Question

I have script that add water mark (PNG, transparent) to image(JPG). Works fine with a catch - in some way water mark changes colors and makes it NOT transparent. This is code i use for adding water mark:

$im = imagecreatefromjpeg( ../../pics/ .$ran. _large.jpg );
$stamp = imagecreatefrompng( a.png );

$marge_right = 10;
$marge_bottom = 10;
$sx = imagesx($stamp);
$sy = imagesy($stamp);

imagecopymerge($im, $stamp, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($stamp), imagesy($stamp), 70);

// Save the image to file and free memory
imagejpeg($im,  ../../pics/ .$ran. _large.jpg );
imagedestroy($im);

http://i39.tinypic.com/20iuwk7.jpg”rel=“nofollow> 带水面的图像在PHP生成(重)。

Answer 1

thank you for help guys - I found answer in this site

$im = imagecreatefromjpeg( ../../pics/ .$ran. _large.jpg );
$stamp = imagecreatefrompng( a.png );

imagealphablending($im, true);

$marge_right = 10;
$marge_bottom = 10;

$sx = imagesx($stamp);
$sy = imagesy($stamp);

$offset = 10;

imagecopy($im, $stamp, imagesx($im) - imagesx($stamp) - $offset, imagesy($im) - imagesy($stamp) - $offset, 0, 0, imagesx($stamp), imagesy($stamp));
// Save the image to file and free memory
imagejpeg($im,  ../../pics/ .$ran. _large.jpg );
imagedestroy($im);

Answer 2

你的产出形象格式是 j。 Jpeg并不支持实际情况。将产出格式改为png。

还建议你使用图像魔鬼。 Gd非常原始。

Answer 3

• 在从巴布亚新几内亚制作的甲型六氯环己烷地图之后,不要忘记这些功能:

imagealphablending($stamp,false);
imagesavealpha($stamp,true);

参看这是否有什么区别?

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