Integer

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.

Syntax

Integers can be defined in decimal(base 10), hexadecimal(base 16), octal(base 8) or binary(base 2) notation.

Example 1

snippet
<?php
	$x=123;
	echo $x;
?>

Output:

PHP Integer

Example 2

snippet
<?php
    $a=100;
    var_dump($a);
?>

Output:

PHP Integer

Example 3

snippet
<?php 
    // decimal base integers 
    $deci1 = 40;  
    $deci2 = 500;  
   // octal base integers 
    $octal1 = 07;  
   // hexadecimal base integers 
    $octal = 0x45;  
    $add = $deci1 + $deci2; 
    echo $add; 
?>

Output:

PHP Integer

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