Robbertvermeulen

<?php
/**
 * Filter to prevent "Undefined array key 'width'" warning in wp_calculate_image_srcset
 *
 * @param array       $sources    The image sources.
 * @param array       $size_array The size array.
 * @param string      $image_src  The image source URL.
 * @param array       $image_meta The image meta data.
 * @param int         $attachment_id The attachment ID.
 * @return array Modified image sources.

Robbertvermeulen

add_action('rest_api_init', 'register_custom_order_billing_shipping_fields');

function register_custom_order_billing_shipping_fields() {
    // Extend billing fields
    register_rest_field('shop_order', 'billing', array(
        'get_callback' => 'get_order_billing_fields',
        'update_callback' => null,
        'schema' => null,
    ));

Robbertvermeulen

<?php
/**
 * Check if a user has a specific role
 */
function user_has_role( string $role, $user_id = null ) {

   if ( is_numeric( $user_id ) ) {
      $user = get_user_by( 'id', $user_id );
   } else {
      $user = wp_get_current_user();

Robbertvermeulen

<?php
/**
 * Get nav menu items by location
 */
function get_nav_menu_items_by_location( string $location, array $args = [] ) {
    $locations = get_nav_menu_locations();
    $object = wp_get_nav_menu_object( $locations[$location] );
    $menu_items = wp_get_nav_menu_items( $object->name, $args );
    return $menu_items;
}

Robbertvermeulen

<?php
/**
 * Get page by template file name
 */
function get_page_id_by_template( $template ) {
    $args = [
        'post_type'  => 'page',
        'fields'     => 'ids',
        'nopaging'   => true,
        'meta_key'   => '_wp_page_template',

Robbertvermeulen

<?php
/**
 * Get the first term of a post by id
 */
function get_first_term_by_id( int $post_id, string $taxonomy, string $output = 'term_id' ) {
 	$terms = get_the_terms( $post_id, $taxonomy );
 	if ( ! empty( $terms ) ){
		$term = array_shift( $terms );
  	}
	return $term->$output;

Robbertvermeulen

/**
 * Registers the improved pages widget
 */
function add_improved_pages_widget() {
   register_widget( 'Improved_Pages_Widget' );
}
add_action( 'widget_init', 'add_improved_pages_widget' );