<?php $x=123; echo $x; ?>
<?php $a=100; var_dump($a); ?>
<?php // decimal base integers $deci1 = 40; $deci2 = 500; // octal base integers $octal1 = 07; // hexadecimal base integers $octal = 0x45; $add = $deci1 + $deci2; echo $add; ?>