{
  ["MangoData_SerializeVersion"] = 0.1;
  ["time"] = "23:31";
}


------------

preg_match_all('/\["time"\] = "[0-9]+:[0-9]{1,2}";/',$file,$matches,PREG_SET_ORDER)


------------
result:

Array ( [0] => Array ( [0] => ["time"] = "23:31"; ) )