PHP - مثال - عملگر مقایسه ای

<!DOCTYPE html>
<html>
<body>

<?php
$x = 5;  
$y = 10;

echo ($x <=> $y); // returns -1 because $x is less than $y
echo "<br>";

$x = 10;  
$y = 10;

echo ($x <=> $y); // returns 0 because values are equal
echo "<br>";

$x = 15;  
$y = 10;

echo ($x <=> $y); // returns +1 because $x is greater than $y
?>  

</body>
</html>