What's the simplest way to make a HTTP GET request in Perl?

/**
 * Makes a remote call to the our API, and returns the response
 * @param cmd {string} - command string ID
 * @param argsArray {array} - associative array of argument names and argument values
 * @return {array} - array of responses
 */
function callAPI( $cmd, $argsArray=array() )
{
   $apikey="MY_API_KEY";
   $secret="MY_SECRET";
   $apiurl="https://foobar.com/api";

   // timestamp this API was submitted (for security reasons)
   $epoch_time=time();

   //--- assemble argument array into string
   $query = "cmd=" .$cmd;
   foreach ($argsArray as $argName => $argValue) {
       $query .= "&" . $argName . "=" . urlencode($argValue);
   }
   $query .= "&key=". $apikey . "&time=" . $epoch_time;

   //--- make md5 hash of the query + secret string
   $md5 = md5($query . $secret);
   $url = $apiurl . "?" . $query . "&md5=" . $md5;

   //--- make simple HTTP GET request, put the server response into $response
   $response = file_get_contents($url);

   //--- convert "|" (pipe) delimited string to array
   $responseArray = explode("|", $response);
   return $responseArray;
}

use LWP::Simple;
$contents = get("http://YOUR_URL_HERE");

use LWP::Simple;
$content = get($url);
die "Can't GET $url" if (! defined $content);