PHP Manual: abs


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abs

(PHP 3, PHP 4, PHP 5)

abs -- Absolute value

Description

number abs ( mixed number )

Returns the absolute value of number.

Parameters

number

The numeric value to process

Return Values

The absoulte value of number. If the argument number is of type float, the return type is also float, otherwise it is integer (as float usually has a bigger value range than integer).

Examples

Example 1. abs() example

<?php
$abs
= abs(-4.2); // $abs = 4.2; (double/float)
$abs2 = abs(5);   // $abs2 = 5; (integer)
$abs3 = abs(-5);  // $abs3 = 5; (integer)
?>