Upon uploading a file from my web page, the dialog appears “No upload”, after the file uploads successfully. Any help with showing the correct message is appreciated.
    <?php
    foreach (array('video', 'audio') as $type) {
    if (isset($_FILES["${type}-blob"])) {
        $fileName = $_POST["${type}-filename"];
       $uploadDirectory = 'uploads/' . $fileName;
            // make sure that one can upload only allowed audio/video files
            $allowed = array(
                'webm',
                'wav',
                'mp4',
                'mov'
    );
    $extension = pathinfo($uploadDirectory, PATHINFO_EXTENSION);
    if (!$extension || empty($extension) || !in_array($extension, $allowed)) {
        echo 'Invalid file extension: '.$extension;
        return;
    }
    $new_filepath = "uploads/" . uniqid() . ".". $extension;
    if (!move_uploaded_file($_FILES["${type}-blob"]["tmp_name"], $new_filepath)) {
         echo (" problem moving uploaded file");
       }
    if(!file_exists($_FILES["${type}-blob"]["tmp_name"]) || 
    !is_uploaded_file($_FILES["${type}-blob"]["tmp_name"])) {
    echo 'No upload';
    }
    }
    }
    ?>And here’s the corresponding js:
                         function uploadFile() {
                          // create FormData
                           var fileType = 'video'; // or "audio"
                           var fileName = 'vid.webm';
                           var formData = new FormData();
                           var request = new XMLHttpRequest;
                           formData.append(fileType + '-filename', fileName);
                           formData.append(fileType + '-blob', blob);
                          request.open("POST", "/save1.php");
                      request.onreadystatechange = function() {
    		 if(request.readyState==4) {
    		 alert(request.responseText);
    		 }
    		}
                request.send(formData);
           }