客户端上载的页面：
-------------------- upload.htm ---------------------
<form enctype="multipart/form-data"
method="post" action="upload.php">
<input type="hidden" name="max_file_size" value="10240000000">请选择或输入上传文件名:<input name="upfile" type="file">
<input type="submit" value="开始上传">

--------------------- 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($image_info.==2)
{@$image2=imagecreatefromjpeg($image_path);
}
else if($image_info.==1){
@$image2=imagecreatefromgif($image_path);
}
else{print("不接受的图片！");exit;}
if(empty($image2)){print("系统错误，请重试");exit;}
$image2_x=imagesx($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_

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