note 43092 added to function.number-format

This script will allow you to round to a specific decimal place and the number can be negative, less than zero, or whatever. Some tests can be found here to show its use: http://www.conxiondesigns.com/laboratory/php/round_decimals/ <?php function roundDecimals($n, $dp) { if($n < 0) { $isNegative = true; } $expanded = (int)(abs($n) * pow(10, $dp+1)); if($expanded % 10 == 0) { $expanded = ($expanded / pow(10, $dp)); } else if ($expanded % 10 >= 5) { $expanded = ((int)($expanded/10) + 1); $expanded = $expanded/pow(10,$dp); } else if ($expanded % 10 < 5) { $expanded = (int)($expanded/10); $expanded = $expanded/pow(10,$dp); } $n = $expanded; if($isNegative == true) { $n = $n * -1; } return $n; } ?> In this function $n should be the number to input, $dp should be an integer of how many decimal places you want after rounding. It returns a float. This however is not enough when you go to display the number because we need to force php to display trialing zeros. You must present it in the following way to get results which are accurate: <?php printf("%.1f",roundDecimals(20.562, 1)); ?> Where the %.1f and second argument (2 in this case) must correspond. So if you wanted the 5th decimal place to be the one rounded to you would have: <?php printf("%.5f",roundDecimals(20.5628964, 5)); ?> I find it useful but I am sure there are some flaws in it. -Jim ---- Manual Page -- http://www.php.net/manual/en/function.number-format.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+43092 Delete -- http://master.php.net/manage/user-notes.php?action=delete+43092&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+43092&report=yes Search -- http://master.php.net/manage/user-notes.php