Regex?

[Jamesking56]

Hi guys!I am designing a register form and I want to make it so that only letters (both cases), number and -=?!@:., are allowed.How can I check this in PHP?

[jeffman]

Try this:if (preg_match(/[^a-zA-Z0-9\-=?!@:.,]/, $str) ) {// bad name}