Question

I had the below code that load image from DB. There are more than 600 rows of image has been inserted into the DB. I need the script that can perform these action:

Step 1) Load the image from DB
Step 2) process the image by putting the watermark
Step 3) Output the image to the browser.

I had the below code, that load and show the image. but I don’t have any idea how to do the watermark.

$dbconn = @mysql_connect($mysql_server,$mysql_manager_id,$mysql_manager_pw) or exit("SERVER Unavailable"); 
@mysql_select_db($mysql_database,$dbconn) or exit("DB Unavailable"); 

$sql = "SELECT type,content FROM upload WHERE id=". $_GET["imgid"]; 

$result = @mysql_query($sql,$dbconn) or exit("QUERY FAILED!"); 

$contenttype = @mysql_result($result,0,"type"); 
$image = @mysql_result($result,0,"content"); 


header("Content-type: $contenttype"); 
echo $image;

mysql_close($dbconn); 

?>

Please help…

Answer 1

Finally I get the solution, here is the code:

<?php

$dbconn = @mysql_connect($mysql_server,$mysql_manager_id,$mysql_manager_pw) or exit("SERVER Unavailable"); 
@mysql_select_db($mysql_database,$dbconn) or exit("DB Unavailable"); 

$sql = "SELECT id, original_name, type, content FROM upload WHERE id=". $_GET["imgid"]; 

$result = @mysql_query($sql,$dbconn) or exit("QUERY FAILED!"); 

$fileID = @mysql_result($result,0,"id");
$contenttype = @mysql_result($result,0,"type"); 
$filename = @mysql_result($result,0,"original_name");
$image = @mysql_result($result,0,"content"); 


$fileXtension = pathinfo($filename, PATHINFO_EXTENSION);
$finalFileName = $fileID.".".$fileXtension;

// put the file on temporary folder
$filePutPath = "/your/temporary/folder/".$finalFileName;

// put the contents onto file system
file_put_contents($filePutPath, $image);


// get the watermark image
$stamp = imagecreatefrompng('../images/watermark.png');

switch($fileXtension)
{
  case 'JPEG':
  case 'JPG' :
  case 'jpg' :
  case 'jpeg':
    $im = imagecreatefromjpeg($filePutPath);
  break;

  case 'gif' :
  case 'GIF' :
    $im = imagecreatefromgif($filePutPath);
  break;

  case 'png' :
  case 'PNG' :
    $im = imagecreatefromgif($filePutPath);
  break;

  default :
  break;
}

list($width, $height) = getimagesize($filePutPath);

// set area for the watermark to be repeated
imagecreatetruecolor($width, $height);

// Set the tile (Combine the source image and the watermark image together)
imagesettile($im, $stamp);

// Make the watermark repeat the area
imagefilledrectangle($im, 0, 0, $width, $height, IMG_COLOR_TILED);


header("Content-type: $contenttype"); 

// free the memory
imagejpeg($im);
imagedestroy($im);

// delete the file on temporary folder
unlink($filePutPath);

mysql_close($dbconn); 
?>