Question

I’m trying to validate my username as an email address, however PHP isn’t letting me do this! what’s wrong here?

//This checks if all the fields are filled or not
if (!empty($_POST['username']) || 
!empty($_POST['password']) ||
!empty($_POST['repassword']) || 
!empty($_POST['user_firstname']) ||
!empty($_POST['user_lastname']) ){
header('Location: register.php?msg=You didn\'t complete all of the required fields');
}

if (filter_var($_POST['username'], FILTER_VALIDATE_EMAIL) === false){
$errors[] = 'The email address you entered is not valid';
}

here is the form i used in register.php

<form action="createuser.php" method="post" name="registration_form" id="registration_form">
<label>Email</label>
<input name="username" type="text" id="username" size="50" maxlength="50" /><br />

Answer 1

Typo?

header('Location: register.php?msg=You didn't complete all of the required fields');
                                           ^---unescaped embedded quote

Your empty logic is also faulty. You’re checking if any fields are NOT empty (e.g. filled out) and then complaining that they’re not filled out. remove the ! to invert the logic.

if (empty(...) || empty(...) || etc...)