Question

如果使用自定义字段满足三个条件，我正在尝试使用wordpress发布最新帖子。首先，河流必须是“科罗拉多”，区域必须是“区域4”，位置必须是“声音5”。这甚至可以吗？

到目前为止

代码：

<?php $querystr = "
      SELECT wposts.*
      FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta
      WHERE wposts.ID = wpostmeta.post_id
      AND wpostmeta.meta_key = 'select_river'
      AND wpostmeta.meta_value = 'Colorado'
      AND wpostmeta.meta_key = 'select_area'
      AND wpostmeta.meta_value = 'Area 4'
      AND wpostmeta.meta_key = 'select_soundbite_position'
      AND wpostmeta.meta_value = 'soundbite 5'
      AND wposts.post_status = 'publish'
      AND wposts.post_type = 'post'
      ORDER BY wposts.post_date DESC
      ";

     $pageposts = $wpdb->get_results($querystr, OBJECT);

      if ($pageposts):
      foreach ($pageposts as $post):
        setup_postdata($post); ?>

        <p>Test</p>

        <?php endforeach; ?>
    <?php endif; ?>

它不起作用，我不知道为什么......我对PHP的理解缺乏

Answer 1

那是怎么回事：

<?php
$querystr = "
      SELECT wposts.*
      FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta, $wpdb->postmeta wpostmeta2, $wpdb->postmeta wpostmeta3
      WHERE wposts.ID = wpostmeta.post_id
      AND wpostmeta.meta_key = 'select_river'
      AND wpostmeta.meta_value = 'Colorado'
      AND wpostmeta2.meta_key = 'select_area'
      AND wpostmeta2.meta_value = 'Area 4'
      AND wpostmeta3.meta_key = 'select_soundbite_position'
      AND wpostmeta3.meta_value = 'soundbite 5'
      AND wposts.post_status = 'publish'
      AND wposts.post_type = 'post'
      ORDER BY wposts.post_date DESC
      ";
?>

如果自定义字段为true，则显示最新帖子

1 个答案: