php wrap every N elements

Wrap every 3 elements with div.row:

$index = 1;



foreach( $sub_pages as $sub_page ) {

	

	if ($index % 3 == 1 || $index == 1) { // beginning of the row or first

		echo '<div class="row">';

	}

	

	echo '<div class="col-sm-4">';



	echo $sub_page->post_title;

	echo $sub_page->post_excerpt;

	

	echo '</div><!-- .col -->';

	

	if ($index % 3 == 0 || $index == count($sub_pages)) { // end of the row or last

		echo '</div><!-- .row -->';

	}

	

	$index++;

}

Wrap every 5 elements using array_chunk():

$chunks = array_chunk($original, 5);

foreach ($chunks as $each_chunk) {

        // echo out as unordered list

}