<?php

// create soap client
$client = new SoapClient('http://ez4usms.com/api/soap/sms.wsdl');

// create recipients container
$to = new stdClass();
// add recipients
$to->recipients = array('306991111111', '306941234567');

// send message
$ID = $client->send('username', 'password', 'sender', $to, 'I am soap API!', 'UTF-8', true);

// check delivery status for each recipient
foreach( $to->recipients as $index => $recipient )
{
    echo $client->query('username', 'password', $ID, $recipient);
}

?>