I can't imagine this is possible but maybe there's some novel way. I'm developing an app which will require a few php files to be deployed and run on the clients' webservers. I'm not particularly interested in targeting clients who are still running pre version 5 versions of PHP.

So is there any way one can tell which version of PHP a remote webserver has running?


Question: Was Toad's slime attack meant to do more than kill Jean Grey in X1?
Answer: The script definitely does not say that:


  Suddenly, Toad lands in front of Jean, grabs her head and    before
  she can react, his tongue launches at her face.
  
  His tongue covers her face with an ADHESIVE SLIME.  Jean
  falls to the ground.  Toad looks back at the main    entrance, sees
  Cyclops emerging and LEAPS up, out of    frame.
  
  ANGLE ON:
  
  Cyclops stumbles out of the smoke filled building.    Seeing Jean
  lying on the ground, he runs to her.
  
  Cyclops turns Jean on her back, ready to perform CPR.  He    is
  shocked, the slime has now hardened to Jeanís face.    She is
  suffocating.  He desperately tries to pry it off.


So, it was merely meant to immobilize and suffocate her. No smell or ick attack.