Hola
<offtopic>El manual de ZEND PHP 5 dice
Cita: Variable variables are a very powerful tool, and should be used with extreme care, not
only because they can make your code difficult to understand and document, but also
because their improper use can lead to some significant security issues.
A technique similar to variable variables can also be used to hold function names inside a variable:
function myFunc() {
echo ’myFunc!’;
}
$f = ’myFunc’;
$f(); // will call myFunc();
</offtopic>
Suerte