List categories by shortcode?

  • Hi, I want to display inline categories of current pos by shortcodes and divided by comma.
    I tried it like this below.

    function genre( $atts, $content = null ) {
$categories = the_category(', ');
	return '<div id="genre"><b>Genre: </b>' . $categories . '</div>';
}

add_shortcode("genre", "genre");

    This returns Genre:

    function genre( $atts, $content = null ) {
$categories = get_the_category(', ');
	return '<div id="genre"><b>Genre: </b>' . $categories . '</div>';
}

add_shortcode("genre", "genre");

    This returns Genre: Array

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