Help testing if PHP is loaded.

All,
I am trying to load some php data into my flash piece and currently it's not showing up. Can someone please tell me how I can test if it's loaded or not?

Here is the code I am using to load the PHP:

Code:

---

var XML_FILENAME:String = "/flash_xml/espn-right.php";
if (flash_xml_path != null) { // use input path if provided
        XML_FILENAME = flash_xml_path + "espn-right.php";
}
//XML_FILENAME = "espn-right.example.xml";
//XML_FILENAME = "http://localhost/clients/SuccessFactors/src/flash_xml/espn-right.php";

---

Thanks a lot for looking in to this!