The following script :
18:19 [webase3:pts/0] titi:~% cat test.php 
<?
class toto {
  var $temp = array("required" => TRUE);
}

$toto = new toto;
echo $toto->temp["required"]."\n";
?>

produces :

18:19 [webase3:pts/0] titi:~% php test.php 
Content-Type: text/html


[Sat Nov 20 18:19:37 1999]  Script:  'test.php'
---------------------------------------
zend_execute_API.c(215) : Block 0x081001A0 status:
zend_variables.c(62) : Actual location (location was relayed)
Beginning:      Cached (allocated on ./zend-scanner.l:1090, 5 bytes)
      End:      OK
---------------------------------------

which is not what I would have expected.