PHP code to upload files and add text and image watermarks

/***************************************
Parameter description:
$max_file_size: Upload file size limit, unit BYTE
$destination_folder: Upload file path
$watermark: Whether to attach a watermark (1 means adding watermark, others means not adding watermark);
Instructions for use:
1. Change the PHP.INI file Remove the ; sign in front of the line "extension=php_gd2.dll" because we need 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; //About 2M, upload file size limit, unit BYTE
$destination_folder="uploadimg/"; //Upload file path
$watermark=1; //Whether to attach a watermark (1 is watermarked, others are not watermarked);
$watertype=1; //Watermark type (1 is text, 2 is picture)
$waterposition=1; //Watermark position (1 is the lower left corner, 2 is Lower right corner, 3 is the upper left corner, 4 is the upper right corner, 5 is the center);
$waterstring="JYS studio"; //Watermark string
$waterimg="xplore.gif";//Watermark image
$imgpreview= 1; //Whether to generate a preview image (1 means generate, others do not generate);
$imgpreviewsize=1/2; //Thumbnail ratio
?>



<li><style type="text/css"><li><!--<li>body<li>{<li> font-size: 9pt;<li>}<li>input<li>{<li> background-color : yellow;<li> border: 1px inset #CCCCCC;<li>}<li>--><li></style></li>
<li>
<li>
<li><form enctype="multipart/form-data" method="post" name="upform">
<li> Upload file:</li>
<li> <input name="upfile" type="file">
</li>
<li> <input type="submit" value="Upload"><br> </li>
<li> The file types allowed to be uploaded are: =implode(', ',$uptypes)?> <!--Concatenate the elements in the uptypes array with ',' to form a string and return it-->
</li>
<li>< ;/form></li>
<li>
<?php <li>if ($_SERVER['REQUEST_METHOD'] == 'POST')</li>
<li>{</li>
<li> //Does the file exist? </li>
<li> if (!is_uploaded_file($_FILES["upfile"][tmp_name]) )</li>
<li> {</li>
<li> echo "The picture does not exist!";</li>
<li> exit;</li>
<li> }</li>
<li> $file = $_FILES["upfile"];</li>
<li> //Check the file size</li>
<li><p> if($max_file_size < ; $file["size"])</p></li>
<li> {</li>
<li> echo "The file is too big! Cannot exceed 2M! ";</li>
<li> exit;</li>
<li> }</li>
<li><p> //Check the file type</p></li>
<li> if(!in_array($file["type"], $uptypes))</li>
<li> {</li>
<li> echo "The file type does not match!" .$file["type"];</li>
<li> exit;</li>
<li> } </li>
<li><p> //If the uploaded folder does not exist, it will be automatically created</p></li>
<li> if(!file_exists($destination_folder))</li>
<li> {</li>
<li> mkdir ($destination_folder);</li>
<li> }</li>
<li><p> $filename=$file["tmp_name"]; //The temporary file name automatically generated by the system</p></li>
<li> $filenamecustom = $file["name"]; / /The file name uploaded by the user</li>
<li> $image_size = getimagesize($filename); //Image size</li>
<li> $pinfo=pathinfo($file["name"]); //The path information of the uploaded file</li>
<li> $ftype=$pinfo[' extension']; //The extension of the uploaded file</li>
<li> //$destination = $destination_folder.time().".".$ftype;//The directory + file name + file type of the uploaded file, the file name is determined by time() Generate </li>
<li> $destination = $destination_folder.$filenamecustom.".".$ftype;//Directory of uploaded file + user file name + file type</li>
<li><p> //Check whether the file with the same name exists</p></li>
<li> if (file_exists($destination) && $overwrite != true)</li>
<li> {</li>
<li> echo "The file with the same name already exists";</li>
<li> exit;</li>
<li> } </li>
<li><p> //Move the file to the specified directory</p></li>
<li> if( !move_uploaded_file ($filename, $destination))</li>
<li> {</li>
<li> echo "Error moving file";</li>
<li> exit;</li>
<li> }</li>
<li><p> $pinfo=pathinfo($destination); //Upload to the server The path information of the file</p></li>
<li> $fname=$pinfo[basename]; //The file name uploaded to the server</li>
<li> // echo " <font color="red"> has been successfully uploaded!</font><br>File name: <font color="blue">".$destination_folder.$fname."</font><br>";</li>
<li><p> / / echo " <font color="red"> Uploaded successfully! </font><br>File name: <font color="blue">".$destination."</font><br>";</p></li>
<li> echo " <font color="red"> Uploaded successfully! </font><br>File name: <font color="blue">".$destination_folder.$filenamecustom."</font><br>";</li>
<li> echo " Width:".$image_size[0 ];</li>
<li> echo " length: ".$image_size[1];</li>
<li> echo "<br> size: ".$file["size"]." bytes";</li>
<li> if($watermark==1)</li>
<li> {</li>
<li> $iinfo=getimagesize($destination,$iinfo); //Get the image size and type</li>
<li> $nimage=imagecreatetruecolor($image_size[0],$image_size[1]); //Create a true color image and return an image identifier Symbol, </li>
<li> //Represents a black image of size x_size and y_size </li>
<li> $white=imagecolorallocate($nimage,255,255,255); //nimage assigns color </li>
<li> $black=imagecolorallocate($nimage,0,0,0). ;</li>
<li> $red=imagecolorallocate($nimage,255,0,0);</li>
<li> imagefill($nimage,0,0,$white); //The coordinates x, y of the nimage image (the upper left corner of the image is 0, 0) Use color color to perform area filling </li>
<li> // (that is, points with the same color as the x, y point and adjacent points will be filled) </li>
<li> /*</li>
<li> 1 = GIF, 2 = JPG, 3 = PNG, 4 = SWF, 5. = PSD, 6 = BMP, 7 = TIFF (intel byte order), 8 = TIFF (motorola byte order), </li>
<li> 9 = JPC, 10 = JP2, 11 = JPX, 12 = JB2, 13 = SWC, 14 = IFF, 15 = WBMP, 16 = XBM</li>
<li> */ </li>
<li> switch ($iinfo[2])</li>
<li> {</li>
<li> case 1:</li>
<li> $simage =imagecreatefromgif($destination); //The image obtained from the given file name</li>
<li> break;</li>
<li> case 2:</li>
<li> $simage =imagecreatefromjpeg($destination);</li>
<li> break;</li>
<li> case 3:</li>
<li> $simage =imagecreatefrompng($destination);</li>
<li> break;</li>
<li> case 6:</li>
<li> $simage =imagecreatefromwbmp($destination);</li>
<li> break; </li>
<li> default:</li>
<li> die("Unsupported file type"); //Equivalent to exit()</li>
<li> exit;</li>
<li> }</li>
<li> imagecopy($nimage,$simage,0,0,0,0,$image_size[0], $image_size[1]);//Copy simage starting from 0,0, $image_size[0] width, $image_size[1] height </li>
<li> //Copy a part of simage to the position with coordinates 0,0 in nimage p></li>
<li><p> imagefilledrectangle($nimage,1,$image_size[1]-15,80,$image_size[1],$white);//Draw an upper left corner coordinate of 1 in the nimage image with white color , $image_size[1]-15</p></li>
<li> //Rectangle with lower right corner coordinates 80, $image_size[1]</li>
<li> switch($watertype)</li>
<li> {</li>
<li> case 1: //Add watermark string</li>
<li> imagestring($nimage,2, 3,$image_size[1]-15,$waterstring,$black);//Draw the waterstring in black to the 3,$image_size[1]-15 coordinates of nimage, and the font is the built-in font 2</li>
<li> break;</li>
<li> case 2 : //Add watermark image</li>
<li> $simage1 =imagecreatefromgif("xplore.gif");</li>
<li> imagecopy($nimage,$simage1,0,0,0,0,85,15);</li>
<li> imagedestroy($simage1); // Release the memory associated with simagel</li>
<li> break;</li>
<li> }</li>
<li> switch ($iinfo[2])</li>
<li> {</li>
<li> case 1:</li>
<li> //imagegif($nimage, $destination);</li>
<li> imagejpeg($nimage, $destination); // Creates a JPEG image with destination as the file name from the nimage image. The nimage parameter is the return value of the imagecreatetruecolor() function. </li>
<li> break;</li>
<li><p> case 2:</p></li>
<li> imagejpeg($nimage, $destination);</li>
<li> break;</li>
<li><p> case 3:</p></li>
<li> imagepng($nimage, $destination) );</li>
<li> break;</li>
<li><p> case 6:</p></li>
<li> imagewbmp($nimage, $destination);</li>
<li> //imagejpeg($nimage, $destination);</li>
<li> break;</li>
<li> }</li>
<li> //Release memory </li>
<li> imagedestroy($nimage);</li>
<li> imagedestroy($simage);</li>
<li> }</li>
<li> if($imgpreview==1)</li>
<li> {</li>
<li> echo "<br>Image preview:<br>";</li>
<li> echo "<img src="" .    style="max-width:90%" height=".($image_size[1]*$imgpreviewsize);<li> echo " alt="Image preview:r File name: " time:>";</li>
<li> }</li>
<li>}</li>
<li>?></li>
<li>
<li>
<li>
</form></li>