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php图片上传存储源码,可实现预览

<?php
header("content-Type: text/html; charset=utf-8");
$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=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="zmr/"; //上传文件路径
$watermark=1;   //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=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="zmrbk.com"; //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追梦图床</title>
<LINK rel="Bookmark" href="https://www.zmrbk.com/favicon.ico" >
<LINK rel="Shortcut Icon" href="https://www.zmrbk.com/favicon.ico" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="description" content="追梦图床" />
<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">追梦博客图床</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</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=\"https://".$_SERVER['SERVER_NAME'].$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]https://".$_SERVER['SERVER_NAME'].$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>

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