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POPHP Change image color to transparent then use as a mask
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copied!<p>I'm trying to change the background colour of an image from white, to transparent, then to use that as a mask to put over another image. (Cannot be transparent already, because another part is which is used as a mask over yet another image)... layers are fun :)</p> <p>Full code:</p> <pre><code><? include '../includes/db.php'; include '../includes/checks.php'; $type = $_GET['t']; //shirt | shorts $style = $_GET['s']; $z = $_GET['z']; // home | away $a = $_GET['a']; $b = $_GET['b']; $aR = hexdec($a['0'].$a['1']); $aG = hexdec($a['2'].$a['3']); $aB = hexdec($a['4'].$a['5']); $bR = hexdec($b['0'].$b['1']); $bG = hexdec($b['2'].$b['3']); $bB = hexdec($b['4'].$b['5']); // main top $imgname = '../images/kits/test/'. $uTime .'.png'; $im = imagecreatetruecolor( 100, 100); $red = imagecolorallocate($im, $aR, $aG, $aB); imagefill($im, 0, 0, $red); $mask = imagecreatefrompng('../images/kits/test/6-space.png'); imagecopyresampled($im, $mask, 0, 0, 0, 0, imagesx($im), imagesy($im), imagesx($mask), imagesy($mask)); imagedestroy($mask); $mask = imagecreatefrompng('../images/kits/test/4-shadows.png'); imagecopyresampled($im, $mask, 0, 0, 0, 0, imagesx($im), imagesy($im), imagesx($mask), imagesy($mask)); imagedestroy($mask); $mask = imagecreatefrompng('../images/kits/test/1-tag.png'); imagecopyresampled($im, $mask, 0, 0, 0, 0, imagesx($im), imagesy($im), imagesx($mask), imagesy($mask)); imagedestroy($mask); // design $im2 = imagecreatetruecolor( 100, 100); $red = imagecolorallocate($im2, $bR, $bG, $bB); imagefill($im2, 0, 0, $red); $mask = imagecreatefrompng('../images/kits/test/5-logo.png'); imagecopyresampled($im2, $mask, 0, 0, 0, 0, imagesx($im2), imagesy($im2), imagesx($mask), imagesy($mask)); imagedestroy($mask); imagecolortransparent($im2, imagecolorallocatealpha($im2, 0, 0, 0, 127)); imagealphablending($im2, false); imagesavealpha($im2, true); $white = imagecolorallocate($im2,255,255,255); imagecolortransparent($im2, $white); // merge and result imagecopyresampled($im, $im2, 0, 0, 0, 0, imagesx($im), imagesy($im), imagesx($im2), imagesy($im2)); imagepng($im, $imgname); imagedestroy($im2); imagedestroy($im); echo '<img src="', $imgname ,'">'; ?> </code></pre>

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