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rotating avatars

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  1. /*
  2. rotating avatars
  3. create a directory on your webserver, call it avatars and put a few avatars in it, along with this file. (index.php)
  4. ( make sure the avatars are about the same size, and preferably square ( width == height ) )
  5. check http://www.yourdomain.com/avatars/ to see the result. Refresh the page to see another avatar.
  6. */
  7.  
  8. function listImages ( )//reads images in current directory, returns array with filenames
  9. {
  10. 	$allowed_extensions = array ( ".jpg", ".png", ".gif" );
  11. 	$dir = opendir ( getcwd ( ) );
  12. 	while ( $file = readdir ( $dir ) )
  13. 	{
  14. 		$extension = strtolower ( substr ( $file, strlen ( $file ) - 4, strlen ( $file ) ) );
  15. 		if ( in_array ( $extension, $allowed_extensions ) ) $linklist[] = $file;
  16. 	}
  17. 	closedir ( $dir );
  18. 	return $linklist;
  19. }
  20. function mkImg ( $file, $ftype )//returns an image with filetype $ftype, sourceimage is $file
  21. {
  22. 	$img = imagecreatefromstring ( file_get_contents ( $file ) );
  23.  	switch ( $ftype )
  24.  	{
  25. 		case ".jpg":
  26. 			header('Content-Type: image/jpg');
  27. 			imagejpeg($img);
  28. 			break;
  29. 		case ".gif":
  30. 			header('Content-Type: image/gif');
  31. 	  		imagegif($img);
  32. 			break;
  33. 		case ".png":
  34. 		default:
  35. 			header('Content-Type: image/png');
  36. 	  		imagepng($img);
  37. 			break;
  38. 	}
  39. }
  40. //read the images in the current directory
  41. $images = listImages ( );
  42. //pick a random one
  43. $rnd = $images[array_rand ( $images )];
  44. //for use on forums -> link to /path/to/index.php?ftype=.jpg (fools SOME forum software into thinking it's a jpg)
  45. $ftype = $_REQUEST['ftype'] ? $_REQUEST['ftype'] : ".png";
  46. //return the randomly picked image
  47. mkImg ( $rnd, $ftype );

URL: http://www.poehey.nl/media/img/avatars/

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