Math Functions
PHP Manual

abs

(PHP 4, PHP 5, PHP 7)

absAbsolute value

Description

number abs ( mixed $number )

Returns the absolute value of number.

Parameters

number

The numeric value to process

Return Values

The absolute 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
echo abs(-4.2); // 4.2 (double/float)
echo abs(5);    // 5 (integer)
echo abs(-5);   // 5 (integer)
?>

See Also


Math Functions
PHP Manual