Get positive value
abs() function returns the absolute value of its number argument
echo abs(-12.239); //Prints: 12.34
echo abs(127); //Prints: 127
Example returning the distance regardless of how the values are passed
function GetDistance($Start, $End)
{
return abs($Start - $End);
}
GetDistance(-1, 4) //Returns 5
GetDistance(4, -1) //Returns 5
GetDistance(3, 7) //Returns 4
GetDistance(7, 3) //Returns 4
Feel free to comment if you can add help to this page or point out issues and solutions you have found. I do not provide support on this site, if you need help with a problem head over to stack overflow.