这是一个不错的示例，直接贴代码，首先要知道纬度值、经度值
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/** * @desc 根据两点间的经纬度计算距离 * @param float $lat 纬度值 * @param float $lng 经度值 */function getDistance($lat1, $lng1, $lat2, $lng2) { $earthRadius = 6367000; //approximate radius of earth in meters /* Convert these degrees to radians to work with the formula */$lat1 = ($lat1 * pi() ) / 180; $lng1 = ($lng1 * pi() ) / 180; $lat2 = ($lat2 * pi() ) / 180; $lng2 = ($lng2 * pi() ) / 180; /* Using the Haversine formula http://en.wikipedia.org/wiki/Haversine_formula calculate the distance */$calcLongitude = $lng2 - $lng1; $calcLatitude = $lat2 - $lat1; $stepOne = pow(sin($calcLatitude / 2), 2) + cos($lat1) * cos($lat2) * pow(sin($calcLongitude / 2), 2); $stepTwo = 2 * asin(min(1, sqrt($stepOne))); $calculatedDistance = $earthRadius * $stepTwo; return round($calculatedDistance); } |
