Math Functions
PHP Manual

abs

Absolute value

Description

intfloat abs(intfloat $num)

Returns the absolute value of num.

Parameters

num

The numeric value to process

Return Values

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

Changelog

Version Description
8.0.0 num no longer accepts internal objects which support numeric conversion.

Examples

Example #1 abs example

<?php
var_dump(abs(-4.2));
var_dump(abs(5));
var_dump(abs(-5));
?>

The above example will output:

float(4.2)
int(5)
int(5)

See Also

  • gmp_abs
  • gmp_sign