Are there any built-in PHP functions that can be used to calculate the absolute difference between two numbers?

To calculate the absolute difference between two numbers in PHP, you can use the abs() function. This function returns the absolute value of a number, which is the distance of the number from zero without considering its sign. By subtracting one number from the other and then passing the result to the abs() function, you can easily find the absolute difference between the two numbers.

$num1 = 10;
$num2 = 5;

$absoluteDifference = abs($num1 - $num2);

echo "The absolute difference between $num1 and $num2 is: $absoluteDifference";