<?php

    $username = "user";
    $password = "password";

    $postData = array(
            'username' => $username,
            'password' => $password,
            'msisdn' => "111111111"
            );

    $ch = curl_init('http://ip:<port>/xxx/yyy/zzz');

    curl_setopt_array($ch, array(
    CURLOPT_POST => TRUE,
    CURLOPT_RETURNTRANSFER => TRUE,
    CURLOPT_HTTPHEADER => array(
        'Content-Type: application/json'
    ),
    CURLOPT_POSTFIELDS => json_encode($postData)
    ));

    // Send the request
    $response = curl_exec($ch);

    // Check for errors
    if($response === FALSE){
    die(curl_error($ch));
    }

    // Decode the response
    $responseData = json_decode($response, TRUE);

    // Print the date from the response
    echo $responseData['published'];

    var_dump($responseData);

    ?>