WP Panda

function custom_posts_per_page( $query ) {

	if ( is_admin() || ! $query->is_main_query() ) {
		return;
	}

	if ( $query->is_search() ) {
		$query->set( 'posts_per_page', 12 );
	}
	if ( $query->is_category() ) {
		if ( wp_is_mobile() ) {
			$query->set( 'posts_per_page', 5 );
		} else {
			$query->set( 'posts_per_page', 10 );
		}

	}//endif

}//function

add_action( 'pre_get_posts', 'custom_posts_per_page' );

add_filter( 'woocommerce_cart_calculate_fees', 'add_my_fee', 10, 1 );

function add_my_fee( $cart ) {
     $cart->add_fee( 'Моя мега скидка 100 рублей', -100 );
}

foreach( $_post_data as $one_post) {
$post_id = wp_insert_post( $one_post );
}

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