When developing an app and using php as the server, there is a function that people nearby can use to publish their own positioning when releasing dynamic content. Is there any good solution to do this in the php world?

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Compare the uploaded coordinates.

Geohash. This can compress two dimensions into one dimension.

Elasticsearch is recommended for good geographical location support.

Server:
Http://www.chengxiaobai.cn/ SQL /mysql-according-to-the-latitude-and-longitude-search-sort.html

Client: various map APIs

I think the subject attitude is extremely incorrect. How can I copy and paste it?