array_map() takes two arguments. The first argument is the function to perform on the second argument (which is an array). Returns a new array.
$original = array('<p>Paragraph</p>', '<strong>Bold</strong>');
$new = array_map('strip_tags', $original);
// $new is now array('Paragraph', 'Bold');
Nice one. Didn’t know about this function yet. Normally I would do a foreach loop.