class Excel_XML in Views Excel Export 6

Generating excel documents on-the-fly from PHP5

Uses the excel XML-specification to generate a native XML document, readable/processable by excel.

@package Utilities @subpackage Excel @author Oliver Schwarz <[e-mail]> @version 1.1

@todo Issue #4: Internet Explorer 7 does not work well with the given header @todo Add option to give out first line as header (bold text) @todo Add option to give out last line as footer (bold text) @todo Add option to write to file

Hierarchy

• class \Excel_XML

File

libs/php-excel.class.php, line 28

class Excel_XML {

  /**
   * Header (of document)
   * @var string
   */
  private $header = "<?xml version=\"1.0\" encoding=\"%s\"?\\>\n<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:x=\"urn:schemas-microsoft-com:office:excel\" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:html=\"http://www.w3.org/TR/REC-html40\">";

  /**
   * Footer (of document)
   * @var string
   */
  private $footer = "</Workbook>";

  /**
   * Lines to output in the excel document
   * @var array
   */
  private $lines = array();

  /**
   * Used encoding
   * @var string
   */
  private $sEncoding;

  /**
   * Convert variable types
   * @var boolean
   */
  private $bConvertTypes;

  /**
   * Worksheet title
   * @var string
   */
  private $sWorksheetTitle;

  /**
   * Constructor
   *
   * The constructor allows the setting of some additional
   * parameters so that the library may be configured to
   * one's needs.
   *
   * On converting types:
   * When set to true, the library tries to identify the type of
   * the variable value and set the field specification for Excel
   * accordingly. Be careful with article numbers or postcodes
   * starting with a '0' (zero)!
   *
   * @param string $sEncoding Encoding to be used (defaults to UTF-8)
   * @param boolean $bConvertTypes Convert variables to field specification
   * @param string $sWorksheetTitle Title for the worksheet
   */
  public function __construct($sEncoding = 'UTF-8', $bConvertTypes = false, $sWorksheetTitle = 'Table1') {
    $this->bConvertTypes = $bConvertTypes;
    $this
      ->setEncoding($sEncoding);
    $this
      ->setWorksheetTitle($sWorksheetTitle);
  }

  /**
   * Set encoding
   * @param string Encoding type to set
   */
  public function setEncoding($sEncoding) {
    $this->sEncoding = $sEncoding;
  }

  /**
   * Set worksheet title
   *
   * Strips out not allowed characters and trims the
   * title to a maximum length of 31.
   *
   * @param string $title Title for worksheet
   */
  public function setWorksheetTitle($title) {
    $title = preg_replace("/[\\\\|:|\\/|\\?|\\*|\\[|\\]]/", "", $title);
    $title = substr($title, 0, 31);
    $this->sWorksheetTitle = $title;
  }

  /**
   * Add row
   *
   * Adds a single row to the document. If set to true, self::bConvertTypes
   * checks the type of variable and returns the specific field settings
   * for the cell.
   *
   * @param array $array One-dimensional array with row content
   */
  private function addRow($array) {
    $cells = "";
    foreach ($array as $k => $v) {
      $type = 'String';
      if ($this->bConvertTypes === true && is_numeric($v)) {
        $type = 'Number';
      }
      $cells .= "<Cell><Data ss:Type=\"{$type}\">" . $v . "</Data></Cell>\n";
    }
    $this->lines[] = "<Row>\n" . $cells . "</Row>\n";
  }

  /**
   * Add an array to the document
   * @param array 2-dimensional array
   */
  public function addArray($array) {
    foreach ($array as $k => $v) {
      $this
        ->addRow($v);
    }
  }

  /**
   * Generate the excel file
   * @param string $filename Name of excel file to generate (...xls)
   */
  public function generateXML($filename = 'excel-export') {

    // correct/validate filename
    $filename = preg_replace('/[^aA-zZ0-9\\_\\-]/', '', $filename);

    // deliver header (as recommended in php manual)
    header("Content-Type: application/vnd.ms-excel; charset=" . $this->sEncoding);
    header("Content-Disposition: inline; filename=\"" . $filename . ".xls\"");

    // print out document to the browser
    // need to use stripslashes for the damn ">"
    echo stripslashes(sprintf($this->header, $this->sEncoding));
    echo "\n<Worksheet ss:Name=\"" . $this->sWorksheetTitle . "\">\n<Table>\n";
    foreach ($this->lines as $line) {
      echo $line;
    }
    echo "</Table>\n</Worksheet>\n";
    echo $this->footer;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
Excel_XML::$bConvertTypes	private	property	Convert variable types
Excel_XML::$footer	private	property	Footer (of document)
Excel_XML::$header	private	property	* Header (of document) *
Excel_XML::$lines	private	property	Lines to output in the excel document
Excel_XML::$sEncoding	private	property	Used encoding
Excel_XML::$sWorksheetTitle	private	property	Worksheet title
Excel_XML::addArray	public	function	Add an array to the document
Excel_XML::addRow	private	function	Add row
Excel_XML::generateXML	public	function	Generate the excel file
Excel_XML::setEncoding	public	function	Set encoding
Excel_XML::setWorksheetTitle	public	function	Set worksheet title
Excel_XML::__construct	public	function	Constructor