CCNA, CCNP, MCSA, CCNA Final Exam, All Answer Test Module With 100/100

I want to create thumbnail image for top posts automaticly. So I decided to resize current image of post with small sizes for using it as tumbnail using this - resize-class.php class and wrote the code like this: // Include the class include("resize-class.php"); $top_posts = mysql_query("In this query I select top posts - the most viewed posts of the day") while ($row = mysql_fetch_array($top_posts)){ $post_id = $row['post_id']; // defining the ID of the post as variable $post_image = $row['post_image']; //defining the image of the post as variable //save image $resizeObj = new resize($post_image); // Initialise - load image $resizeObj -> resizeImage(260, 210, 'exact'); // resizing $post_image with 'exact' option $resizeObj -> saveImage('images/'.$post_id.'.jpg', 80); // saving thumbnail of $post_image to the storage } But returns the errors in loop like this: Warning: imagesx() ex