var ft = new FileTransfer(),
            options = new FileUploadOptions();
            options.fileKey = "photo";
            options.fileName = 'test.jpg';
            options.mimeType = "image/jpg";
            options.httpMethod = "POST";
            options.chunkedMode = false;

            var server = "https://myserver_url.php/upload";
            ft.upload(imageData, encodeURI(server) , win, fail, options, true);
            function win(information_back) {
            console.log('upload complete');
            }
            function fail(message) {
            console.log('upload failed: ' + JSON.stringify(message));
            }

window.resolveLocalFileSystemURL(imageData, fileExists,fileDoesNotExist);
            function fileExists(fileEntry){
            alert("File " + fileEntry.fullPath + " exists!");
            }
            function fileDoesNotExist(){
            alert("file does not exist");
            }