xiaoding-backend-php/app/Http/Services/Frontend/Client/Common/DistanceService.php

<?php
/**
 * @Name
 * @Description
 * @Author 刘学玺
 * @Date 2024/4/1 18:38
 */

namespace App\Http\Services\Frontend\Common;

class DistanceService
{
    /**
     * 根据起点坐标和终点坐标测距离
     * @param array $from [起点坐标(经纬度),例如:array(118.012951,36.810024)]
     * @param array $to [终点坐标(经纬度)]
     * @param bool $km 是否以公里为单位 false:米 true:公里(千米)
     * @param int $decimal 精度 保留小数位数
     * @return float 距离数值
     */
    function get_distance(array $from, array $to, bool $km = true, int $decimal = 2): float
    {
        sort($from);
        sort($to);
        $EARTH_RADIUS = 6370.996; // 地球半径系数

        $distance = $EARTH_RADIUS * 2 * asin(sqrt(pow(sin(($from[0] * pi() / 180 - $to[0] * pi() / 180) / 2), 2) + cos($from[0] * pi() / 180) * cos($to[0] * pi() / 180) * pow(sin(($from[1] * pi() / 180 - $to[1] * pi() / 180) / 2), 2))) * 1000;

        if ($km) {
            $distance = $distance / 1000;
        }

        return round($distance, $decimal);
    }
}