在 Wordpress 中按距离重新排序 post 结果

Question

已更新 最终代码在这里。我认为它完美无缺。

<?php 
                     $my_query = new WP_Query($args_places_cafe);
                     $locations = array();
      if ($my_query->have_posts()) { ?>                
       <div class="yelp_bussines_wrapper"><div class="yelp_icon"><i class="icon-paw"></i></div> 
       <h4 class="yelp_category">Cafe</h4>       
      <?php while ($my_query->have_posts()):$my_query->the_post();
       
       $locationp = get_field('place_address');           
       $lat1 = $locationp['lat'];
       $lon1 = $locationp['lng']; 
       $lat2 = $gmap_lat;
       $lon2 = $gmap_long;
       $dist = distance($lat1, $lon1, $lat2, $lon2, "K");
       $title = get_the_title();
       $locations[] = array(
        'title'    => $title,
        'dist'     => round($dist, 1)
       );
      endwhile; 
      
      usort( $locations, 'sort_locations' );

      foreach( array_slice($locations, 0, 3) AS $location ) {
       print '<div class="yelp_unit"><h5 class="yelp_unit_name">'.$location['title'].'</h5>';
                            print '<span class="yelp_unit_distance"> ('.$location['dist'].' km)</span></div>';
          }
      }
      
      function sort_locations( $a, $b ) {
      if ( $a['dist'] == $b['dist'] ) {
      return 0;
          }

       return ($a['dist'] < $b['dist'] ) ? -1 : 1;
      }
      wp_reset_query(); 
                     ?>

我正在尝试按两种 post 类型之间的距离（坐标）对 post 进行排序。例如，如果您看到 'Property' post，它显示相关的 'Place' post（在同一城市）。问题是我不知道 如何按距离 post 结果重新排序 。

这是对当前代码的一些解释。

两种类型的 post 都具有地理数据 (latitude/longitude)。
$lat1 和 $lon1：ACF 字段到位（博客 post）
$lat2 和 $lon2：属性中的自定义字段（自定义 post 类型）

当前代码：

// Args for Places
$args_places = array(
    'post_type'    => 'post',
    'category__in' => 168,
    'showposts'    => '3', 
    'orderby'      => 'rand',
    'tax_query'    => array(
        array(
            'taxonomy' => 'places-cities',
            'terms'    => $terms_city,
            'field'    => 'name'
        )
    )
);

/**
 * Get distance between 'Properties' and 'Places'
 */
function distance($lat1, $lon1, $lat2, $lon2, $unit)
{
    $theta = $lon1 - $lon2;
    $dist  = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) +  cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta));
    $dist  = acos($dist);
    $dist  = rad2deg($dist);
    $miles = $dist * 60 * 1.1515;
    $unit  = strtoupper($unit);

    if ($unit == "K") {
        return ($miles * 1.609344);
    } elseif ($unit == "N") {
        return ($miles * 0.8684);
    } else {
        return $miles;
    }
}     

// Get Places
$my_query = new WP_Query($args_places);
if ($my_query->have_posts()) {                 
    while ($my_query->have_posts()) {
        $my_query->the_post();
        $location = get_field('place_address');           
        $lat1     = $location['lat'];
        $lon1     = $location['lng']; 
        $lat2     = $gmap_lat;
        $lon2     = $gmap_long;
        $dist     = distance($lat1, $lon1, $lat2, $lon2, "K");  
        get_the_title();
        echo round($dist, 1).' km';
    }               
}
wp_reset_query();

Answer 1

您将无法直接通过查询执行此操作。您将需要加载位置、计算距离、将位置分配给数组，然后使用 usort.

对数组进行排序

这是您的代码，其中应用了原则。请注意，由于您没有为我们提供足够的信息来构建/测试它，这只是关键概念 - 您可能需要根据您的数据进行调整以使其正常工作，等等.

// Load places into a custom WP query
$my_query = new WP_Query( $args_places );
// create an array to store the locations in....
$locations = array();
// loop over the query results
if ( $my_query->have_posts() ) {                 
    while ($my_query->have_posts()):
        $my_query->the_post();                  
        $location = get_field('place_address');           
        $lat1 = $location['lat'];
        $lon1 = $location['lng']; 
        $lat2 = $gmap_lat;
        $lon2 = $gmap_long;
        $dist = distance($lat1, $lon1, $lat2, $lon2, "K");  
        $title = get_the_title();
        // load the values into the array so it's available for sorting
        $locations[] = array(
            'title'    => $title,
            'location' => $location
            'dist'     => $dist
        );
    endwhile;

    // sort the array by distance
    usort( $locations, 'sort_locations' );

    // NOW you can output the locations, as they are sorted by distance
    foreach( $locations AS $location ) {
         echo $location['title'];
         echo $location['dist'] . 'km';
         // ...etc
    }
}

// callable for usort.  Sorts the array based on the 'dist' array value
function sort_locations( $a, $b ) {
    if ( $a['dist'] == $b['dist'] ) {
        return 0;
    }

    return ($a['dist'] < $b['dist'] ) ? -1 : 1;
}

在 Wordpress 中按距离重新排序 post 结果

Re-order post results by distance in Wordpress

php

wordpress

distance