* @param $dataStream The data stream we shall write to the file
* @return mixed Number of writes bytes or false on error
*/
- public function writeToFile ($dataStream) {
+ public function writeToFile (string $dataStream) {
// Validate the pointer
$this->validateFilePointer();
* @param $data Data to be written
* @return mixed Number of writes bytes or false on error
*/
- public function writeAtPosition ($seekPosition, $data) {
+ public function writeAtPosition (int $seekPosition, string $data) {
// First seek to it
$this->seek($seekPosition);
* @param $bytes Amount of bytes to read
* @return $data Data read from file
*/
- public function read ($bytes = NULL) {
+ public function read (int $bytes = NULL) {
// Validate the pointer
$this->validateFilePointer();