插件查询代码中出现未定义的IS_USER_LOGGED_IN()错误

我得到一个：

 Fatal error: Call to undefined function is_user_logged_in() in C:\\wamp\\www\\benracicot\\wp-includes\\query.php on line 2521

如果我从WP\\u查询中删除$args，则不会出现任何错误，并且可以打印返回对象（所有空值），那么我的插件查询代码有什么错？

function getPostIDsByMonth($month){
    $args = array( \'monthnum\' => 1, \'post_type\' => \'post\' );
    $ids = new WP_Query($args);
    return $ids;
}

$months = 1;
$bymonth = getPostIDsByMonth($months);
print_r($bymonth);
echo $bymonth->post_count;
if (! empty($bymonth)){

     while($bymonth->have_posts()): $bymonth->the_post(); 
        ?><h3><a href="#"><?php the_title(); ?></a></h3><?php 
        the_content();
     endwhile;

}

require_once( wp_normalize_path(ABSPATH).\'wp-load.php\'); class Your_Plugin_Class { private $is_user_logged_in; add_action(\'init\', function(){ $this-> is_user_logged_in = is_user_logged_in(); echo \'is_user_logged_in\'.$this->is_user_logged_in; }); add_filter(\'woocommerce_billing_fields-2\',array( $this, \'add_billing_field\' )); } public function add_billing_field( $fields = array() ) { if ( $this->is_user_logged_in ){ echo \'add_billing_field\'.$this->is_user_logged_in; return $fields; }else{ echo \'add_billing_field\'.$this->is_user_logged_in; } } }

相关推荐