在线生成水印_图片加水印程序

<?php
printbreviaryImg("image/img.gif","ss","35","22");
function PrintBreviaryImg($spathimg,$photoname, $simgwidth, $simgheight)
{
  if(file_exists($spathimg))
  {
$size=GetImageSize($spathimg);
switch ( $size[2] ){
case 1: $origImg = @ImageCreateFromGIF($spathimg);
    break;
case 2: $origImg = @imagecreatefromjpeg($spathimg);
    break;
case 3: $origImg = @ImageCreateFromPNG($spathimg);
    break;
}
//生成缩略图
$simgsize=GetImgSize($simgwidth,$simgheight,$size[0],$size[1]);
if(function_exists("imagecopyresampled"))
{
$im = imagecreatetruecolor( $simgsize['width'],$simgsize['height'] );
imagecopyresampled( $im, $origImg, 0, 0, 0, 0,$simgsize['width'],$simgsize['height'],$size[0],$size[1] );
}
else
{
$im = imagecreate( $simgwidth,$simgheight );
imagecopyresized($im, $origImg, 0, 0, 0, 0,$simgwidth,$simgwidth,$simgsize['width'],$simgsize['height'] );
}
//添加水印
$dstX = $simgsize['width'] - 10;
$dstY = $simgsize['height'] - 10;
$string="[url=http://www.gd.com.cn]www.gd.com.cn[/url]";
$clo = imagecolorallocate($im, 255, 255, 255);
imagettftext($im, 48, 0, $dstX, $dstY, $clo, '../../fonts/arialbd.ttf', $string);
//添加水印
/*
$logoImage = ImageCreateFromGif('image/img.gif');
$logoW = ImageSX($logoImage);
    $logoH = ImageSY($logoImage);
    $dstX = -($simgsize['width']-$logoW);
$dstY = -($simgsize['height']-$logoH);
imagecopymerge($im, $logoImage, 0, 0, 0, 0, $logoW, $logoH,30);
    */
Imagejpeg($im,$photoname);
  }
  else
  {
    echo "暂缺图片";
  }
}
?>