php透明合并png与jpg图片

源

 1 <?php

 2 $png = imagecreatefrompng('./mark.png');

 3 $jpeg = imagecreatefromjpeg('./image.jpg');

 4 

 5 list($width, $height) = getimagesize('./image.jpg');

 6 list($newwidth, $newheight) = getimagesize('./mark.png');

 7 $out = imagecreatetruecolor($newwidth, $newheight);

 8 imagecopyresampled($out, $jpeg, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

 9 imagecopyresampled($out, $png, 0, 0, 0, 0, $newwidth, $newheight, $newwidth, $newheight);

10 imagejpeg($out, 'out.jpg', 100);

11 ?>

 1 另外一种方法：

 2 

 3 $dest = imagecreatefrompng('mapCanvas.png');

 4 $src = imagecreatefromjpeg('si.jpg');

 5 imagealphablending($dest, false);

 6 imagesavealpha($dest, true);

 7 // Copy and merge

 8 imagecopymerge($dest, $src, 17, 13, 0, 0, 60, 100, 100);

 9 

10 // Output and free from memory

11 header('Content-Type: image/png');

12 imagepng($dest);

13 

14 imagedestroy($dest);

15 imagedestroy($src);