javascript - 如何将多个 php 值查询到一个 javascript 变量中

Question

我正在使用 php while 语句将纬度和经度坐标查询到 javascript 变量中。截至目前，它被查询为单独的 js 变量，如

  var locations = [
     [ "59.911968", "10.709821" ]
                  ];
  var locations = [
     [ "57.701476", "11.97373" ]
                  ];

但我想把它弄成这样

   var locations = [
     [ "59.911968", "10.709821" ]
     [ "57.701476", "11.97373" ]
                  ];

while 语句:

<?php
   $args = array('post_type' => 'events');
   $my_query = new WP_Query($args);
        while ($my_query->have_posts()) : $my_query->the_post();  
            $lat  = get_field( "gp_latitude" ); 
            $lon  = get_field( "gp_longitude" ); 
?>
<script>
    var locations = [
     [ <?php echo json_encode($lat) ?>, <?php echo json_encode($lon) ?> ]
    ];
</script>

<?php endwhile; ?>

Answer 1

json_encode 支持复数，你可以这样做:

<?php
   $args = array('post_type' => 'events');
   $my_query = new WP_Query($args);
        locations = array();
        while ($my_query->have_posts()) : $my_query->the_post();
            $locations[] = array(
                "lat" => get_field( "gp_latitude" ),
                "lng" => get_field( "gp_longitude" ),
            );
endwhile; ?>
<script>
    var locations = <?php echo json_encode($locations) ?>;
</script>

我可能弄乱了 while 循环语法。这个想法是您收集 $locations 中的所有值，然后将其导出到 JavaScript 一次。