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php编程文件上传代码

2014-06-18 12:03 525 查看
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>图片上传程序</title>
<?php
//上传文件类型列表
$uptypes=array(
'image/jpg',
'image/jpeg',
'image/png',
'image/gif',
'image/bmp',
'image/pjpeg',
$max_file_size=20000;     //上传文件大小限制, 单位BYTE
$destination_folder="uploadimg/"; //上传文件路径
$watermark=1;      //是否附加水印(1为加水印,其他为不加水印);
$watertype=1;      //水印类型(1为文字,2为图片)
$waterposition=1;     //水印位置(1为左下角,2为右下角,3为左上角,4为右上角,5为居中);
$waterstring="http://www.35880.cn/";  //水印字符串
$waterimg="xplore.gif";    //水印图片
$imgpreview=1;      //是否生成预览图(1为生成,其他为不生成);
$imgpreviewsize=1/1;    //缩略图比例
?>

<style type="text/css">
body{ font-size: 14px; }
input{ background-color: white; border: 1px inset #CCCCCC;  }
</style>
</head>

<body>
<form enctype="multipart/form-data" method="post" name="upform">
上传文件:
<input name="upfile" type="file">
<input type="submit" value="上传"><br>
允许上传的文件类型为:<?php echo implode(', ',$uptypes) ?>
</form>

<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
$file = $_FILES["upfile"];
$filename=$file["tmp_name"];
if (!is_uploaded_file($filename))
//是否存在文件
{
echo "图片不存在!";
exit;
}

if($max_file_size < $file["size"])
//检查文件大小
{
echo "文件太大!";
exit;
}

if(!in_array($file["type"], $uptypes))
//检查文件类型
{
echo "文件类型不符!".$file["type"];
exit;
}

if(!file_exists($destination_folder))
{
mkdir($destination_folder);
}

$image_size = getimagesize($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 " <font color=red>已经成功上传</font><br>文件名:  <font color=blue>".$destination_folder.$fname."</font><br>";
echo " 宽度:".$image_size[0];
echo " 长度:".$image_size[1];
echo "<br> 大小:".$file["size"]." bytes";

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("不支持的文件类型");
exit;
}

imagecopy($nimage,$simage,0,0,0,0,$image_size[0],$image_size[1]);
imagefilledrectangle($nimage,1,$image_size[1]-15,120,$image_size[1],$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($imgpreview==1)
{
echo "<br>图片预览:<br>";
echo "<img src=\"".$destination."\" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);
echo " alt=\"图片预览:\r文件名:".$destination."\r上传时间:\">";
}
}
?>
</body>
</html>
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标签： 编程 php html 上传图片
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