php - 如何在 MYSQL Point 中存储两个 API 值

Question

我从 PHP 中的 API 接收 lan 和 lot 数据，并使用($jsonData[0]['lat']);和从响应中提取它们$jsonData[0]['lon']);。如何将它们添加为我的两个 MySQL 列location作为 POINT 值？

Answer 1

MySQL's geometry stuff offers the ST_GeomFromText() function. You can use it like this.

ST_GeomFromText('POINT(40.7488 -73.9854)')

Notice that 'POINT(40.7488 -73.9854)' is a text string, and that there's no comma between the two numbers.

If you do something like this to make one of those text strings

$pointText = "POINT(" . $jsonData[0]['lat'] . " " .  $jsonData[0]['lon'] . ")";

then you can do an insert like this:

INSERT INTO tbl (geocolumn) VALUES (ST_GeomFromText(?));

with $pointText as the parameter.

With MySQL versions prior to 8, I agreed with @El_Vanja's suggestion of using separate FLOAT columns for lat / long. But with version 8, MySQL has the ability to handle spherical as well as cartesian coordinate systems, so the spatial index can be very useful.