Answer by Kurt A. ·
PHP on Apache
In general we license PHP per parent process id (PID) of Apache, that means it's independent from the number of
We consume only one PHP license per Apache HTTP Server.
There is a exception, where we might consume 2 PHP licenses: If PHP-FPM (FastCGI Process Manager) is used (an alternative PHP FastCGI implementation). It can be configured to run one pool for the FPM workers (parent 1 = license 1) and another virtual host (parent 2 = license 2) an additional pool of workers.
PHP on Internet Information Server
Running PHP in Internet Information Server (IIS), consumes also one license per parent process id (PID), which is in this case the IIS worker process (w3wp.exe).
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