范例

目录

For Each

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.

示例 #1 For Each in ASP

<%
Set domainObject = GetObject("WinNT://Domain")
For Each obj in domainObject
  Response.Write obj.Name & "<br />"
Next
%>

示例 #2 foreach in PHP

<?php 
$domainObject = new COM("WinNT://Domain"); 
foreach ($domainObject as $obj) { 
   echo $obj->Name . "<br />"; 
} 
?>

Arrays and Array-style COM properties

Many COM objects expose their properties as arrays, or using array-style access.

You can:

  • Access multi-dimensional arrays, or COM properties that require multiple parameters using PHP array syntax. You can also write or set properties using this technique.

  • Iterate SafeArrays ("true" arrays) using the foreach control structure. This works because SafeArrays include information about their size. If an array-style property implements IEnumVariant then you can also use foreach for that property too; take a look at for more information on this topic.