Is it possible to include PHP code that is in memory?

Say I have a vari开发者_StackOverflow中文版able containing PHP code, can I include its content as if it was a normal PHP file ?

For example, the PHP code could be a class declaration.

---

You don't have a variable containing php code. You have a string. You can execute a string as php with the evil eval function, but puppies AND kittens will die!

---

eval($your_variable);

Be aware about security holes!This is very dangerous and should NOT be based on user's input !

---

You could use eval to evaluate any code that you have in your string, however it is evil. What exactly are you trying to do?