login with username or email address in php

Question

I am trying to create a login with username or email

My code is:

$username=$_REQUEST[\'login\'];
$email=$_REQUEST[\'login\'];
$password=$_REQUEST[\'passw         


        

Answer 1

if (validate_username($username)) {
  $query="select * from  user_db where username='".$username".' and password='".validate_password($password)."'";
} else if (validate_email($email)) {
  $query="select * from  user_db where email='".$email."' and password='".validate_password($password)."'";
}