Equality Check in PHP

To check two values for equality, the operator == is used. Let's check for example, that the variable $test is equal to 0:

php<?php
  $test = 0; // let the variable value be 0
  
  if ($test == 0) {
    echo '+++'; // this will work, because the variable is equal to 0
  } else {
    echo '---';
  }
?>

Let's change the value of the variable so that the condition is not met:

php<?php
  $test = 1; // let the variable value be 1
  
  if ($test == 0) {
    echo '+++';
  } else {
    echo '---'; // this will work, because the variable is NOT equal to 0
  }
?>