note 51850 added to function.usort

When sorting a large multi-dimensional array, I ran into an issue where the array was not being sorted either ascending or descending, even when it started in sorted order. It turns out that the above note about the callback function returning an integer is true. My comparison function was just a subtraction between two floating point numbers, and the result being a float produced very unpredictable results. ---- Manual Page -- http://www.php.net/manual/en/function.usort.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+51850 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+51850&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+51850&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+51850&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+51850&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+51850&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+51850&report=yes Search -- http://master.php.net/manage/user-notes.php