A simple, procedural PHP script to create Google Authenticator secrets and corresponding QR codes,
then verify the entered response over a given time variance.
homepage documentation glossary server source
Your installation will use OpenSSL.
This is the second best option, maybe try installing
RandomBytes is used for secure key generation.
MCrypt is used for secure key generation.
OpenSSL is used as a fallback for secure key generation.
The GD functions are loaded. You can create QR Codes.
The GD extension is used for generating a secure QR code.