PHP使用Redis的GEO(地理位置)命令

【虚拟资源买卖网www.cnused.com】源码虚拟资源交易平台,免费开通VIP商户!
吆喝资源网官方客服QQ:787749153官方唯一QQ号码
文字广告位招租      好位置不等人!200元/月

Redis自3.2版本开始新增对GEO(地理位置)的支持,但是地球不是一个完美的球体,在最坏的情况下的偏差可能是0.5%。接近两极的区域是不支持的,支持坐标的有效的经度从-180度到180度;有效的纬度从-85.05112878度到85.05112878度,超出范围将会报错。

我喜欢爬山,学习GEO的时候我也以山的坐标做演示,我的坐标是:

116.517159,39.922267

我整理了一些山的坐标

$mountainCoordinates = array(
    array('115.793844', '40.584459', 'Hai_tuo'),//海陀山坐标
    array('115.056232', '39.948933', 'Small_wutai'),//小五台山坐标
    array('114.173822', '27.474563', 'Wu_gong'),//武功山坐标
    array('111.341648', '25.518178', 'Leek_ridge'),//韭菜岭坐标
    array('103.901761', '31.60487', 'Jiu_ding'),//九顶山坐标
    array('107.398009', '34.057777', 'Ao_Shan'),//鳌山坐标
);

1.向mountainCoordinates的key里增加坐标

try {
    $redis = new Redis();
    $redis->connect('192.168.75.132', 6379);
    foreach ($mountainCoordinates as $coordinates){
        $param = array('geoadd', 'mountainCoordinates');
        $param = array_merge($param, $coordinates);
        $ret = call_user_func_array(array($redis, 'rawCommand'), $param);
        print_r($ret);
    }
} catch (Exception $e){
    echo $e->getMessage();
}

执行结果

int(1)
int(1)
int(1)
int(1)
int(1)
int(1)

2.获取坐标

try {
    $redis = new Redis();
    $redis->connect('192.168.75.132', 6379);
    $param = array('geopos', 'mountainCoordinates', 'Hai_tuo', 'Wu_gong', 'Jiu_ding');
    $ret = call_user_func_array(array($redis, 'rawCommand'), $param);
    print_r($ret);
} catch (Exception $e){
    echo $e->getMessage();
}

执行结果

Array
(
    [0] => Array
        (
            [0] => 115.79384654760360718
            [1] => 40.58445845049069334
        )
    [1] => Array
        (
            [0] => 114.1738244891166687
            [1] => 27.47456377424472151
        )
    [2] => Array
        (
            [0] => 103.90176326036453247
            [1] => 31.60486909089710394
        )
)

3.计算两个坐标间距离

try {
    $redis = new Redis();
    $redis->connect('192.168.75.132', 6379);
    $param = array('geodist', 'mountainCoordinates', 'Hai_tuo', 'Small_wutai', 'km');
    $ret = call_user_func_array(array($redis, 'rawCommand'), $param);
    var_dump($ret);
} catch (Exception $e){
    echo $e->getMessage();
}

执行结果:海陀山和小五台山之间距离是94.4219km

string(7) "94.4219"

4.以我的坐标为原点,按半径100km取坐标(找出离我100公里以内的山)

try {
    $redis = new Redis();
    $redis->connect('192.168.75.132', 6379);
    $param = array('georadius', 'mountainCoordinates', '116.517159', '39.922267', '100', 'km', 'WITHDIST', 'WITHCOORD');
    $ret = call_user_func_array(array($redis, 'rawCommand'), $param);
    print_r($ret);
} catch (Exception $e){
    echo $e->getMessage();
}

执行结果:只有海陀山,离我95.8884km

Array
(
    [0] => Array
        (
            [0] => Hai_tuo
            [1] => 95.8884
            [2] => Array
                (
                    [0] => 115.79384654760360718
                    [1] => 40.58445845049069334
                )
        )
)

5.以我的坐标为原点,按半径1500km取坐标(找出离我1500公里以内的山)

try {
    $redis = new Redis();
    $redis->connect('192.168.75.132', 6379);
    $param = array('georadius', 'mountainCoordinates', '116.517159', '39.922267', '1500', 'km', 'WITHDIST', 'WITHCOORD');
    $ret = call_user_func_array(array($redis, 'rawCommand'), $param);
    print_r($ret);
} catch (Exception $e){
    echo $e->getMessage();
}

执行结果:找出了5座山

Array
(
    [0] => Array
        (
            [0] => Jiu_ding
            [1] => 1464.4350
            [2] => Array
                (
                    [0] => 103.90176326036453247
                    [1] => 31.60486909089710394
                )
        )
    [1] => Array
        (
            [0] => Ao_Shan
            [1] => 1039.1217
            [2] => Array
                (
                    [0] => 107.3980066180229187
                    [1] => 34.05777705537607147
                )
        )
    [2] => Array
        (
            [0] => Wu_gong
            [1] => 1401.2353
            [2] => Array
                (
                    [0] => 114.1738244891166687
                    [1] => 27.47456377424472151
                )
        )
    [3] => Array
        (
            [0] => Small_wutai
            [1] => 124.6283
            [2] => Array
                (
                    [0] => 115.05623370409011841
                    [1] => 39.94893288365195616
                )
        )
    [4] => Array
        (
            [0] => Hai_tuo
            [1] => 95.8884
            [2] => Array
                (
                    [0] => 115.79384654760360718
                    [1] => 40.58445845049069334
                )
        )
)

6.以小五台山的坐标为原点,按半径1000km取坐标(找出离小五台山1000公里以内的山)

try {
    $redis = new Redis();
    $redis->connect('192.168.75.132', 6379);
    $param = array('georadiusbymember', 'mountainCoordinates', 'Small_wutai', '1000', 'km', 'WITHDIST', 'WITHCOORD');
    $ret = call_user_func_array(array($redis, 'rawCommand'), $param);
    print_r($ret);
} catch (Exception $e){
    echo $e->getMessage();
}

执行结果:排除小五台自己,找到了鳌山和海陀山

Array
(
    [0] => Array
        (
            [0] => Small_wutai
            [1] => 0.0000
            [2] => Array
                (
                    [0] => 115.05623370409011841
                    [1] => 39.94893288365195616
                )
        )
    [1] => Array
        (
            [0] => Hai_tuo
            [1] => 94.4219
            [2] => Array
                (
                    [0] => 115.79384654760360718
                    [1] => 40.58445845049069334
                )
        )
    [2] => Array
        (
            [0] => Ao_Shan
            [1] => 943.7873
            [2] => Array
                (
                    [0] => 107.3980066180229187
                    [1] => 34.05777705537607147
                )
        )
)

以上就是PHP使用Redis的GEO(地理位置)命令的详细内容,更多请关注吆喝资源网其它相关文章!

本文转自PHP中文网,吆喝网(http://yaoohe.com)搜集整理,如有疑问请联系本站客服!

本文来源网络,其内容均为发表者提供,文章内容系作者个人观点,不代表本站对观点赞同或支持。如需有侵权,请在7日内联系本站客服进行处理,否则视为放弃追究权利,客服QQ:787749153,请注明。
1

发表评论