Description:
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There seems to be a safeguard in PHP5 against infinite magic method recursion in __get etc., but this is totally missing from the documentation ( php.net/manual/en/language.oop5.overloading.php ), making the more complex uses of setters/getters very fragile.

A few questions I would expect to be answered in such a documentation:
* does the magic method get fired when I use overloading inside a magic method of the same type? (e.g. will $val = $this->bar inside __get('bar') call  __get('bar') again?)
* does the magic method get fired when I use overloading inside a magic method of another type (e.g. will $val = $this->bar inside __isset('bar') call __get('bar')? Looks like it doesn't, which seems counterintuitive to me.)
* does the magic method get fired when I use overloading inside a magic method, but call that magic method manually? (ie. does it matter whether I call the magic method with $this->bar or with $this->__get('bar')?)
* does it matter whether the magic method is present in the call chain, or just the current method matters? Eg. in this class:

<?php
class Foo {
  function __isset($name) {
    $val = $this->bar('name');
    return isset($val);
  }
  function bar($name) {
    return $this->$name;
  }
}
?>

will isset($foo->bar) call Foo::__get('bar') or not?