/**
* Generates a bar chart from the entered data and returns the HTML code to render the graph
*
* @param $input String Input between the <pBar> and </pBar> tags or null is the tag is closed (<pBar />)
* @param $args Array Tag arguments, which are entered like HTML tag attributes; this is an associative
* array indexed by attribute name
* @param $parser Object The parent parser; more advanced extensions use this to obtain the contextual Title,
* parse wiki text, expand braces, register link relationships and dependencies etc.
* @returns String HTML code to show the bar chart
*/
public static function render($input, $args, $parser)
{
// Recursively parse the wikitext
$parsedText = $parser->recursiveTagParse($input);
// Create the chart
$chart = new pChart4mwBars();
return $chart->renderChart($parsedText, $args);
}