图片和传真查看器 PHP 图片上传代码
（代码片断试验成功，成功上传！）
因为昨天想起来学习一下PHP代码的冲动，是来源于像模仿着做一个类似公司IMAGE LIBRARY的东西出来。所以，今天当最基本的功能实现后，对PHP有了个概念性的认识后，就很自然地想到了个重要的功能急待实现，那就是图片的上传。
于是，开始在网上搜罗，找到个别人博客里的由三个页面组成的代码片断，于是拷下来研究，结果始终调试不成。本以为是公司电脑入域问题在作怪，后来经过一番尝试后，打算暂时放一下。回家去试（因为家里的电脑是最纯净的环境配制）。
到家后，将代码拷出来尝试了一下，依旧不行，同样的报错内容。很果断地，打算另辟蹊径，重新找个代码片断。哈，非常顺利，找到个仅一个页面的代码片断，一次尝试便成功了。CHEERS！
------------以下代码转载而来，贴上来和大家分享--------
复制代码 代码如下:
$uptypes=array('image/jpg', //上传文件类型列表
'image/jpeg',
'image/png',
'image/pjpeg',
'image/gif',
'image/bmp',
'image/x-png');
$max_file_size=5000000; //上传文件大小限制, 单位BYTE
$destinati c repeat-x bottom}
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
if (!is_uploaded_file($_FILES["upfile"][tmp_name]))
//是否存在文件
{
echo "文件不存在！";
exit;
}
$file = $_FILES["upfile"];
if($max_file_size //检查文件大小
{
echo "文件太大！";
exit;
}
if(!in_array($file["type"], $uptypes))
//检查文件类型
{
echo "只能上传图像文件或Flash！";
exit;
}
if(!file_exists($destination_folder))
mkdir($destination_folder);
$filename=$file["tmp_name"];
$image_size = getimagesize($filename);
$pinfo=pathinfo($file["name"]);
$ftype=$pinfo[extension];
$destination = $destination_folder.time().".".$ftype;
if (file_exists($destination) && $overwrite != true)
{
echo "同名文件已经存在了！";
exit;
}
if(!move_uploaded_file ($filename, $destination))
{
echo "移动文件出错！";
exit;
}
$pinfo=pathinfo($destination);
$fname=$pinfo[basename];
echo " 已经成功上传
文件名: ".$destination_folder.$fname."
";
echo " 宽度:".$image_size[0];
echo " 长度:".$image_size[1];
if($watermark==1)
{
$iinfo=getimagesize($destination,$iinfo);
$nimage=imagecreatetruecolor($image_size[0],$image_size[1]);
$white=imagecolorallocate($nimage,255,255,255);
$black=imagecolorallocate($nimage,0,0,0);
$red=imagecolorallocate($nimage,255,0,0);
imagefill($nimage,0,0,$white);
switch ($iinfo[2])
{
case 1:
$simage =imagecreatefromgif($destination);
break;
case 2:
$simage =imagecreatefromjpeg($destination);
break;
case 3:
$simage =imagecreatefrompng($destination);
break;
case 6:
$simage =imagecreatefromwbmp($destination);
break;
default:
die("不能上传此类型文件！");
exit;
}
imagecopy($nimage,$simage,0,0,0,0,$image_size[0],$image_size[1]);
imagefilledrectangle($nimage,1,$image_size[1]-15,80,$image_size[1],$white);
switch($watertype)
{
case 1: //加水印字符串
imagestring($nimage,2,3,$image_size[1]-15,$waterstring,$black);
break;
case 2: //加水印图片
$simage1 =imagecreatefromgif("xplore.gif");
imagecopy($nimage,$simage1,0,0,0,0,85,15);
imagedestroy($simage1);
break;
}
switch ($iinfo[2])
{
case 1:
//imagegif($nimage, $destination);
imagejpeg($nimage, $destination);
break;
case 2:
imagejpeg($nimage, $destination);
break;
case 3:
imagepng($nimage, $destination);
break;
case 6:
imagewbmp($nimage, $destination);
//imagejpeg($nimage, $destination);
break;
}
//覆盖原上传文件
imagedestroy($nimage);
imagedestroy($simage);
}
if($imgpreview==1)
{
echo "
图片预览:
";
echo "
}
}
?>
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