How do you read from a multidimensional variant array returned from a COM object in PHP?

问题

I'm working with a COM object that returns a multidimensional VARIANT array (vt_array), and I'm trying to read values from the array.

When I use print_r($mdArray) it displays variant Object. (variant_get_type($mdArray) returns 8204.)

I tried using foreach ($mdArray as $oneArray) but I get the message:

Warning: Loader::getfields() [loader.getfields]: Can only handle single dimension variant arrays (this array has 2) in C:\Inetpub\wwwroot\root\script\fileloader.php on line 135 Fatal error: Uncaught exception 'Exception' with message 'Object of type variant did not create an Iterator' in C:\Inetpub\wwwroot\root\script\fileloader.php:135 Stack trace: #0 C:\Inetpub\wwwroot\root\script\fileloader.php(135): Loader::getfields() #1 C:\Inetpub\wwwroot\root\testloader.php(21): Loader->getfields() #2 {main} thrown in C:\Inetpub\wwwroot\root\script\fileloader.php on line 135

(The foreach loop is on line 135)

The only information I can get about the array is by using count($mdArray) which returns 8.

If anyone here has any experience reading from multidimensional VARIANT arrays please tell me how this can be done.

回答1:

Try this to extract array values through "VBScript". Yes, you read that right...

<?php

$com = new COM("MSScriptControl.ScriptControl");
$com->Language = 'VBScript';
$com->AllowUI = false;
$com->AddCode('
    Function getArrayVal(arr, indexX, indexY)
        getArrayVal = arr(indexX, indexY)
    End Function
');

$y1 = 0;
$y2 = 1;
for ($x=0; $x < count($mdArray); $x++) {
    echo $com->Run('getArrayVal', $mdArray, $x, $y1) . ": ";
    echo $com->Run('getArrayVal', $mdArray, $x, $y2) . "\n";
    }

?>

Tested good on a VBScript-created array, which otherwise gave me the exact same issues and errors as you when trying to coerce it to behave like a PHP array. The above method spawned by the unholy union of PHP and VBscript should extract values piece by piece just fine.

To explain $y1 = 0; $y2 = 1;, keep in mind the parameters of the VBScript function are byref, so you can't pass anything in except a variable.

Edit: Added $com->AllowUI = false to shut off any on-screen popups. Otherwise it would freeze the request if a MsgBox() somehow got called from VBScript and no one was at the server terminal to click 'ok'.

来源：https://stackoverflow.com/questions/4800728/how-do-you-read-from-a-multidimensional-variant-array-returned-from-a-com-object

标签

php

multidimensional-array

variant

comobject