<!DOCTYPE html>
<html lang="en">
<head>
<title>PHP Integers demo-aimtocode</title>
</head>
<body>
<?php
$a = 123; // decimal number
var_dump($a);
echo "<br>";
$b = -123; // a negative number
var_dump($b);
echo "<br>";
$c = 0x1A; // hexadecimal number
var_dump($c);
echo "<br>";
$d = 0123; // octal number
var_dump($d);
?>
</body>
</html>