Php wordpress通过元数据和元数据获取产品

我试图通过元值和元键来显示产品。我使用下面的代码来验证meta_键和meta_值。现在，如果没有值为“yes\u feat”的meta\u键，则不会打印产品。太棒了

问题是，如果只有一个产品的meta_键的值为“yes_feat”，那么所有其他产品也会打印出来。我如何使其仅显示具有meta_值“yes_feat”的产品

---

非常感谢

在WP\u查询参数中添加元查询

<?php
$params = array(
    'post_type' => 'product',
    'meta_query' => array(
        array('key' => '_featured', //meta key name here
              'value' => 'yes_feat', 
              'compare' => '=',
        )
    ),  
    'posts_per_page' => 5 

);
$wc_query = new WP_Query($params);
global $post, $product;

if( $wc_query->have_posts() ) {

  while( $wc_query->have_posts() ) {

    $wc_query->the_post();

        $wc_query->post_name;
        echo "print products that have meta_value = yes_feat";
        $yes_feat = get_post_meta($wc_query->ID, '_featured',true );
  } // end while

} // end if
 else 
{
    echo "nothing found";
}

wp_reset_postdata();
?>

---

您的代码似乎正常。如果没有额外的因素，它不可能给出所有的产品。使用此代码，在have_posts循环中打印您的最终查询，并将结果粘贴到此处$i=0；if（$wc_query->have_posts（））{$i++；if（$i==1）var_dump（$wc_query->query）；}

<?php
$params = array(
    'post_type' => 'product',
    'meta_query' => array(
        array('key' => '_featured', //meta key name here
              'value' => 'yes_feat', 
              'compare' => '=',
        )
    ),  
    'posts_per_page' => 5 

);
$wc_query = new WP_Query($params);
global $post, $product;

if( $wc_query->have_posts() ) {

  while( $wc_query->have_posts() ) {

    $wc_query->the_post();

        $wc_query->post_name;
        echo "print products that have meta_value = yes_feat";
        $yes_feat = get_post_meta($wc_query->ID, '_featured',true );
  } // end while

} // end if
 else 
{
    echo "nothing found";
}

wp_reset_postdata();
?>