PHP图片上传代码一例
分享一个php图片上传代码，如下：[*]<?php
[*]$uptypes=array('image/jpg', //上传文件类型列表
[*]'image/jpeg',
[*]'image/png',
[*]'image/pjpeg',
[*]'image/gif',
[*]'image/bmp',
[*]'application/x-shockwave-flash',
[*]'image/x-png');
[*]$max_file_size=5000000; //上传文件大小限制, 单位BYTE
[*]$destination_folder="upload/"; //上传文件路径
[*]$watermark=0; //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);
[*]$waterstring="newphp.site.cz"; //水印字符串
[*]$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=1/2; //缩略图比例
[*]?>
[*]<html>
[*]<head>
[*]<title>PHP图片上传 - www.jbxue.com</title>
[*]<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
[*]<style type="text/css">body,td{font-family:tahoma,verdana,arial;font-size:11px;line-height:15px;background-color:white;color:#666666;margin-left:20px;}
[*]strong{font-size:12px;}
[*]a:link{color:#0066CC;}
[*]a:hover{color:#FF6600;}
[*]a:visited{color:#003366;}
[*]a:active{color:#9DCC00;}
[*]table.itable{}
[*]td.irows{height:20px;background:url("index.php?i=dots") repeat-x bottom}</style>
[*]</head>
[*]<body>
[*]<center><form enctype="multipart/form-data" method="post" name="upform">
[*]上传文件: <br><br><br>
[*]<input name="upfile" type="file" style="width:200;border:1 solid #9a9999; font-size:9pt; background-color:#ffffff" size="17">
[*]<input type="submit" value="上传" style="width:30;border:1 solid #9a9999; font-size:9pt; background-color:#ffffff" size="17"><br><br><br>
[*]允许上传的文件类型为:jpg|jpeg|png|pjpeg|gif|bmp|x-png|swf <br><br>
[*]<a href="index.php">返回</a>
[*]</form>
[*]<?php
[*]if ($_SERVER['REQUEST_METHOD'] == 'POST')
[*]{
[*]if (!is_uploaded_file($_FILES["upfile"]))
[*]//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"], $uptypes))
[*]//检查文件类型
[*]{ // www.jbxue.com
[*]echo "<font color='red'>只能上传图像文件或Flash！</font>";
[*]exit;
[*]}
[*]
[*]if(!file_exists($destination_folder))
[*]mkdir($destination_folder);
[*]
[*]$filename=$file["tmp_name"];
[*]$image_size = getimagesize($filename);
[*]$pinfo=pathinfo($file["name"]);
[*]$ftype=$pinfo;
[*]$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=$pinfo;
[*]echo " <font color=red>已经成功上传</font><br>文件名: <font color=blue>".$destination_folder.$fname."</font><br>";
[*]echo " 宽度:".$image_size;
[*]echo " 长度:".$image_size;
[*]if($watermark==1)
[*]{
[*]$iinfo=getimagesize($destination,$iinfo);
[*]$nimage=imagecreatetruecolor($image_size,$image_size);
[*]$white=imagecolorallocate($nimage,255,255,255);
[*]$black=imagecolorallocate($nimage,0,0,0);
[*]$red=imagecolorallocate($nimage,255,0,0);
[*]imagefill($nimage,0,0,$white);
[*]
[*]switch ($iinfo)
[*]{
[*]case 1:
[*]$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,$image_size);
[*]imagefilledrectangle($nimage,1,$image_size-15,80,$image_size,$white);
[*]
[*]switch($watertype)
[*]{
[*]case 1: //加水印字符串
[*]imagestring($nimage,2,3,$image_size-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;
[*]} //编辑： www.jbxue.com
[*]switch ($iinfo)
[*]{
[*]case 1:
[*]//imagegif($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=".($image_size*$imgpreviewsize)." height=".($image_size*$imgpreviewsize);
[*]echo " alt=/"图片预览:/r文件名:".$destination."/r上传时间:/" border='0'></a>";
[*]}
[*]}
[*]?>
[*]</center>
[*]</body>
[*]</html>
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