/*
Function name: CHECK FOR SYMBOLS
Description: return TRUE if matches. ( True = OK ) ( False = NOT OK  )
*/
function check_for_symbols($string){
$len=strlen($string);
$alowed_chars="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
for($i=0;$i<$len;$i++)if(!strstr($alowed_chars,$string[$i]))return TRUE;
return FALSE;

}

@@//replace with
/*
Function name: CHECK FOR SYMBOLS
Description: return TRUE if matches. ( True = OK ) ( False = NOT OK  )
*/
function check_for_symbols($string){
$len=strlen($string);
$allowed_chars="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
return !in_array($string, $allowed_chars) ? FALSE : TRUE;

}