note 16575 added to function.sqrt

I find this useful for any grid system where distances need to be computed (maps and graphs, mostly). Just use the distance between points formula (pseudo-code): sqrt((x2-x1)^2+(y2-y1)^2) to find the distance between two points. -- http://www.php.net/manual/en/function.sqrt.php http://master.php.net/manage/user-notes.php?action=edit+16575 http://master.php.net/manage/user-notes.php?action=delete+16575 http://master.php.net/manage/user-notes.php?action=reject+16575