使用imagick在动态GIF上打文字水印

gistfile1.php

<?PHP           
/*使用imagick在动态GIF上打文字水印*/
$draw = new ImagickDraw();           
$draw->setFont('simsun.ttc');           
$draw->setFontSize( 12 );   
  
$text = iconv('GB2312', 'UTF-8', '网易');   
          
$image=new Imagick();           
$animation = new Imagick();               
$animation->setFormat( "gif" );               
$image->readImage("52924.gif");           
$unitl = $image->getNumberImages();           
      
for ($i=0; $i<$unitl; $i++) {   
    $image->setImageIndex($i);   
    $thisimage = new Imagick();           
    $thisimage->readImageBlob($image);   
    $delay = $thisimage->getImageDelay();   
    $thisimage->annotateImage($draw, 0, 12, 0, $text);             
    $animation->addImage($thisimage);               
    $animation->setImageDelay( $delay );           
}           
      
header( "Content-Type: image/gif" );               
echo $animation->getImagesBlob();               
                
?>