GENERATING THUMBNAIL IMAGES $result = ‘Problem copying original’; (Web page design)
GENERATING THUMBNAIL IMAGES $result = ‘Problem copying original’; } else { // calculate the dimensions of the thumbnail $thumb_width = round($width * $ratio); $thumb_height = round($height * $ratio); // create an image resource for the thumbnail $thumb = imagecreatetruecolor($thumb_width, $thumb_height); // create the resized copy imagecopyresampled($thumb, $source, 0, 0, 0, 0, $thumb_width, . $thumb_height, $width, $height); // save the resized copy switch($type) { case 1: if (function_exists(’imagegif’)) { $success = imagegif($thumb, THUMBS_DIR.$name.’_thb.gif’); $thumb_name = $name.’_thb.gif’; } else { $success = imagejpeg($thumb, THUMBS_DIR.$name.’_thb.jpg’,50); $thumb_name = $name.’_thb.jpg’; } break; case 2: $success = imagejpeg($thumb, THUMBS_DIR.$name.’_thb.jpg’, 100); $thumb_name = $name.’_thb.jpg’; break; case 3: $success = imagepng($thumb, THUMBS_DIR.$name.’_thb.png’); $thumb_name = $name.’_thb.png’; } if ($success) { $result = “$thumb_name created”; } else { $result = ‘Problem creating thumbnail’; } // remove the image resources from memory imagedestroy($source); imagedestroy($thumb); } } ?> As the script now stands, it looks for the name of an image submitted from a form as $_POST[’pix’], and located on the server in whatever you have defined as SOURCE_DIR. To create a thumbnail from an uploaded image, you need to adapt the script so that it processes the temporary upload file. 225
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