It seems that class methods are not really part of the class. The scope of
a method definition is global not local to the class. I have tried the
following: 

class CMyClass 
{ 
function Print () 
{ 
} 
} 

It doesn't work because the PHP parser thinks that the "Print"
method is the "print" PHP global function. I have tried to force
scope: 

class CMyClass 
{ 
function CMyClass::Print () 
{ 
} 
} 

But it doesn't work. The only solution I found is to use an other name for
my method, even if it really prints something.