protected function startSheet()
    {
        $this->sheetFilePointer = fopen($this->worksheetFilePath, 'w');
        $this->throwIfSheetFilePointerIsNotAvailable();

        fwrite($this->sheetFilePointer, self::SHEET_XML_FILE_HEADER);
        fwrite($this->sheetFilePointer, '<sheetData>');
    }
protected function startSheet()
    {
        $this->sheetFilePointer = fopen($this->worksheetFilePath, 'w');
        $this->throwIfSheetFilePointerIsNotAvailable();

        fwrite($this->sheetFilePointer, self::SHEET_XML_FILE_HEADER);
        fwrite($this->sheetFilePointer, '<sheetData>');
    }
protected function startSheet ( ) { $ this -> sheetFilePointer = fopen ( $ this -> worksheetFilePath , 'w' ) ; $ this -> throwIfSheetFilePointerIsNotAvailable ( ) ; fwrite ( $ this -> sheetFilePointer , self :: SHEET_XML_FILE_HEADER ) ; fwrite ( $ this -> sheetFilePointer , '<sheetData>' ) ; }
Prepares the worksheet to accept data

@return void
@throws \Box\Spout\Common\Exception\IOException If the sheet data file cannot be opened for writing
Prepares the worksheet to accept data