maxima serveur ?



Hello,
Is it possible to execute maxima with a web application (written in php) ? 
Here is an example of what I have in mind :

Exercise : calculate an indefinite integral of exp(a*x) if a = 2, the value 
2 being given by the web application for a given  user (a is a parameter 
that changes  with the user).

Imagine the user gives with of a web form the (good) maxima expression :
	%e^(2*x)/2 + 1
It is put within the database in a variable $r1.  The "good" answer for 
this exercise is the set of maxima instructions (a = 2 is given by the 
database) :
	a: 2;	br1: %e^(a*x);	r1: diff(r1, x);	ev(r1=br1, pred);
It is put within the database in a variable $br1. The following maxima 
performing :
	r1: $r1;		$br1
gives the TRUE value, as expected. Then this TRUE value is put in a boolean 
variable of the database.