Make case-insensitive key of $_GET & $_POST
#How to use 1.GetPost::ConvertALLKeyToLOWER();
2.GetPost::SearchGET("val");//val is key which you want to search data
3.GetPost::ConvertALLKeyToUPPER();
4.GetPost::SearchPOST("val");//val is key which you want to search data
5.GetPost::ConvertManual("upper","lower");