下面的代码位于:/includes/search/functions/ajax.php line:1489
这是基于所选搜索字段的引脚在任何给定页面上填充地图的内容......
有人可以帮我弄清楚如何将此搜索限制在特定半径,以便地图上的每个图钉都不会加载吗?
现在所有的引脚都在地图上加载,消耗了分配的cpu功率,并且当超过1000个引脚立即加载时,最终可能会崩溃浏览器。
/////////////////////////////////////////////////////////////////
//// ACTUALLY DOES THE QUERY
/////////////////////////////////////////////////////////////////
$sQ = new WP_Query($args);
//// STARTS OUR POST ARRAY - EVERY FOUND POST IS INSERTED IN HERE IN ORDER TO ADD THE PINS
$return['posts'] = array();
$return['post_ids'] = array();
/// LOOPS POSTS
if($sQ->have_posts()) { while($sQ->have_posts()) { $sQ->the_post();
///// GETS REQUIRED FIELDS TO INSERT IN THE ARRAY
$latitude = get_spot_latitude(get_the_ID());
$longitude = get_spot_longitude(get_the_ID());
$pin = get_spot_pin(get_the_ID());
$featured = 'false';
$thumb = '';
//// IF FEATURED OVERLAYS ARE SET
if(ddp('map_featured_overlay') == 'on') {
//// IF THIS IS FEATURED
if(get_post_meta(get_the_ID(), 'featured', true) == 'on') { $featured = 'true'; }
$thumb = ddTimthumb(btoa_get_featured_image(get_the_ID()), 150, 150);
}
//// ONLY ADDS TO THE ARRAY IN CASE WE HAVE A LATITUDE AND LONGITUDE
if($latitude != '' && $longitude != '') {
$return['posts'][] = array(
'title' => get_the_title(),
'id' => get_the_ID(),
'latitude' => $latitude,
'longitude' => $longitude,
'pin' => $pin,
'permalink' => get_permalink(),
'featured' => $featured,
'thumb' => $thumb,
);
$return['post_ids'][] = get_the_ID();
} else {
$return['posts'][] = array(
'title' => get_the_title(),
'error' => 'NO LATITUDE OR LONGITUDE'
);
}//// ENDS IF POST HAS LATITUDE AND LONGITUDE
} }
这是搜索字段的一部分:
<input type="hidden" id="_sf_enable_radius_search" value="false" name="_sf_enable_radius_search" />
<input type="hidden" id="_sf_radius_lat_from" value="" name="_sf_radius_lat_from" />
<input type="hidden" id="_sf_radius_lat_to" value="" name="_sf_radius_lat_to" />
<input type="hidden" id="_sf_radius_lng_from" value="" name="_sf_radius_lng_from" />
<input type="hidden" id="_sf_radius_lng_to" value="" name="_sf_radius_lng_to" />
<input type="hidden" id="_sf_radius_center_lat" value="" name="_sf_radius_center_lat" />
<input type="hidden" id="_sf_radius_center_lng" value="" name="_sf_radius_center_lng" />
<input type="hidden" id="_sf_radius_field" value="false" name="_sf_radius_field" />
<input type="hidden" id="_sf_radius_field_id" value="false" name="_sf_radius_field_id" />
<input type="hidden" id="_sf_post_ids" value="" name="_sf_post_ids" />
<input type="hidden" id="_sf_radius_distance" value="" name="_sf_radius_distance" />
<input type="hidden" name="is_taxonomy" value="true" id="_sf_search_is_taxonomy" />
答案 0 :(得分:0)
$loopCount = 0;
$maxLoops = 10;
while($sQ->have_posts()) {
if($loopCount == $maxLoops)
{
break;
}
$loopCount ++;
}
这应该只循环10次
答案 1 :(得分:0)
您需要计算一个纬度/长度位置与另一个纬度/长度位置的距离。计算此距离后,您可以将其与最大半径进行比较。一种算法是Haversine formula。
您将能够在互联网上找到许多这样的实现,这是PHP中的实现。
function getDistance($latFrom, $longFrom, $latTo, $longTo)
{
$dLat = deg2rad($latTo - $latFrom);
$dLon = deg2rad($longTo - $longFrom);
$angle = sin($dLat / 2) * sin($dLat / 2) + cos(deg2rad($latFrom)) * cos(deg2rad($latTo)) * sin($dLon / 2) * sin($dLon / 2);
$c = 2 * asin(sqrt($angle));
$distance = 6371000 * $c;
// Distance is in metres
return $distance;
}
请参阅(上面的代码段和基本相同的代码段):How to check if a certain coordinates fall to another coordinates radius using PHP only
传递你的中心纬度/经度和记录纬度/经度以获得距离(以米为单位)然后进行比较:
if (getDistance(0, 0, 0, 0) < 1000) {
// do stuff
}
1000
是你的半径。