There are many places used by the form. The data passed by the client must be handled first. If not, you only ask Bodhisattva bless. Below is a handling method implemented by the PHP array, there is a place, please point out, or if I have been attacked, I have to find you.
? >
Of course, if it passes the value through the POST method, replace the $ _GET to $ _POST, or replace it with $ _REQUEST.
Try if you use it.