call.php

<?php 

    $base_url = "http://example.com/call.php";

    //log file if needed
    //file_put_contents("call.log", print_r($_REQUEST, true), FILE_APPEND);

    require 'twilio-php/Services/Twilio.php';
    
    // initiate response library
    $response = new Services_Twilio_Twiml;
    
    // if PhoneNumbers isn't an array, make it one
    if(!is_array($_REQUEST['PhoneNumbers']))
        $_REQUEST['PhoneNumbers'] = array($_REQUEST['PhoneNumbers']);
    
    // remove empty entries from PhoneNumbers
    $_REQUEST['PhoneNumbers'] = array_filter($_REQUEST['PhoneNumbers']);
        
    // Tell the person who picked up the message
    $response->say($_REQUEST['Message']);
    print $response;

    /* Now hang up on all of the other slow-pokes */
    $client = new Services_Twilio('Accountsid', 'Authtoken');

    $calls = $client->account->calls->getIterator(0, 50, array('Status' => 'ringing'));

    foreach ($calls as $call) {
      foreach ($_REQUEST['PhoneNumbers'] as $num) {
         if ($call->to == $num) {
           $call->hangup();
         }
      }
    }

?>

gistfile1.md

• Initiate outbound calls to 15551112222 and to 15553334444 using the Twilio REST API

• Set the Voice Request URL to:

  http://example.com/call.php?PhoneNumbers%5B0%5D=%2B15551112222&PhoneNumbers%5B1%5D=%2B15553334444&Message=Twilio%20is%20fun&

• The call that is connected first will request this URL and the caller will hear the message "Twilio is fun" read to them via TwiML. The script will then hangup on all the other ringing calls.