public function decodeDisposalMethod()
    {
        if ($this->graphicsControlExtension) {
            $byte = substr($this->graphicsControlExtension, 1, 1);
            $byte = unpack('C', $byte)[1];
            $method = $byte >> 2 & bindec('00000111');

            return $method;
        }

        return 0;
    }
public function decodeDisposalMethod()
    {
        if ($this->graphicsControlExtension) {
            $byte = substr($this->graphicsControlExtension, 1, 1);
            $byte = unpack('C', $byte)[1];
            $method = $byte >> 2 & bindec('00000111');

            return $method;
        }

        return 0;
    }
public function decodeDisposalMethod ( ) { if ( $ this -> graphicsControlExtension ) { $ byte = substr ( $ this -> graphicsControlExtension , 1 , 1 ) ; $ byte = unpack ( 'C' , $ byte ) [ 1 ] ; $ method = $ byte >> 2 & bindec ( '00000111' ) ; return $ method ; } return 0 ; }
Decodes disposal method of frame

@return integer
Decodes disposal method of frame