PHP classic watermarking program for pictures_PHP tutorial

/***************************************************** **********

Parameter description:
$max_file_size: Upload file size limit, unit BYTE
$destination_folder: Upload file path
$watermark: Whether to attach a watermark (1 is watermarked, others are not watermarked);

Instructions for use:
1. Remove the ; sign in front of the "extension=php_gd2.dll" line in the PHP.INI file, because we To use the GD library;
2. Change extension_dir = to the directory where your php_gd2.dll is located;
**************************** ****************************************/

//Upload file type list
$uptypes=array(
'image/jpg',
'image/ jpeg',
'image/png',
'image/pjpeg',
'image/gif',
'image/bmp',
'image/x-png'
);

$max_file_size=2000000; //Upload file size limit, unit BYTE
$destination_folder="uploadimg/"; //Upload file path
$watermark=1; // Whether to add a watermark (1 means watermark, others do not add watermark);
$watertype=1; //Watermark type (1 is text, 2 is picture)
$waterposition=1; //Watermark position ( 1 is the lower left corner, 2 is the lower right corner, 3 is the upper left corner, 4 is the upper right corner, 5 is in the center);
$waterstring="http://www.mop8.com/"; //Watermark string
$waterimg="xplore.gif"; //Watermark image
$imgpreview=1; //Whether to generate a preview image (1 is generated, others are not generated);
$imgpreviewsize=1/1; //Thumbnail ratio
?>

Upload file:
< ;input name="upfile" type="file">

The file types allowed to be uploaded are:

This demonstration space is provided by TuWoo, and this program uses text watermarks.< ;/FONT>
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
if (!is_uploaded_file($_FILES[" upfile"][tmp_name]))
//Does the file exist?
{
echo "The picture does not exist!";
exit;
} _FILES["upfile"];
if($max_file_size < $file["size"])
//Check the file size
{
echo "The file is too large!";
exit;
}

if(!in_array($file["type"], $uptypes))
//Check the file type
{
echo "The file type does not match! ".$file["type"];
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 "The file with the same name already exists";
exit;
} 

if(!move_uploaded_file ($filename, $destination))
{ echo "Error moving file";
exit;
}

$pinfo=pathinfo($destination);
$fname=$pinfo[basename];
echo " Uploaded successfully
File name: < ;font color=blue>".$destination_folder.$fname."
";
echo " width:".$image_size[0];
echo " length:". $image_size[1];
echo "
size:".$file["size"]." bytes";

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); > case 6:
$simage =imagecreatefromwbmp($ destination);
break;
default:
die("Unsupported file type");
exit;
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($imgpreview==1)  
   {  
   echo "
图片预览:
";  
   echo "   echo " alt="图片预览:r文件名:".$destination."r上传时间:">";  
   }  
}  
?>  
  

http://www.bkjia.com/PHPjc/317296.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/317296.htmlTechArticle?php /************************************************************** 参数说明: $max_file_size:上传文件大小限制,单位BYTE $destination_folder:上传文件路径 $waterma...