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PHP image watermarker with file system cache

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Image Watermarker with file system cache

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  1. <?php  
  2. //ini_set('max_execution_time', 300);
  3. header('content-type: image/jpeg');  
  4. header('Cache-control: max-age='.(60*60*24*365));
  5. header('Expires: '.gmdate(DATE_RFC1123,time()+60*60*24*365));
  6. $cache_file = "./img/". hash('md5', $_GET['src']).".jpg";
  7.  
  8. if (file_exists($cache_file)) { //CACHE HIT
  9. 	header('Last-Modified: '.gmdate(DATE_RFC1123,filemtime($cache_file)));
  10. 	echo(file_get_contents($cache_file));
  11.  
  12. } else { //CACHE MISS	
  13.  
  14. 	$watermark = imagecreatefrompng("watermarkd.png");  
  15. 	$watermark_width = imagesx($watermark);  
  16. 	$watermark_height = imagesy($watermark);
  17. 	$image = imagecreatetruecolor($watermark_width, $watermark_height);  
  18. 	$image = imagecreatefromjpeg($_GET['src']);  
  19. 	$size = getimagesize($_GET['src']); 
  20. 	$dest_x = $size[0] - $watermark_width - 5;  
  21. 	$dest_y = $size[1] - $watermark_height - 5;  
  22. 	imagecopy($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height);  
  23. 	imageinterlace($image, true);
  24. 	imagejpeg($image,$cache_file,100);   
  25. 	echo(file_get_contents($cache_file));
  26. 	imagedestroy($watermark);
  27. 	imagedestroy($image);
  28. }
  29. exit();
  30. ?>

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