Sanitizes HMTL from Woocommerce Product Descriptions upon post Update

sanitize-woo-descriptions.php

// Sanitizes HMTL from Woocommerce Product Descriptions upon post Update

function sanitize_product_description( $post_id ) {
    // check if post is a product
    if ( 'product' === get_post_type( $post_id ) ) {
        // get the post object
        $product = wc_get_product( $post_id );

        // sanitize the descriptions
        foreach ( ['description', 'short_description'] as $desc_type ) {
            // get the description
            $description = $desc_type === 'description' ? $product->get_description() : $product->get_short_description();

            // remove content between <h1> tags including the h1 tags themselves
            $description = preg_replace('/<h1[^>]*>.*?<\/h1>/si', '', $description);

            // sanitize the description
            $sanitized_description = wp_strip_all_tags( stripslashes($description), true );

            // update the product description
            $desc_type === 'description' ? $product->set_description($sanitized_description) : $product->set_short_description($sanitized_description);
        }

        // save the product (disable save action to prevent infinite loop)
        remove_action( 'save_post', 'sanitize_product_description' );
        $product->save();
        add_action( 'save_post', 'sanitize_product_description' );
    }
}
add_action( 'save_post', 'sanitize_product_description' );