Php:redis uses geospatial

  Go straight to the code ：

//geoAdd: Will give the space element （ longitude 、 latitude 、 name ） Add to the specified key .  The data will be stored in keys in an ordered set ,  To make it look like  GEORADIUS  and  GEORADIUSBYMEMBER  Such a command can later retrieve these elements through a location query 
//geoAdd($key, $longitude( longitude ), $latitude( latitude ), $name [, $longitude, $latitude, $member, ...]);
        $redis->del("myplaces");
        //key Whether the value exists 
        $redis->exists("myplaces");
        // The effective longitude is -180 C to 180 degree 
        // The effective latitude is -85.05112878 C to 85.05112878 degree  ( All data will fail to be added as long as invalid longitude and latitude occur )
        $result = $redis->geoAdd('myplaces', '-157.478799', '21.235456', 'Honolulu', '116.404269', '39.91582', 'beijing', '121.47879', '31.235456', 'shanghai');
        dump($result);
//geoHash(key,name1,name2,namen)   Returns the... Of one or more positional elements Geohash character string       Returns one or more elements Geohash Array of strings 
        $hashes = $redis->geoHash("myplaces", "San Francisco", "Honolulu","beijing","shanghai");//['87z9pyek3y0','8e8y6d5jps0']
        dump($hashes);
//geoPos(key,name1,name2,namen)： Return all the positions of the positioning elements from the key （ Longitude and latitude ）  Command returns an array ,  Each item in the array consists of two elements ( longitude , latitude ) form 
        $positions = $redis->geoPos("myplaces", "San Francisco", "Honolulu");//[[37.773, -122.431],[-157.858, 21.315]]
        dump($positions);
//GeoDist(key,name1,name2 [, $unit='m']): Returns the distance between two given positions  unit contain m、km、mi( miles )、ft( feet )
        $kilometers  = $redis->geoPos("myplaces", "San Francisco", "Honolulu",'km');//168.2752
        dump($kilometers);
//geoRadius($key, $longitudee( longitude ), $latitude( latitude ), $radius( radius ), $unit [, Array $options]): Centered on a given latitude and longitude ,  Return key contains position elements ,  The distance from the center shall not exceed the given maximum radius radius All position elements of the distance 
        dump($redis->geoRadius("myplaces", 123.858, 42.306, 10000, 'km'));

        // Express 10000km Extraction of ranges 2 individual 
        $options['count'] = 2;
        //ASC|DESC
        $options[] = 'ASC';
        //WITHCOORD： It also returns the longitude of the matching item , Latitude coordinates .
        $options[] = 'WITHCOORD';
        //WITHDIST： Also return to the designated center to return the distance of the item . The distance is returned in the same units as the radius parameter specified for the command .
        $options[] = 'WITHDIST';
        dump($redis->geoRadius("myplaces", 123.858, 42.306, 10000, 'km', $options));
//geoRadiusByMember($key, $name, $radius, $units [, Array $options]): Function and     geoRadius It's just that the origin is name Decide not like geoRadius Enter longitude and latitude to determine 
        dump($redis->geoRadiusByMember("myplaces", "shanghai", 3000, 'km'));

Execution results ： 

int(3)

array(4) {
  [0] => bool(false)
  [1] => string(11) "8eb0b3z3w00"
  [2] => string(11) "wx4g0f7n800"
  [3] => string(11) "wtw3sq4psz0"
}

array(2) {
  [0] => array(0) {
  }
  [1] => array(2) {
    [0] => string(22) "-157.47879713773727417"
    [1] => string(20) "21.23545663354175161"
  }
}

array(3) {
  [0] => array(0) {
  }
  [1] => array(2) {
    [0] => string(22) "-157.47879713773727417"
    [1] => string(20) "21.23545663354175161"
  }
  [2] => array(0) {
  }
}

array(3) {
  [0] => string(8) "shanghai"
  [1] => string(7) "beijing"
  [2] => string(8) "Honolulu"
}

array(2) {
  [0] => array(3) {
    [0] => string(7) "beijing"
    [1] => string(8) "678.5471"
    [2] => array(2) {
      [0] => string(21) "116.40426903963088989"
      [1] => string(20) "39.91581928642635546"
    }
  }
  [1] => array(3) {
    [0] => string(8) "shanghai"
    [1] => string(9) "1249.2980"
    [2] => array(2) {
      [0] => string(21) "121.47878855466842651"
      [1] => string(20) "31.23545629441388627"
    }
  }
}

array(2) {
  [0] => string(8) "shanghai"
  [1] => string(7) "beijing"
}

array(1) {
  [0] => array(0) {
  }
}