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php gif图片加水印代码

Jun 13, 2016 am 09:48 AM
gif php code use add picture Increase Library yes watermark want

php gd库是不可以给gif图片加水印了,如果要利用php给gif图片增加水印的话,就得借助于一款ImageMagick功能的PHP扩展,它可以帮我们完成我们想要的功能哦。

php教程 gd库是不可以给gif图片加水印了,如果要利用php给gif图片增加水印的话,就得借助于一款imagemagick功能的php扩展,它可以帮我们完成我们想要的功能哦。

$imagedraw = new imagick();
$pixel = new imagickpixel('gray');
$pixel->setcolor('black');
$imagedraw->newimage(100, 75, $pixel);
$draw = new imagickdraw();
$draw->setfont('bookman-demiitalic');
$draw->setfontsize(12);
$image=new imagick();
$animation = new imagick();
$animation->setformat( "gif" );
$image->readimage("old.gif");
$unitl = $image->getimageindex();
$image->writeimages('animation.gif',false);
$delay = $image->getimagedelay();
$filename = 'animation-';
for ($i=0; $i     $thisimage = new imagick();
    $thisimage->readimage($filename.$i.'.gif');
    $thisimage->annotateimage($draw, 0, 12, 0, 'copyright by mpeg');
    $animation->addimage($thisimage);
    $animation->setimagedelay($delay);
}       
header("content-type: image/gif");
echo $animation->getimagesblob();
?>

imagemagick功能的php扩展。使用这个扩展可以使php具备和imagemagick相同的功能。   imagemagick是一套功能强大、稳定而且免费的工具集和开发包,可以用来读、写和处理超过185种基本格式的图片文件,包括流行的tiff, jpeg, gif, png, pdf以及photocd等格式。利用imagemagick,你可以根据web应用程序的需要动态生成图片, 还可以对一个(或一组)图片进行改变大小、旋转、锐化、减色或增加特效等操作,并将操作的结果以相同格式或其它格式保存。

组件下载地址

http://pecl.php.net/package/imagick
http://www.imagemagick.org

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