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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. 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).

範例 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) ?>`

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Mathematical Functions | 上一層 | acos