<?php
echo phpversion().chr(10);

class BaseClass {
    function __construct() {
        print "In BaseClass constructor\n";
    }
}

class SubClass extends BaseClass {
    function __construct() {
        parent::__construct();
        print "In SubClass constructor\n";
    }
}

$obj = new BaseClass();
$obj = new SubClass();
?>

This example ( taken from: http://www.php.net/source.php?url=/zend2_example.phps )

gives me the following output:

--output--
4.3.0RC2
----------

So __construct() doesn't seem to be called. 

If I rename __construct() on BaseClass class to BaseClass() i get this output:
--output--
4.3.0RC2
In BaseClass constructor
In BaseClass constructor
----------

4.3.0RC2 doesn't come with Zend Engine 2; from PHP 5 on this will be the used engine.

not a bug -> bogus

Derick