Why can't I get PHP form variables?

If you are using PHP4.2 or later, please refer to here. Set register_globalson or add the following code: functions (function_exists (ini_get) {$ onoffini_get (register_globals);} else {$ region (regist if you use PHP4.2 or later, please refer to here.
Set register_globals = on or
Add the following code:
// Allow script to work with registerglobals off
If (function_exists ('ini _ get ')){
$ Onoff = ini_get ('register _ globals ');
} Else {
$ Onoff = get_resource_var ('register _ globals ');
}
If ($ onoff! = 1 ){
@ Extract ($ HTTP_SERVER_VARS, EXTR_SKIP );
@ Extract ($ HTTP_COOKIE_VARS, EXTR_SKIP );
@ Extract ($ HTTP_POST_FILES, EXTR_SKIP );
@ Extract ($ HTTP_POST_VARS, EXTR_SKIP );
@ Extract ($ HTTP_GET_VARS, EXTR_SKIP );
@ Extract ($ HTTP_ENV_VARS, EXTR_SKIP );
}

For details, refer to here:
Http://www.21php.com/tutorial/tutorial.php? Tid = 21

For more information, see:
Http://www.21php.com/forums/showthread.php? S = & postid = 588 # post588
Http://www.21php.com/forums/showthread.php? S = & postid = 400 # post400