[Wordpress] - Get rid of HTML in comments | Dont get Spammed!

function plc_comment_post( $incoming_comment ) {

	$incoming_comment['comment_content'] = htmlspecialchars($incoming_comment['comment_content']);

	$incoming_comment['comment_content'] = str_replace( "'", ''', $incoming_comment['comment_content'] );

	return( $incoming_comment );
}

function plc_comment_display( $comment_to_display ) {

	$comment_to_display = str_replace( ''', "'", $comment_to_display );

	return $comment_to_display;
}

add_filter( 'preprocess_comment', 'plc_comment_post', '', 1);
add_filter( 'comment_text', 'plc_comment_display', '', 1);
add_filter( 'comment_text_rss', 'plc_comment_display', '', 1);
add_filter( 'comment_excerpt', 'plc_comment_display', '', 1);