sample.php

<?php

include('TropoClasses.php');

$tropo = new Tropo();
$tropo->ask("Please say your account number.", array("require" => true, "bargein" => true, "timeout" => 30, "name" => "foo", "choices" => "[5 DIGITS]"));
$tropo->renderJSON();

/**
 * Rendered JSON
 * 
	{
	    "tropo": [
	        {
	            "ask": {
	                "bargein": true,
	                "choices": {
	                    "value": "[5 DIGITS]"
	                },
	                "name": "foo",
	                "say": {
	                    "value": "Please say your account number."
	                },
	                "timeout": 30
	            }
	        }
	    ]
	}
 * 
 */

?>

TropoClasses.php

<?php

// This is what the ask method in the main Tropo class will look like.
...

public function ask($prompt, Array $options) {
	$say = new say($prompt);
	$choices = isset($options["choices"]) ? new choices($options["choices"]) : null;
	$ask = new ask($options["attempts"], $options["bargein"], $choices, $options["minConfidence"], $options["name"], $options["required"], 
          $say, $options["timeout"]);		
	$this->ask = sprintf($ask);
}

..

?>