Explain abs() function in php

 Q. Explain abs() function in php.

Answer:

In PHP, the abs() function is used to calculate the absolute value of a number. The absolute value of a number is its distance from zero on the number line, regardless of the direction. In other words, it gives the positive magnitude of a numeric expression.

Here's the basic syntax of the abs() function:
abs(number $number): number

Parameters:

$number: The numeric value for which you want to calculate the absolute value.
Return Value:

The absolute value of the input number.
Here's an example of how abs() works:
$number1 = 5;
$number2 = -8;

$result1 = abs($number1); // $result1 is 5
$result2 = abs($number2); // $result2 is 8


In this example, abs($number1) returns 5 because the absolute value of 5 is 5. Similarly, abs($number2) returns 8 because the absolute value of -8 is 8. The abs() function is commonly used in situations where you want to ensure that a value is non-negative, regardless of its original sign.