How to calculate latitude and longitude based on distance in laravel - laravel

Question

This is my function
public function getRshow(){
$lats = $tenl[0]->latitude;
$longs = $tlog[0]->longitude;
$distance =$par_dis[0]->partner_distance;
$project = "SELECT * , (3956 * 2 * ASIN(SQRT( POWER(SIN(( $lats - latitude) * pi()/180 / 2), 2) +COS( $lats * pi()/180) * COS(latitude * pi()/180) * POWER(SIN(( $longs - longitude) * pi()/180 / 2), 2) ))) as distance
FROM `abserve_renterpost` having distance <= $distance order by distance";
$la=DB::SELECT($project);
$lara=array();
foreach ($project as $key => $v) {
$lara[]=(get_object_vars($v));
}
}
My query is working good if I run only the query, but if I converted my query for value and array format it's not working, error is displayed as below.
(SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ' - latitude) * pi()/180 / 2), 2) +COS( 27.7 * pi()/180) * COS(latitude * ' at line 1 (SQL: SELECT * , (3956 * 2 * ASIN(SQRT( POWER(SIN(( 27.7 - latitude) * pi()/180 / 2), 2) +COS( 27.7 * pi()/180) * COS(latitude * pi()/180) * POWER(SIN(( 74.12399600000003
- longitude) * pi()/180 / 2), 2) ))) as distance
FROM `abserve_renterpost` having distance <= 200 order by distance))

Answer 1

I noticed $lats was 27.7 which is odd.
try this
$lats = $tenl[0]->latitude;
$longs = $tlog[0]->longitude;
$distance =$par_dis[0]->partner_distance;
$project = <<<SQL
SELECT * , (3956 * 2 * ASIN(
SQRT(
POWER(SIN(($lats - `latitude`) * pi() / 180 / 2), 2)
+ COS($lats * pi() / 180)
* COS(`latitude` * pi() / 180)
* POWER(SIN(($longs - `longitude`) * pi() / 180 / 2), 2)
))
) as 'distance'
FROM `abserve_renterpost`
WHERE distance <= $distance
ORDER BY distance;
SQL;
$la=DB::select($project);
$lara=array();
foreach ($project as $key => $v) {
$lara[]=(get_object_vars($v));
}