How to enable A-Z CHARS space in register page ?

[BANDIT007]

Hi,
i want to know how to enable a-z , A-Z characters ,space , while registering in wapdesire. Kindly help me

[kei_ki7]

$string = preg_replace('/[^a-zA-Z0-9 ]/', '', $string);

[ori]

that wont work the way u want as itll take out any non a-z chars u want to use a function like this


function UserChars($text)
{
if (!preg_match('/[^a-z]/i',$text)) return true;
else return false;
}

if(!userchars($_GET['username'])){
echo "you can only use A-Z chars";
}else{

}

something like that will work