Generuje sobie miniaturkę... Wszystko jest super ekstra do chwili kiedy podglądam sobie plik a tu... BLACK, nie ma nic tylko czarny ekran...

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function miniaturka( $source_file, $destination_file, $max_dimension)
{
   list($img_width,$img_height) = getimagesize($source_file); // Get the original dimentions
   $aspect_ratio = $img_width / $img_height;
 
   if ( ($img_width > $max_dimension) || ($img_height > $max_dimension) ) // If either dimension is too big...
   {
       if ( $img_width > $img_height ) // For wide images...
       {
           $new_width = $max_dimension;
           $new_height = $new_width / $aspect_ratio;
       }
       elseif ( $img_width < $img_height ) // For tall images...
       {
           $new_height = $max_dimension;
           $new_width = $new_height * $aspect_ratio;
       }
       elseif ( $img_width == $img_height ) // For square images...
       {
           $new_width = $max_dimension;
           $new_height = $max_dimension;
       }
       else { echo "Error reading image size."; return FALSE; }
   }
   else { $new_width = $img_width; $new_height = $img_height; } // If it's already smaller, don't change the size.
 
   // Make sure these are integers.
   $new_width = intval($new_width);
   $new_height = intval($new_height);
 
   $thumbnail = imagecreatetruecolor($new_width,$new_height); // Creates a new image in memory.
 
   // The following block retrieves the source file.  It assumes the filename extensions match the file's format.
   if ( strpos($source_file,".gif") ) { $img_source = imagecreatefromgif($source_file); }
   if ( (strpos($source_file,".jpg")) || (strpos($source_file,".jpeg")) )
   { $img_source = imagecreatefromjpeg($source_file); }
   if ( strpos($source_file,".bmp") ) { $img_source = imagecreatefromwbmp($source_file); }
   if ( strpos($source_file,".png") ) { $img_source = imagecreatefrompng($source_file); }
 
   // Here we resample and create the new jpeg.
   imagecopyresampled($thumbnail, $img_source, 0, 0, 0, 0, $new_width, $new_height, $img_width, $img_height);
   imagejpeg( $thumbnail, $destination_file, 100 );
 
   // Finally, we destroy the two images in memory.
   imagedestroy($img_source);
   imagedestroy($thumbnail);
} 
[PHP] pobierz, plaintext 

Wie ktoś co może być tego powodem...