This data type holds only numeric values. It stores only whole number with no fractional component. The range of integers must lie between -2^31 to 2^31.
Integers can be defined in decimal(base 10), hexadecimal(base 16), octal(base 8) or binary(base 2) notation.
<?php $x=123; echo $x; ?>
Output:
<?php
$a=100;
var_dump($a);
?>Output:
<?php
// decimal base integers
$deci1 = 40;
$deci2 = 500;
// octal base integers
$octal1 = 07;
// hexadecimal base integers
$octal = 0x45;
$add = $deci1 + $deci2;
echo $add;
?>Output:
