[Velocd]

Have a custom function that is useful?

Just send me a link to a file with the function, or PM me the working code, and I'll display it in this post.


1. Evaluate mathematical expression
Here is a useful function that will take a mathematical expression and return the answer for it. Valid operators include plus + minus - multiply * divide / modulus % carrot/power ^ and parentheses ().

When used in BB Code, have one argument and it should function like so:

[math]5*6%3+((45/5)/4)[/math]

5*6%3 = 0
(45/5)/4 = 2.25
= 2.25

Here is the function:

PHP Code:

function arithmetic($expression)
{
    $expression = preg_replace('([^0-9\+\-*\/%\^\(\)])', '', trim($expression));

    eval('$answer ='.$expression.';');
    
    return $answer;
} 


Careful with parentheses. If you have (5/5)5 it will result in an error, and nothing will be returned.