Example of uploading and watermarking php images
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Regarding the example code of PHP image uploading and PHP watermarking, a complete PHP image uploading example, friends who need it can refer to it.
1.send.html <html> <head> <title>File Uploader</title> <meta charset="utf-8"> </head> <body> <h3 id="File-Upload">File Upload</h3> Select a file to upload:<br> <form action="img_receive.php" method="post" enctype="multipart/form-data"> <input type="file" name="upfile" size="45"> <br> <input type="submit" value="Upload File"> </form> </body> </html> Copy after login 2, receive img_receive.php
<meta charset="utf-8">
<?php
//上传文件类型列表
$uptypes=array(
'image/jpg',
'image/jpeg',
'image/png',
'image/pjpeg',
'image/gif',
'image/bmp',
'image/x-png'
);
$max_file_size=2000000; //上传文件大小限制, 单位BYTE
$destination_folder="up/"; //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://jbxue.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,其他为不生成);
$imgpreviewsize=1/2; //缩略图比例
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
if (!is_uploaded_file($_FILES["upfile"]['tmp_name']))
//是否存在文件
{
echo "图片不存在!";
exit;
}
$file = $_FILES["upfile"];
if($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($destination_folder))//检查目标文件是否存在
{
mkdir($destination_folder);
}
$filename=$file["tmp_name"];//文件上传的临时文件名
$image_size = getimagesize($filename);//专业获取图片大小的方法是一个数组
$pinfo=pathinfo($file["name"]);//获取客户端储存文件的地址，是一个数组
$ftype=$pinfo['extension'];//从该数组中获取文件的扩展名
$destination = $destination_folder.time().".".$ftype;//目标文件起名为当前时间＋扩展名
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);//获取目标文件地址
$fname=$pinfo[basename];//获取基础文件名，包括了扩展名
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)//1为添加水印
{
$iinfo=getimagesize($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]-15,80,$image_size[1],$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 "<img src=\"".$destination."\" style="max-width:90%" height=".($image_size[1]*$imgpreviewsize);
echo " alt=\"图片预览:\r文件名:".$destination."\r上传时间:\">";
}
}Copy after login |
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