Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:9887
Return-Path: <robert@peakepro.com>
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Delivered-To: mailing list internals@lists.php.net
Received: (qmail 20695 invoked by uid 1010); 17 May 2004 04:20:15 -0000
Delivered-To: ezmlm-scan-internals@lists.php.net
Delivered-To: ezmlm-internals@lists.php.net
Received: (qmail 20639 invoked by uid 1007); 17 May 2004 04:20:15 -0000
To: internals@lists.php.net
User-Agent: Microsoft-Entourage/10.1.4.030702.0
Message-ID: <BCCD76F3.6B11%robert@peakepro.com>
Mime-version: 1.0
X-Associated-WebSite: http://www.peakepro.com
Content-Type: text/plain; charset="US-ASCII"
Content-transfer-encoding: 7bit
Lines: 66
Date: Mon, 17 May 2004 02:52:19 GMT
X-Posted-By: 192.252.1.51
Subject: Advanced OO Topic
From: robert@peakepro.com (Robert Peake)

Hi,

I notice a strange behavior in PHP4 and wonder if anyone can explain it.

Essentially, when I extend a class from a built-in module, I can add and
access variables but can not access new functions I create within the
extended class. 

This has only happened attempting to extend classes from ming, but I suspect
it may be a universal problem (?).

That is:

<?PHP
class foo {

}

class bar extends foo {
  function bar() {
    print "bar";
  }
}

$bar = new bar();
$bar->bar(); //PRINTS "bar"
?>

Works as expected, however, in:

<?PHP

class foo extends SWFSprite {
  
  var $x = 10;

  function bar() {
    print "bar";
  }

}

?>

running:

<?PHP

$foo = new foo();
print $foo->x; //WORKS; PRINTS "10"
$foo->bar(); //RETURNS "Undefined Function" FATAL ERROR

?>

Can anyone explain this behavior? Will it be fixed in PHP5? Is it related to
the Zend engine? Any workarounds?

Many thanks in advance.

Best,
Robert

-- 
Robert Peake         |  Peake Professional Consulting
Robert@PeakePro.com  |  http://www.peakepro.com/