Get Site Information with PHP

<?php

// Header...
header("Content-Type: text/html; charset=utf-8");

// FUNCTION Starts Here
FUNCTION getInfo($URL){
  $getInfo= get_meta_tags($URL);
  RETURN $getInfo;
}

// URL
$URL = "http://www.xxxxxxx.com";

$_getInfo = getInfo($URL);

         // PRINT.
         echo "$URL <p>";
         echo $_getInfo ["author"]."<p>";
         echo $_getInfo ["keywords"]."<p>";
         echo $_getInfo ["description"]."<p>";
         echo $_getInfo ["robots"]."<p>";
?>