Associativity and return by reference in PHP

associativity-reference.php

<?php

$objects = array(new stdClass, new stdClass);

while ($o =& next($objects) && true)
    var_dump($o); // stdClass object 
reset($objects);
while ($o = next($objects) && true)
    var_dump($o); // true
// Fix
reset($objects);
while (($o = next($objects)) && true)
    var_dump($o); // stdClass object