PHP abs() Function
The abs() function is an inbuilt function in PHP which is used to return the absolute (positive) value of a number. The abs() function in PHP is identical to what we call modulus in mathematics. The modulus or absolute value of a negative number is positive.
Syntax
number abs( value )Parameters
The abs() function accepts single parameter value which holds the number whose absolute value you want to find.
Return Value
It returns the absolute value of the number passed to it as argument.
Examples
Input : abs(6)
Output : 6
Input : abs(-6)
Output : 6
Input : abs(6.4)
Output : 6.4
Input : abs(-6.4)
Output : 6.4Below programs illustrate the abs() function in PHP:
Program 1: When a positive number is passed as a parameter:
<?php
echo (abs(6));
?>
Output
6
Program 2: When a negative number is passed as a parameter:
<?php
echo (abs(-6));
?>
Output
6
Program 3: When a positive number with decimal places is passed as a parameter:
<?php
echo (abs(6.4));
?>
Output
6.4
Program 4: When a negative number with decimal places is passed as a parameter:
<?php
echo (abs(-6.4));
?>
Output
6.4
