array(4) {
  [0]=>
  int(8)
  [1]=>
  string(47) "session_start(): Redis connection not available"
  [2]=>
  string(31) "/usr/share/php/Zend/Session.php"
  [3]=>
  int(469)
}
array(4) {
  [0]=>
  int(2)
  [1]=>
  string(47) "session_start(): Redis connection not available"
  [2]=>
  string(31) "/usr/share/php/Zend/Session.php"
  [3]=>
  int(469)
}
array(4) {
  [0]=>
  int(2)
  [1]=>
  string(72) "session_start(): Failed to read session data: redis (path: /home/iz/tmp)"
  [2]=>
  string(31) "/usr/share/php/Zend/Session.php"
  [3]=>
  int(469)
}