(I sent this to the dev list before, but I haven't heard anything so I figured I'd better do the right thing and enter it in the bugs database)

Ok, this one's a bit bizarre. PHP4 Beta 1, running as an apache module
(1.3.6) on RH 6.0, compiled with imap support.                                                                                                                      
Here's the test script:

test.php3:

<?php
include 'class.inc';
require 'class2.inc';
$foo = new Bar2();
echo 'foo';
?>


class.inc:

<?php
class Bar {
  function Bar () {
  }                                                                                                                                                                 
}                                                                                                         ?>


class2.inc:

<?php
class Bar2 extends Bar {
  var $parent;
  function Bar2 () {
    $this->Bar();
  }
}
?>

In php3, this works fine. In php4, I get:
Fatal error: Class bar2: Cannot inherit from undefined class bar in

class2.inc on line 7

If both classes are required, both included, *or* the first required and the
second included, it works fine. It only happens when the include comes first.

Is this unavoidable due to require() being evaluated before parsing the file? But that can't be completely true since you can use a variable as an argument to require()...?