php 图片上传预览(转)

网上找的图片上传预览：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<?php

header("content-Type: text/html; charset=gb2312");

$uptypes=array('image/jpg', //上传文件类型列表

'image/jpeg',

'image/png',

'image/pjpeg',

'image/gif',

'image/bmp',

'application/x-shockwave-flash',

'image/x-png',

'application/msword',

'audio/x-ms-wma',

'audio/mp3',

'application/vnd.rn-realmedia',

'application/x-zip-compressed',

'application/octet-stream');

$max_file_size=10000000; //上传文件大小限制, 单位BYTE

$path_parts=pathinfo($_SERVER['PHP_SELF']); //取得当前路径

$destination_folder="up/"; //上传文件路径

$watermark=0; //是否附加水印(1为加水印,0为不加水印);

$watertype=1; //水印类型(1为文字,2为图片)

$waterposition=2; //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="www.yinao.tk"; //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,0为不生成);

$imgpreviewsize=1/1; //缩略图比例

?>

<html xmlns="undefined">

<head>

<title>图片上传储存</title>

<LINK rel="Bookmark" href="http://www.yinao.tk/ico.ico" >

<LINK rel="Shortcut Icon" href="http://www.yinao.tk/ico.ico" />

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

<meta name="description" content="亿脑网盘_免费网络无限大图片上传储存" />

<style type="text/css">

body,td{font-family:tahoma,verdana,arial;font-size:11px;line-height:15px;background-color:white;color:#666666;

strong{font-size:12px;}

a:link{color:#0066CC;}

a:hover{color:#FF6600;}

a:visited{color:#003366;}

a:active{color:#9DCC00;}

a{TEXT-DECORATION:none}

td.irows{height:20px;background:url("index.php?i=dots") repeat-x bottom}

</style>

</head>

<script type="text/javascript">function oCopy(obj){obj.select();js=obj.createTextRange();js.execCommand("Copy");};function sendtof(url){window.clipboardData.setData('Text',url);alert('复制地址成功，粘贴给你好友一起分享。');};function select_format(){var on=document.getElementById('fmt').checked;document.getElementById('site').style.display=on?'none':'';document.getElementById('sited').style.display=!on?'none':'';};var flag=false;function DrawImage(ImgD){var image=new Image();image.src=ImgD.src;if(image.width>0&&image.height>0){flag=true;if(image.width/image.height>=120/80){if(image.width>120){ImgD.width=120;ImgD.height=(image.height*120)/image.width;}else {ImgD.width=image.width;ImgD.height=image.height;};ImgD.alt=image.width+"×"+image.height;}else {if(image.height>80){ImgD.height=80;ImgD.width=(image.width*80)/image.height;}else {ImgD.width=image.width;ImgD.height=image.height;};ImgD.alt=image.width+"×"+image.height;}};};function FileChange(Value){flag=false;document.all.uploadimage.width=10;document.all.uploadimage.height=10;document.all.uploadimage.alt="";document.all.uploadimage.src=Value;};</script>

<body bgcolor="#FFFFFF">

<center>

<form enctype="multipart/form-data" method="post" name="upform">

<table border="1" width="55%" id="table1" cellspacing=0>

<tr>

<td colspan="2"><p align="center">最大文件限制1M </td>

</tr>

<tr>

<td width="10%"><div style="width:120px; height:80px;overflow:hidden;text-align: center;" ><IMG id=uploadimage height=0 width=0 src="" onload="javascript:DrawImage(this);" ></div></td>

<td width="71%"><div style="width:361px; height:80px;overflow:hidden;text-align: center;padding:30px; " >

<input style="width:208;border:1 solid #9a9999; font-size:9pt; background-color:#ffffff; height:18" size="17" name=upfile type=file

onchange="javascript:FileChange(this.value);">

<input type="submit" value="上传" style="width:60;border:1 solid #9a9999; font-size:9pt; background-color:#ffffff; height:18" size="17"></td>

</tr>

</table>

允许上传的文件类型为:jpg|jpeg|gif|bmp|png|swf|mp3|wma|zip|rar|doc</form>

<?php

if ($_SERVER['REQUEST_METHOD'] == 'POST')

{

if (@!is_uploaded_file($_FILES["upfile"][tmp_name]))

//是否存在文件

{

echo "<font color='red'>文件不存在！</font>";

exit;

}

$file = $_FILES["upfile"];

if($max_file_size < $file["size"])

//检查文件大小

{

echo "<font color='red'>文件太大！</font>";

exit;

}

if(!in_array($file["type"], $uptypes))

//检查文件类型

{

echo "<font color='red'>不能上传此类型文件！</font>";

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 "<font color='red'>同名文件已经存在了！</a>";

exit;

}

if(!move_uploaded_file ($filename, $destination))

{

echo "<font color='red'>移动文件出错！</a>";

exit;

}

$pinfo=pathinfo($destination);

$fname=@$pinfo[basename];

echo " <font color=red>成功上传,鼠标移动到地址栏自动复制</font><br><table width=\"348\" cellspacing=\"0\" cellpadding=\"5\" border=\"0\" class=\"table_decoration\" align=\"center\"><tr><td><input type=\"checkbox\" id=\"fmt\" onclick=\"select_format()\"/>图片UBB代码<br/><div id=\"site\"><table border=\"0\"><tr><td valign=\"top\">文件地址:</td><td><input type=\"text\" onclick=\"sendtof(this.value)\" onmouseover=\"oCopy(this)\" style=font-size=9pt;color:blue size=\"44\" value=\"http://".$_SERVER['SERVER_NAME'].$path_parts["dirname"]."/".$destination_folder.$fname."\"/>

</td></tr></table></div><div id=\"sited\" style=\"display:none\"><table border=\"0\"><tr><td valign=\"top\">文件地址:</td><td><input type=\"text\" onclick=\"sendtof(this.value)\" onmouseover=\"oCopy(this)\" style=font-size=9pt;color:blue size=\"44\" value=\"[img]http://".$_SERVER['SERVER_NAME'].$path_parts["dirname"]."/".$destination_folder.$fname."[/img]\"/></td></tr></table></div></td></tr></table>";

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("<font color='red'>不能上传此类型文件！</a>");

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 "<br>图片预览:<br>";

echo "<a href=\"".$destination."\" target='_blank'><img src=\"".$destination."\" width=".($image_size[0]*$imgpreviewsize)." height=".($image_size[1]*$imgpreviewsize);

echo " alt=\"图片预览:\r文件名:".$fname."\r上传时间:".date('m/d/Y h:i')."\" border='0'></a>";

}

}

?>

</center>

</body>

</html>
运行后的界面：
巴特西

php 图片上传预览(转)

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