declare example crash on win32

This script from the manual (control structures->declare) crashes win32 using apache... it only seems to crash the child - it keeps generating the crash error every couple of seconds, the server is available for other requests afterwards. using PHP Version 4.3.0-dev System Windows NT localhost 5.0 build 2195 Build Date Apr 26 2002 04:10:45 Server API Apache Virtual Directory Support enabled Configuration File (php.ini) PathC:\WINNT\php.ini Debug Build no Thread Safety enabled PHP Streams enabled Apache 1.3.24 <?php // A function that records the time when it is called function profile ($dump = FALSE) {

    static $profile;

    // Return the times stored in profile, then erase it
    if ($dump) {
        $temp = $profile;
        unset ($profile);
        return ($temp);
    }

    $profile[] = microtime ();

} // Set up a tick handler register_tick_function("profile"); // Initialize the function before the declare block profile (); // Run a block of code, throw a tick every 2nd statement declare (ticks=2) {

    for ($x = 1; $x < 50; ++$x) {
        echo similar_text (md5($x), md5($x*$x)), "&lt;br&gt;";
    }

} // Display the data stored in the profiler print_r (profile (TRUE)); ?>