Email Address Checker
This function check if an e-mail address is valid or not.
function valid_email($email) { return preg_match('/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/', $email); } echo valid_email('test@test.com');
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