在functions.php文件中调用它时，Wordpress没有从数据库获取值

Question

我试图循环我的自定义查询并从该查询获得的结果中创建一个新数组但它在运行时返回null

新的WP_Query（$ args）

尝试了很多调试不知道是什么导致这个问题在这里是我到目前为止已经treid

function getProductbySize(){
$category = $_REQUEST['category'];
$size = $_REQUEST['sized'];
$user_id = get_current_user_id();

$args = array(
            'post_type'             => 'product',
            'post_status'           => 'publish',
            'posts_per_page'        => '-1',
            'author'                => $user_id,
            'tax_query'             => array(
                array(
                    'taxonomy'      => 'product_cat',
                    'field'         => 'term_id',
                    'terms'         => $category,
                    'operator'      => 'AND'
                ),
                array(
                    'taxonomy'      => 'Size',
                    'field'         => 'term_id',
                    'terms'         => $size,
                )
            )
        );
        $products = new WP_Query($args);

        // var_dump($products);
        $data_array = [];
        $data = [];
        foreach($products as $product){
            $data_array[] = the_ID();
            $data_array[] = the_content();
            $data_array[] = the_permalink();

            $data[] = $data_array;
        }

        var_dump($data_array);
    }
    add_action('wp_ajax_getProductbySize', 'getProductbySize');
    add_action('wp_ajax_nopriv_getProductbySize', 'getProductbySize');

当我转储我的数据数组时，它会显示如下内容

array（44）{[0] => NULL [1] => NULL [2] => NULL [3] => NULL [4] => NULL [5] => NULL [6] => NULL [7] => NULL [8] => NULL [9] => NULL [10] => NULL [11] => NULL [12] => NULL [13] => NULL [14] => NULL [15] => NULL [16] => NULL [17] => NULL [18] => NULL [19] => NULL [20] => NULL [21] => NULL [22] => NULL [23] => NULL [ 24] => NULL [25] => NULL [26] => NULL [27] => NULL [28] => NULL [29] => NULL [30] => NULL [31] => NULL [32] => NULL [33] => NULL [34] => NULL [35] => NULL [36] => NULL [37] => NULL [38] => NULL [39] => NULL [40] => NULL [41] => NULL [42] => NULL [43] => NULL}

任何人都可以帮我找出我做错的事先谢谢你

Answer 1

    <?php  


function getProductbySize(){
    $category = $_REQUEST['category'];
    $size = $_REQUEST['sized'];
    $user_id = get_current_user_id();

    $data_array = [];   // Get some random products.
        $args = array(
                'post_type'    => 'product',
                'post_status'  => 'publish',
                'author'       =>  $user_id,
                'product_cat'  =>  $category,
                'posts_per_page'  => '-1', 
                'tax_query'             => array( 
                    array(
                        'taxonomy'      => 'Size',
                        'field'         => 'term_id',
                        'terms'         => $size,
                    )
                )


            );
        $loop = new WP_Query( $args );
        if ( $loop->have_posts() ) {
            while ( $loop->have_posts() ) : $loop->the_post();

                array_push($data_array,array(
                        'title' =>get_the_title(),
                        'content' =>get_the_content(),
                        'permalink' =>get_the_permalink()
                    ));

            endwhile;
        } 

        var_dump($data_array);
    }
    add_action('wp_ajax_getProductbySize', 'getProductbySize');
    add_action('wp_ajax_nopriv_getProductbySize', 'getProductbySize');
  ?>