How to correctly convert geo coordinates to the desired format?

Question

PHP

Help a novice programmer)
I store geo-coordinates in a mysql table like decimal (18,14)
mask is 00.00000000000000
I get coordinates from Yandex in this form 69.295740
How to convert correctly to write to decimal (18,14)

Answer 1

Normally and in double WGS 84 coordinates are stored. No need to convert

Answer 2

Thank you, Peter!