php mysql compare long and lat, return ones under 10 miles

Question

Hay i want to find the distance (in miles) between 2 locations using lat and long values, and check if they are within a 10 mile radius of each other.

When a user lo

Answer 1

Searching in KM: ($LATITUDE -> Your latitude, $LONGITUDE -> Your longitude, latitud_fieldname -> Your latitude database fieldname, longitude_fieldname -> Your longitude database fieldname)

SELECT * FROM (
    SELECT *, 
        (
            (
                (
                    acos(
                        sin(( $LATITUDE * pi() / 180))
                        *
                        sin(( `latitud_fieldname` * pi() / 180)) + cos(( $LATITUDE * pi() /180 ))
                        *
                        cos(( `latitud_fieldname` * pi() / 180)) * cos((( $LONGITUDE - `longitude_fieldname`) * pi()/180)))
                ) * 180/pi()
            ) * 60 * 1.1515 * 1.609344
        )
    as distance FROM `myTable`
) myTable
WHERE distance <= $DISTANCE_KILOMETERS;

Searching in Miles:

SELECT * FROM (
    SELECT *, 
        (
            (
                (
                    acos(
                        sin(( $LATITUDE * pi() / 180))
                        *
                        sin(( `latitud_fieldname` * pi() / 180)) + cos(( $LATITUDE * pi() /180 ))
                        *
                        cos(( `latitud_fieldname` * pi() / 180)) * cos((( $LONGITUDE - `longitude_fieldname`) * pi()/180)))
                ) * 180/pi()
            ) * 60 * 1.1515
        )
    as distance FROM `myTable`
) myTable
WHERE distance <= $DISTANCE_MILES;

For full info, follow the link: https://ourcodeworld.com/articles/read/1019/how-to-find-nearest-locations-from-a-collection-of-coordinates-latitude-and-longitude-with-php-mysql