pure PHP RADIUS client based on the SysCo/al implementation

 Dapphp\Radius is a pure PHP RADIUS client for authenticating users against a
 RADIUS server in PHP. It currently supports basic RADIUS auth using PAP, CHAP
 (MD5), MSCHAP v1, and EAP-MSCHAP v2. The current 2.5.x branch is tested to
 work with Microsoft Windows Server 2012 to 2019 Network Policy Server and
 FreeRADIUS 2 and above.
 .
 PAP authentication has been tested on:
  * Microsoft Radius server IAS
  * Mideye RADIUS Server
  * Radl
  * RSA SecurID
  * VASCO Middleware 3.0 server
  * WinRadius
  * ZyXEL ZyWALL OTP
 .
 The PHP openssl extension is required if using MSCHAP v1 or v2. For older PHP
 versions that have mcrypt without openssl support, then mcrypt is used.