Starting with PHP 5, you may use PHP's own foreach statement to iterate over the contents of a standard COM/OLE IEnumVariant. In layman's terms, this means that you can use foreach in places where you would have used For Each in VB/ASP code.
Example #1 For Each in ASP
<%
Set domainObject = GetObject("WinNT://Domain")
For Each obj in domainObject
Response.Write obj.Name & "<br />"
Next
%>
Example #2 foreach in PHP
<?php
$domainObject = new COM("WinNT://Domain");
foreach ($domainObject as $obj) {
echo $obj->Name . "<br />";
}
?>
As described in the PHP 5 COM changes article: http://devzone.zend.com/node/view/id/762
You not just "may use foreach statement", but you have to, because $domainObject->Next() is not available in PHP 5 (syntax has been dropped, not backwards compatible)