {
return self::$pdo;
}
}
