Use of PHP Comparison Operators is comparing two values (number or string).

Operator Description
== Is equal to
=== Identical
!= Is not equal to
<> Is not equal to
!== Is Identical
> Greater than
< Less than
>= Greater than or equal to
<= Less than or equal to
Example:
<?php

$a = 20;
$b = 30;
      
if( $a == $b ) {
  echo "a and b is equal";
}else {
  echo "a is not equal to b";
}

?>