note 95983 deleted from function.imagecopymerge by danbrown

From: Date: Mon, 01 Feb 2010 15:31:31 +0000
Subject: note 95983 deleted from function.imagecopymerge by danbrown
References: 1  Groups: php.notes 
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Note Submitter: peterjwest3 at gmail dot com ---- Sina's method is elegant but had a small bug as well as some redundant code. Here is a more concise version with better comments: <?php //PNG alpha channel support for imagecopymerge() //This works because imagecopy() supports alpha but not blending, while imagecopymerge() supports blending but not alpha function imagecopymerge_alpha($dst_im, $src_im, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $pct) { //Creates a portion of the destination image and overlays the source image (with alpha) $portion = imagecreatetruecolor($src_w, $src_h); imagecopy($portion, $dst_im, 0, 0, $dst_x, $dst_y, $src_w, $src_h); imagecopy($portion, $src_im, 0, 0, $src_x, $src_y, $src_w, $src_h); //Blends the portion with the original image imagecopymerge($dst_im, $portion, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $pct); } ?>

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