note 107060 added to function.imagecopymerge

imagecopymerge PHP function helped me to create a fast method that replaces one color by another in true color images. Beforehand for this purpose I had to loop over all the pixels of an image and replace color pixel by pixel using imagecolorat and imagesetpixel; this method is really slow for large images. So here is the fast one: <?php function replaceColorInImage ($image, $old_r, $old_g, $old_b, $new_r, $new_g, $new_b) { imagecolortransparent ($image, imagecolorallocate ($image, $old_r, $old_g, $old_b)); $w = imagesx ($image); $h = imagesy ($image); $resImage = imagecreatetruecolor ($w, $h); imagefill ($resImage, 0, 0, imagecolorallocate ($resImage, $new_r, $new_g, $new_b)); imagecopymerge ($resImage, $image, 0, 0, 0, 0, $w, $h, 100); return $resImage; } ?> ---- Server IP: 69.147.83.197 Probable Submitter: 141.228.106.147 ---- Manual Page -- http://www.php.net/manual/en/function.imagecopymerge.php Edit -- https://master.php.net/note/edit/107060 Del: integrated -- https://master.php.net/note/delete/107060/integrated Del: useless -- https://master.php.net/note/delete/107060/useless Del: bad code -- https://master.php.net/note/delete/107060/bad+code Del: spam -- https://master.php.net/note/delete/107060/spam Del: non-english -- https://master.php.net/note/delete/107060/non-english Del: in docs -- https://master.php.net/note/delete/107060/in+docs Del: other reasons-- https://master.php.net/note/delete/107060 Reject -- https://master.php.net/note/reject/107060 Search -- https://master.php.net/manage/user-notes.php