get-last-month-products.php

<?php

/**
 * Get All Products from Last Month
 */
add_shortcode('wc_get_products_last_month', function( $atts, $content = null ){

    $start_date = array(
        'year'  => date("Y", strtotime("first day of previous month")),
        'month' => date("n", strtotime("first day of previous month")),
        'day'   => date("j", strtotime("first day of previous month"))
    );

    $end_date = array(
        'year'  => date("Y", strtotime("last day of previous month")),
        'month' => date("n", strtotime("last day of previous month")),
        'day'   => date("j", strtotime("last day of previous month"))
    );


    $args = array(
        'post_type' => 'product',
        'date_query' => array(
            array(
                'after'     => $start_date,
                'before'    => $end_date,
                'inclusive' => true,
            ),
        ),
        'posts_per_page' => -1,
    );

    $query = new WP_Query( $args );

    if ( $query->have_posts() ) {

        while( $query->have_posts() ) { $query->the_post();
            // Get $product object from product ID
            $product = wc_get_product( get_the_ID() );

            // Do you stuff here
            //_e( $product->get_name() );

        }

    } else {
        echo 'No Posts';
    }

    wp_reset_query();
});