List Twilio UK Area Codes

uk_area_codes_list.php

<?php

/**
 * This script requires a Twilio Account and the Twilio PHP Helper Library,
 * which can be found at http://www.twilio.com/docs/libraries
 */

// Require Twilio Helper Library
require('Services/Twilio.php');

// Provide Twilio Account Credentials
$accountSid = 'ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
$authToken = 'thisistheauthtokenwhichyoushouldnotshare';

// Connect to Twilio's API
$client = new Services_Twilio($accountSid, $authToken);

$i = 10;
$first_four = array();

// Make 20 API calls to Twilio's AvailablePhoneNumbers resource
// Each API call search for a different pair of digits at the beginning of the number
while($i < 30){

	$search = '44' . $i;
	$params = array('Contains' => $search);
	$numbers = $client->account->available_phone_numbers->getList('GB', 'Local', $params);
	foreach($numbers->available_phone_numbers as $number) {
		$first_four[] = substr($number->phone_number, 3, 4);	
	}
	$i++;
}

// Strip duplicates from array
$first_four = array_unique($first_four);

// Print Results
foreach($first_four as $n){
	echo('+44 '.$n.'******');
	echo('<br>');
}