在PHP中将MySQL数据库导出为Excel CSV到桌面

I've been looking for ways to enable EXPORT feature for my database website. My goal is to construct a very simple PHP code to do this, all it needs is to export the contents of one of my MySQL tables to the user's desktop or give the user a clickable link so he can download the exported database. The DB must be in Excel/CSV (As I will be using this feature for import/export DB backup feature as well).I've been looking for ways to enable EXPORT fea