note 49969 added to function.base-convert
| From: | mikeatwecantlosedotcom at osu1 dot php dot net | Date: | Mon, 14 Feb 2005 05:52:36 +0000 |
| Subject: | note 49969 added to function.base-convert | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-84995@lists.php.net to get a copy of this message | ||
There are a few functions posted here to inverse or invert a hex color code yet none of them have
actually worked for me.
This function will take a hex color code string such as '#00FF00' and return the inversed
or inverted hex color code string of '#FF00FF'.
<?
function inverseColor($hex) {
if(substr($hex, 0, 1) == '#') $hex = substr($hex, 1);
$r = str_pad(dechex(255 - hexdec(substr($hex, 0, 2)) ),2,'0',STR_PAD_LEFT);
$g = str_pad(dechex(255 - hexdec(substr($hex, 2, 2)) ),2,'0',STR_PAD_LEFT);
$b = str_pad(dechex(255 - hexdec(substr($hex, 4, 2)) ),2,'0',STR_PAD_LEFT);
return strtoupper('#'.$r.$g.$b);
}
?>
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Manual Page -- http://www.php.net/manual/en/function.base-convert.php
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