在现有PHP安装中启用FTP功能

I know that when installing PHP you use --enable-ftp in the command line to enable FTP.

But if I have a PHP install that doesn't have FTP support and I want to add it, is there a way? Something in PHP.INI?

Or do I need to simply reinstall?

as of this link you have to add this to your php.ini:

extension=php_ftp.dll

You can also use this

https://github.com/phpseclib/phpseclib

if you want to do sFTP without enabling the ssh2 extension.