php 图片上传代码,支持水印,缩略图
此代码可以为上传的图片加水印同时还可以比例缩放图片,有需要的朋友可以参考一下,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',
'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 = 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 = "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);
$imgpreviewsize = 1 / 2; //缩略图比例
?>
<html>
<head>
<title>M4U BLOG - fywyj.cn</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css">body,td{font-family:tahoma,verdana,arial;font-size:11px;line-height:15px;background-color:white;color:#666666;margin-left:20px;}
strong{font-size:12px;}
aink{color:#0066CC;}
a:hover{color:#FF6600;}
aisited{color:#003366;}
a:active{color:#9DCC00;}
table.itable{}
td.irows{height:20px;background:url("index.php?i=dots" repeat-x bottom}</style>
</head>
<body>
<center><form enctype="multipart/form-data" method="post" name="upform">
上传文件: <br><br><br>
<input name="upfile" type="file" style="width:200;border:1 solid #9a9999; font-size:9pt; background-color:#ffffff" size="17">
<input type="submit" value="上传" style="width:30;border:1 solid #9a9999; font-size:9pt; background-color:#ffffff" size="17"><br><br><br>
允许上传的文件类型为:jpg|jpeg|png|pjpeg|gif|bmp|x-png|swf <br><br>
<a href="index.php">返回</a>
</form>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if (!is_uploaded_file($_FILES["upfile"][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"], $uptypes))
//检查文件类型
{
echo "<font color='red'>只能上传图像文件或Flash！</font>";
exit;
}
if (!file_exists($destination_folder)) mkdir($destination_folder);
$filename = $file["tmp_name"];
$image_size = getimagesize($filename);
$pinfo = pathinfo($file["name"]);
$ftype = $pinfo[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>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:" . $image_size[1];
if ($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:" . $destination . "\r上传时间:\" border='0'></a>";
}
}
?>
</center>
</body>
</html>文章网址:http://www.phprm.com/tuxiang/fs4429.html
随意转载^^但请附上教程地址。