客户端上载的页面：
-------------------- upload.htm ---------------------
method=post action=upload.php>
请选择或输入上传文件名:
--------------------- upload.php -------------------
if(empty($upfile)){
print(no file was transfered!\n无文件上传!);
exit;
}
$image_path=$upfile;
@$image_info=getimagesize($image_path);
if($image_info[2]==2)
{@$image2=imagecreatefromjpeg($image_path);
}
else if($image_info[2]==1){
@$image2=imagecreatefromgif($image_path);
}
else
if(empty($image2))
$image2_x=imagesx($image2);
$image2_y=imagesy($image2);
if($image2_x==$image2_y){
$x=150;
$y=0;
}
else if($image2_x>$image2_y){
$x=150;
$y=intval(150*$image2_y/$image2_x);
}
else{
$y=150;
$x=intval(150*$image2_x/$image2_y);
}
$image1=imagecreate($x,$y);
imagecopyresized($image1,$image2,0,0,0,0,$x,$y,$image2_x,$image2_y);
imagegif($image1,new.gif);
?>