note 58104 added to function.hexdec
| From: | hajamie at home | Date: | Mon, 24 Oct 2005 14:38:17 +0000 |
| Subject: | note 58104 added to function.hexdec | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-97517@lists.php.net to get a copy of this message | ||
This function will take a hex $color, e.g. fa34bc and make it the shade you want, e.g. anywhere
between 0 and 255. The smaller the number, the darker the output color. It keeps the color the
same, only changing the shade.
function correctshade($color, $shade)
{
$r = hexdec(substr($color,0,2));
$g = hexdec(substr($color,2,2));
$b = hexdec(substr($color,4,2));
$sum = ($r + $g + $b);
$x = (($shade * 3) - $sum) / $sum;
if ($x >= 0) {
$x = $x + 1;
} else {
$x = 1 + $x;
}
$r = intval($x * $r);
$g = intval($x * $g);
$b = intval($x * $b);
$r = dechex($r);
$g = dechex($g);
$b = dechex($b);
return $r.$g.$b;
}
----
Manual Page -- http://www.php.net/manual/en/function.hexdec.php
Edit -- http://master.php.net/manage/user-notes.php?action=edit+58104
Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+58104&report=yes&reason=added+to+the+manual
Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+58104&report=yes&reason=bad+code
Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+58104&report=yes&reason=spam
Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+58104&report=yes&reason=useless
Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+58104&report=yes&reason=non-english
Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+58104&report=yes&reason=already+in+docs
Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+58104&report=yes
Reject -- http://master.php.net/manage/user-notes.php?action=reject+58104&report=yes
Search -- http://master.php.net/manage/user-notes.php