Как в $content вставить?

add_filter( 'default_content', 'custom_editor_content' );
function custom_editor_content( $content ) {
	$content = '
	<div class="content1">
		This is your main page content
	</div>

	<div class="content-2">
		This is your sidebar content
	</div>
	';

	return $content;
}

add_filter( 'default_content', 'custom_editor_content' );
function custom_editor_content( $content ) {
	$content = '
	<div class="content-col-main">
		This is your main page content
	</div>

	<div class="content-col-side">
		This is your sidebar content
	</div>

	<div class="content3">
		<?php the_tags( '', ' - '); ?>
	</div>
	';

	return $content;
}