如何在使用PHP上傳的圖片中應用水印

Question

如何使用PHP將圖片應用於上傳的圖片？

例LINK：http://www.kitebeaches.com/kitesurf/uploadPicture/NIRVANA_Club_Village.html

Answer 1

嘗試此（改編自sitepoint）：

<?php 

header('content-type: image/jpeg'); 
$yourimagefile = 'something.jpg' // the image you're wanting to watermark 
$watermark = imagecreatefrompng('watermark.png'); // the watermark 
$watermark_width = imagesx($watermark); 
$watermark_height = imagesy($watermark); 
$image = imagecreatetruecolor($watermark_width, $watermark_height); 
$image = imagecreatefromjpeg($yourimagefile); 
$size = getimagesize($yourimagefile); 
$dest_x = $size[0] - $watermark_width - 5; 
$dest_y = $size[1] - $watermark_height - 5; 
imagecopymerge($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height, 100); 
imagejpeg($image); 
imagedestroy($image); 
imagedestroy($watermark); 

Answer 2

此前關於SO：

• How can I add an image onto an image in PHP like a watermark?
• Can this watermark function be improve (PHP)?
• How to watermark GIF image with 24-bit PNG with transparency in PHP?
• How to edit and watermark animated gifs, preferably through php?