Excel wrapper

A wrapper for a streaming excel-writer.

Contacts: Richard Klees

Writing files

An excel-write has to implement a kind of functionality as defined.

• Create a writer object
• Define style for single column at any time
• Fill the sheet row by row
• Create new sheets and switch by name
• Save to given folder and filename

To fill the sheet row by row is a recommended feature to increase the speed on mass export of data. It will not be possible to step back to rows or single columns to change values or something else.

public function addRow(array $values) {
    $this->writer->addRow($values);
}

For designing the sheet, it is possible to give any column at any time a new style. E.g. in row 1 to 5 the colum A is bold and left orientated. Starting with row 6 it will only left orientated and not longer bold. This gives the opportunity to design column headers or highlight special values.

public function setColumnStyle(Style $style, $column) {
    $this->writer->setColumnStyle($column, $style);
};

It is possible to create new sheets and switch them by name. If you creating a new sheet, it will be automaticly the current.

public function createSheet($name) {
    $this->writer->createSheet($name);
}

Public function selectSheet($name) {
    $this->writer->setCurrentSheet($name);
}

Define Styles

A column can be styled in a lot of ways. This wrapper includes the mostly used.

• Font family
• Font size
• Bold
• Italic
• Underline
• Text color
• Background color
• Orientation
• Border
• Border color

public function getNewStyle() {
    $style = new Style();
    $style ->setFontFamily('Aarial')
           ->setFontSize(12)
           ->setItalic(false)
           ->setBorder(Style::TOP);

    return $style;
}

Example for use

This is a small example for using this wrapper.

public function exportData($file_name, $file_path, array $header, array $values) {
    $writer = new Writer();
    $writer->setFileName($file_name);
    $writer->setPath($file_path);

    $header_style = $this->getHeaderStyle();
    $writer->setColumnStyle('A', $header_style);
    $write->addRow($header);

    $bold_style = $this->getBoldStyle();
    $basic_style = $this->getBasicStyle();

    $writer->setColumnStyle('A', $bold_style);
    $writer->setColumnStyle('B', $basic_style);
    foreach($values as $value) {
        $write->addRow($value);
    }

    $writer->setColumnStyle('A', $basic_style);
    $writer->setColumnStyle('B', $bold_style);
    foreach($values as $value) {
        $write->addRow($value);
    }

    $writer->saveFile();
    $write->close();
}

protected function getHeaderStyle() {
    $style = new Style()
    $style->setBold(true)
          ->setItalic(true);

    return $style;
}

protected function getBoldStyle() {
    $style = new Style()
    $style->setBold(true)

    return $style;
}

protected function getBsicStyle() {
    return new Style();
}

The xlsx sheet result might be look like this.

R\C	A	B
1	Content for header
2	Content in the first column	Content in the second column
3	Content in the first column	Content in the second column
4	Content in the first column	Content in the second column
5	Content in the first column	Content in the second column