PHP OCSP script

I have here an OCSP script in PHP. It is not needed if you use the 
apache modified distribution from FedICT:ocsp is included in apache. But
 if you use a standard distribution that is automatically updated 
against new security treats (like me!), you need this. (Probably OCSP 
will be included in apache 2.4?): 

Managing X.509 certificates using PHP

To generate, sign and verify certificates you need to have OpenSSL module installed and provide file with OpenSSL configuration.