Compare the same variable in PHP

Question

I have the same variable where it can assume two values

<?php if($adm1){
      $email = '[email protected]';
}elseif( $adm1){
      $email = '[email protected]';
}

How to compare the two variables as follows, if anything other than these two emails I should issue an alert

I thought as follows:

<?php if($email !='[email protected]' OR $email !='[email protected]'){
        echo 'alerta aqui';

}

But even if the email falls under one of these conditions, it will always return wrong;

The fact is that I wanted to send a warning whenever the email is different from these two options.

Answer 1

Test like this with the operator && comparative:

if ($email !='[email protected]' && $email !='[email protected]') {
    echo 'alerta aqui';
}

Or, using array, so you can insert as many emails as you want:

if (!in_array($email, array('[email protected]', '[email protected]'))) {
    echo 'alerta aqui';
}

I put in the Github for future reference.

I hope it helps.

Answer 2

I think this is what you want:

if ($email !='[email protected]' && $email !='[email protected]') {

This says that both must be different.

or

if (!($email == '[email protected]' || $email == '[email protected]')) {

I put in the Github for future reference.

It says that any one that is equal to these values should NOT execute the block.

I don’t understand what the point is, I don’t understand what you really expect.

Answer 3

A mode I use whenever a variable can assume several values is:

$possibilidades = array(
    '[email protected]',
    '[email protected]',
);

if(in_array($email, $possibilidades)){
    // O valor assumir alguma das possibilidades
}

if(!in_array($email, $possibilidades)){
    // O valor não assumir nenhuma das possibilidades
}

The in_array can be used as a || for various possibilities.
Also facilitating the insertion of new possibilities.

• In your case just use the second type, which has !in_array.