How can PHP be used to interact with Windows Server 2008 R2 printer queues?

To interact with Windows Server 2008 R2 printer queues using PHP, you can utilize the `exec()` function to run command-line utilities like `printui.dll`. This DLL provides functions to manage printer queues on Windows servers. By running specific commands through `exec()`, you can add, remove, list, and manipulate printer queues on the server.

// Example code to list all printer queues on Windows Server 2008 R2
$command = "rundll32 printui.dll,PrintUIEntry /q /t2 /n";
$output = shell_exec($command);
echo "<pre>$output</pre>";