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缩略图生成的php程序[转自奥索]

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Release: 2016-06-21 09:08:26
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程序|缩略图

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{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_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");
?>

-------------------------     说明       ----------------------
本代码特点在于将所有难看的warning转换为可以自已设计输出的出错提示,@作用在于抑制出借信息。此代码默认的是将图片转换为长宽不超过150像素的缩略图,并保存为new.gif  。使用时可以随意修改。
本代码由turtlevan( turtlevan@263.net )制作,您可以任意使用与修改,也可在网络上任意传播,但不得剽窃为已有。



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