如何将图像添加到像水印一样的PHP图像中 [英] How can I add an image onto an image in PHP like a watermark
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问题描述
我正在尝试编写一个小的php函数来拍摄图像并将水印类型的图像应用于图像顶部,并将它们保存为1张图像,此代码运行0错误,但未应用水印图像,是有什么明显的理由表明为什么不这样做?
I am trying to write a small php function to take an image and apply a watermark type image on top of the image and them save them as 1 image, this code runs with 0 errors but does not apply the watermark image, is there anything obvious that stants out on why it won't?
<?PHP
$source_file_path ='http://cache2.mycrib.net/images/image_group92/0/43/653807d5727a46498180e8ef57fdf7819b2b0c.jpg';
$watermark_image='fpwatermark.gif'; // the watermark image
$destination_image ='coooolgif.gif'; // where to save new file
$imagesize = getimagesize($destination_image);
$watermarksize = getimagesize($watermark_image);
$watermark_x = $imagesize[0] - $watermarksize[0] - 2;
$watermark_y = $imagesize[1] - $watermarksize[1] - 2;
//run function
watermark_img($watermark_image, $destination_image, $watermark_x, $watermark_y, $watermark_w, $watermarksize[0], $watermarksize[1], $source_file_path);
function watermark_img($watermark_src, $image_src, $watermark_x, $watermark_y, $watermark_w,$watermark_h, $source_file_path) {
//Determine what type of image we're working with
list($width, $height, $type) = getimagesize($image_src);
$image_ext = $type;
switch (strtolower($image_ext)) {
#gif
case 1:
$image = imagecreatefromgif($image_src);
break;
#jpg
case 2:
$image = imagecreatefromjpeg($image_src);
imageAlphaBlending($image, true);
break;
#png
case 3:
$image = imagecreatefrompng($image_src);
imageAlphaBlending($image, true);
break;
default:
return false;
}
//Create an instance of the watermark in memory
if (!($watermark = imagecreatefromgif($watermark_src)))
return false; //Make sure your Watermark is a GIF
//Add watermark to the image
if (!(imagecopy($image, $watermark, $watermark_x, $watermark_y, 0, 0, $watermark_w,
$watermark_h)))
return false;
//Resave the image with the watermark now in place
if (!(imagejpeg($image, $image_src)))
return false;
//Destroy instaces of images to free up RAM
imagedestroy($image);
imagedestroy($watermark);
//Apparently everything went well.
return $image_ext;
}
?>
推荐答案
我认为您需要更改此设置(这里是一个简单的教程 http://www.cafewebmaster.com/image-watermark-php ):
I think you need to change this (here is a simple tutorial http://www.cafewebmaster.com/image-watermark-php):
//Add watermark to the image
if (!(imagecopy($image, $watermark, $watermark_x, $watermark_y, 0, 0, $watermark_w,
$watermark_h)))
具有:
//Add watermark to the image
if (!(imagecopymerge($image, $watermark, $watermark_x, $watermark_y, 0, 0, $watermark_w,
$watermark_h, 100)))
或使用 wideImage ;)
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