'PDOException::2002 in "/var/www/data/smartflash.ru/www/sys/lib/DB.php" on line 14'

'SQLSTATE[HY000] [2002] Can\'t connect to local MySQL server through socket \'/var/run/mysqld/mysqld.sock\' (2)'

array (
  0 => 
  array (
    'file' => '/var/www/data/smartflash.ru/www/sys/lib/DB.php',
    'line' => 14,
    'function' => '__construct',
    'class' => 'PDO',
    'type' => '->',
    'args' => 
    array (
      0 => 'mysql:host=localhost;dbname=smartflash',
      1 => 'alz',
      2 => 'coicite7uga',
      3 => NULL,
    ),
  ),
  1 => 
  array (
    'file' => '/var/www/data/smartflash.ru/www/index.php',
    'line' => 13,
    'function' => '__construct',
    'class' => 'DB',
    'type' => '->',
    'args' => 
    array (
      0 => 'mysql:host=localhost;dbname=smartflash',
      1 => 'alz',
      2 => 'coicite7uga',
    ),
  ),
)