Гео для ежедневного использования redis

Detailed command 
- As the name implies, this is an add command
1. Adding data to an ordered set of geo types  
2. Multiple parameters can be passed and added at the same time
3. Longitudinal and Latitude Limitations
    Effective longitude ranges from - 180 degrees to 180 degrees
    Effective latitudes range from - 85.05112878 degrees to 85.05112878 degrees.
2. Returns the space element successfully added to the key that contains no existing but updated elements  

Be careful:
1. The longitude must be in accordance with the x, y format after the disaster in the first latitude.

- First open the client

Correct addition
# geoadd myplace 116.580799 39.929301 me 116.580691 39.929007 you 116.58101 39.928931 other  

Wrong demonstration
# geoadd test 181 181 one

// Instantiate redis objects
$redis = new \Redis();

// Link redis native host address default port number
$redis->connect('127.0.0.1', 6379);

// Insert the correct data
$successRes = $redis->geoAdd(
    'myplace', // key value
    116.580799, 39.929301,'me', // latitude and longitude of the first element and its corresponding name
    116.580691,39.929007, 'you',
    116.58101, 39.928931, 'other'
);

// Insert error data
$faildRes = $redis->geoAdd(
    'test',
    181, 181, 'one'
);

var_dump($successRes);
var_dump($faildRes);

- Baidu Translator said POS may be the abbreviation of location
1. Returns the location of a given element in a key
2. Parameters can be passed multiple times 
3. Each item of the return parameter consists of two elements, the first element being longitude and the second element being latitude.
4. Return nil if no given element exists

Proper use
# geopos myplace me you other  

Misuse to get a nonexistent element
# geopos myplace one

// Instantiate redis objects
$redis = new \Redis();

// Link redis native host address default port number
$redis->connect('127.0.0.1', 6379);

// Get the right data
$successRes = $redis->geoPos(
    'myplace', // key value
    'me'// element name
);

// Getting Error Data
$faildRes = $redis->geoPos(
    'myplace', // key value
    'one'// nonexistent element
);

var_dump($successRes);
var_dump($faildRes);

Detailed command
- Get the distance between two elements dist distance
1. Fixed parameters can only calculate the distance between two elements.
2. The last parameter unit represents the unit of meters (m) by default, with the following parameters
    M denotes in meters.
    Km denotes kilometers.
    Mi means miles.
    FT is expressed in feet
    
Return value: The calculated distance is returned as a double-precision floating-point number. If a given location element (any one) does not exist, the command returns a null value.

Note: This command assumes that the Earth is a perfect sphere when calculating distance. In the extreme case, this assumption will result in a maximum error of 0.5%.

Get the distance between two elements in meters
# geodist myplace me you m

Misuse to get a non-existent element
# geodist myplace me not m

// Instantiate redis objects
$redis = new \Redis();

// Link redis native host address default port number
$redis->connect('127.0.0.1', 6379);

// Get the right data
$successRes = $redis->geoDist(
    'myplace', // key value
    'me', // element
    'you', // element
    'm'//Distance Unit
);

// Getting the wrong data
$faildRes = $redis->geoDist(
    'myplace', // key value
    'me', // element
    'not'// elements that do not exist
);

var_dump($successRes);
var_dump($faildRes);

Order details:
- Gets the radius radius of the element information of a radius in the specified latitude and longitude
1. Longitude and longitude must be specified at the front and the rear latitudes.
2. The scope units may be designated as follows
    M denotes in meters  
    Km denotes kilometers 
    Mi means miles
    FT is expressed in feet
3. Getting the distance from a given latitude and longitude requires the same WITHDIST unit as the given distance unit.
4. Getting the latitude and longitude of the returned element requires the parameter WITHCOORD
5. Distance can be used to sort ASC from near to far DESC from far to near
6. Number of returns
 
Return value: Returns an array

Get the display distance of all elements in an element from a given coordinate at a specified distance. Display coordinates according to three items from near to far.
# georadius myplace 116.578486 39.927244 200 km WITHCOORD WITHDIST ASC COUNT 3

// Instantiate redis objects
$redis = new \Redis();

// Link redis native host address default port number
$redis->connect('127.0.0.1', 6379);

$options []='WITHDIST'; // Distance
$options []='WITHCOORD'; //longitude and latitude
$options []='ASC'; //Sort ASC | DESC
$options ['COUNT'] = 3; // number of entries

// Get the right data
$successRes = $redis->geoRadius(
    'myplace', // key value
    '116.578486', //longitude
    '39.927244', //latitude
    '200', //Distance
    'km', // Distance Unit
    $options // other optional parameters
);

var_dump($successRes);

Detailed command
- Gets another version of the GEORADIUS command that corresponds to an element within a specified distance based on one of the key values
1. You need to specify elements instead of latitude and longitude.

Note: The element must be an element that already exists in the key value and the return value of the element will also contain the selected element.

Return value: array

Get the selected element me within the specified range of an element 200 units m, return distance longitude and latitude from near to far 3
# georadiusbymember myplace me 200 m WITHCOORD WITHDIST ASC COUNT 3

// Instantiate redis objects
$redis = new \Redis();

// Link redis native host address default port number
$redis->connect('127.0.0.1', 6379);

$options []='WITHDIST'; // Distance
$options []='WITHCOORD'; //longitude and latitude
$options []='ASC'; //Sort ASC | DESC
$options ['COUNT'] = 3; // number of entries

// Get the right data
$successRes = $redis->geoRadiusByMember(
    'myplace', // key value
    'me', // element
    '200', //Distance
    'km', // Distance Unit
    $options // other optional parameters
);

var_dump($successRes);

Detailed command
- Get the hash value of Geo
1. Hash values of multiple elements can be obtained simultaneously

Note: The returned data needs to correspond to itself

Return value: Each item of an array is a geohash

Get geohash
# geohash myplace me you other

// Instantiate redis objects
$redis = new \Redis();

// Link redis native host address default port number
$redis->connect('127.0.0.1', 6379);

// Get the right data
$successRes = $redis->geoHash(
    'myplace', // key value
    'me', // element
    'you', // element
    'other' // element
);

var_dump($successRes);