note 49866 added to function.hexdec

It's just a revision to marfastic's ligten_up script, it simply adds/subtracts mod_color to orig_color. I use it often to adjust tonals rather than brightness only <? function mod_color($orig_color, $mod, $mod_color){ /* $orig_color - original html color, hex $mod_color - modifying color, hex $mod - modifier '+' or '-' usage: mod_color('CCCCCC', '+', '000033') */ // does quick validation preg_match("/([0-9]|[A-F]){6}/i",$orig_color,$orig_arr); preg_match("/([0-9]|[A-F]){6}/i",$mod_color,$mod_arr); if ($orig_arr[0] && $mod_arr[0]) { for ($i=0; $i<6; $i=$i+2) { $orig_x = substr($orig_arr[0],$i,2); $mod_x = substr($mod_arr[0],$i,2); if ($mod == '+') { $new_x = hexdec($orig_x) + hexdec($mod_x); } else { $new_x = hexdec($orig_x) - hexdec($mod_x); } if ($new_x < 0) { $new_x = 0; } else if ($new_x > 255) { $new_x = 255; }; $new_x = dechex($new_x); $ret .= $new_x; } return $ret; } else { return false; } } ?> ---- Manual Page -- http://www.php.net/manual/en/function.hexdec.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+49866 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+49866&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+49866&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+49866&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+49866&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+49866&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+49866&report=yes Search -- http://master.php.net/manage/user-notes.php