bbp_encode_bad( string $content = '' )

function bbp_encode_bad( $content = '' ) {

	// Setup variables
	$content = _wp_specialchars( $content, ENT_NOQUOTES );
	$content = preg_split( '@(`[^`]*`)@m', $content, -1, PREG_SPLIT_NO_EMPTY + PREG_SPLIT_DELIM_CAPTURE );
	$allowed = bbp_kses_allowed_tags();
	$empty   = array(
		'br'    => true,
		'hr'    => true,
		'img'   => true,
		'input' => true,
		'param' => true,
		'area'  => true,
		'col'   => true,
		'embed' => true
	);

	// Loop through allowed tags and compare for empty and normal tags
	foreach ( $allowed as $tag => $args ) {
		$preg = $args ? "{$tag}(?:\s.*?)?" : $tag;

		// Which walker to use based on the tag and arguments
		if ( isset( $empty[$tag] ) ) {
			array_walk( $content, 'bbp_encode_empty_callback',  $preg );
		} else {
			array_walk( $content, 'bbp_encode_normal_callback', $preg );
		}
	}

	// Return the joined content array
	return implode( '', $content );
}