What does this function do?

Hi Guys,

What does this function do?

function filterData($data){
	if(is_array($data))
		$data = array_map("filterData", $data);
	else		
		$data = htmlentities($data, ENT_QUOTES, 'UTF-8');
	
	return $data;
}

PHP:

 

It's a simple recursive function to go through an array and convert applicable characters to html entities.

If you run the code below it'll give you a better understanding of what's going on, I changed htmlentities() to strtoupper() to give you a better idea.

<?php
function filterData($data){
    if(is_array($data))
        $data = array_map("filterData", $data);
    else        
        $data = strtoupper($data);
    
    return $data;
}


$array = array(
	'foo' => array(
		'baz' => 'word',
		'boo' => array(
			'bar' => 'hmm, hey!',
			'boo' => 'whats up?',
		),
	),
	'bing' => 'this is lowercase.. but will appear uppercase',
);


echo '<pre>';
print_r(filterData($array));
?>

PHP:

 

Thanks Ryan! I assumed the same thing, but was not sure about the recursion.