Wat doet deze functie?

<?php
function addSportaKalender($reeks, $officialName, $clubName){
	$url = "http://lap.sporta.be/schrijftoegang/kalender_voan.php?s=47";

	// build data for request
//	$data_array = array('afdeling' => $reeks);
        $data_array = array('afdeling' => $reeks, 'speeldag' => '0', 'club' => '0', 'ploeg' => '0');
//        $data_array = array('afdeling' => '0', 'speeldag' => '0', 'club' => '0', 'ploeg' => '10455');
	$data = http_build_query($data_array);

	// load html
	$html = str_get_html(do_post_request($url, $data));
	$tables = $html -> find('table');

	// get specific game table
	$tableToUse = null;
	foreach ($tables as $table) {
		//echo $table;
		$rows = $table -> find('tr');
        	if(count($rows) > 4){
//		if(count($rows) > 6){
			$tableToUse = $table;
			break;
		}
	}
	//echo '$tableToUse = '.$tableToUse;
	if ($tableToUse) {
		$rows = $tableToUse -> find("tr");
		echo getTableHeaderKalender();
         	for($i = 5; $i < count($rows); $i++){
//		for($i = 20; $i < count($rows); $i++){
			//echo 'rij '.$i.'<br>';
       		       $cells = $rows[$i] -> find('td');
//			$cells = $rows[$i] -> find('td') or $cells = $rows[$i] -> find('th');
			//if ($cells) {echo 'ok gevonden : '.$cells[2]->innertext;}
			if ($cells and $cells[2]->innertext>'') {
				if ($cells[5]->innertext==$officialName or $cells[6]->innertext==$officialName) {
					if ($cells[5]->innertext==$officialName and $clubName>'') 		{$cells[5]->innertext=$clubName; }
					else if ($cells[6]->innertext==$officialName and $clubName>'') 	{$cells[6]->innertext=$clubName; }
					echo getTableRowKalender(false, $cells[0]->innertext, $cells[1]->innertext, $cells[2]->innertext, $cells[3]->innertext, $cells[4]->innertext, $cells[5]->innertext, $cells[6]->innertext, $cells[7]->innertext, $cells[8]->innertext, $cells[9]->innertext, $cells[10]->innertext);
				}
			} else {
			$cells = $rows[$i] -> find('th');
				$cells = $rows[$i] -> find('/tr');
			}
		}
		echo getTableFooter();
	}
}
?>