Math Functions
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Math Functions
PHP Manual

# abs

(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 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

- gmp_abs() - Absolute value
- gmp_sign() - Sign of number

Math Functions
acos
Math Functions
PHP Manual