22 lines
650 B
PHP
22 lines
650 B
PHP
<?php
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namespace App\Helpers;
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class Location
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{
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public static function juli($user_lat = 0, $user_lng = 0, $lat = 0, $lng = 0)
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{
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if ($user_lat == 0 || $user_lng == 0 || $lat == 0 || $lng == 0) {
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return ''; //用户定位失败
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}
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$juli = ROUND(6378.138 * 2 * ASIN(SQRT(POW(SIN(($user_lat * PI() / 180 - $lat * PI() / 180) / 2), 2) + COS($user_lat * PI() / 180) * COS($lat * PI() / 180) * POW(SIN(($user_lng * PI() / 180 - $lng * PI() / 180) / 2), 2))) * 1000);
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if ($juli > 1000) {
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return round($juli / 1000, 1) . 'Km';
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} else {
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return $juli . 'M';
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}
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}
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}
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