MetaRadio: Simple PHP Now Playing Script (Example)

metaradio_input.php

<?php
// This script receives data from MetaRadio's HTTP Output module
// This is a simple example. Feel free to make it your own.
// https://mediarealm.com.au/metaradio/


// Specify a secret username and password
$username = "---SECRET-USERNAME---";
$password = "---PASSWORD-USERNAME---";

// Where to store the now-playing data on this web server?
$filename = "metaradio.json";


// No need to edit below this line (unless you want to)
// *********************************************************

header('X-Powered-By: MetaRadio');

if (!isset($_SERVER['PHP_AUTH_USER']) || !isset($_SERVER['PHP_AUTH_PW']) || $_SERVER['PHP_AUTH_USER'] !== $username || $_SERVER['PHP_AUTH_PW'] !== $password) {
    header('WWW-Authenticate: Basic realm="MetaRadio-Input"');
    header('HTTP/1.0 401 Unauthorized');
    echo 'Please supply a username and password via HTTP Basic Authentication';
    die();
}

$fp = fopen('vardump.txt', 'w');
fwrite($fp, serialize($_POST));
fclose($fp);

// Check for supplied data
if(!isset($_POST['title']) || !isset($_POST['artist']) || empty($_POST['title']) || empty($_POST['artist'])) {
    die("ERROR: Title & Artist have not been supplied");
}

// Get the data and put it into an array
$data = array(
    "Now" => array(
        "Title" => trim($_POST['title']),
        "Artist" => trim($_POST['artist']),
        "Album" => trim($_POST['album']),
        "DurationSecs" => (Integer)trim($_POST['durationsecs']),
        "PlayoutID" => trim($_POST['playoutid']),
        "ItemCode" => trim($_POST['itemcode']),
        "DateReceived" => date("Y-m-d H:i:s"),
    )
);

// Save the array to a JSON file
$fp = fopen($filename, 'w');
fwrite($fp, json_encode($data));
fclose($fp);

metaradio_nowplaying.php

<?php
// This script displays the data received by 'metaradio_input.php'
// This is a simple example to display now-playing data. Feel free to make it your own.
// https://mediarealm.com.au/metaradio/

// Where is the now-playing data stored on this web server?
$filename = "metaradio.json";

// Show this text whenever there's no track currently playing
$fallbacktext = "Playing the greatest hits!";


// No need to edit below this line (unless you want to)
// *********************************************************

if(basename(__FILE__) == basename($_SERVER["SCRIPT_FILENAME"]))
    header('X-Powered-By: MetaRadio');

if(!file_exists($filename)) {
    echo "ERROR: File " . $filename . " does not exist.";
} else {
    // Open the file
    $fp = fopen($filename, 'r');
    $data = json_decode(fread($fp, filesize($filename)), true);

    if(isset($data['Now']['DateReceived'])) {
        // Calculate the end-time of the current 'now playing' file
        $endTime = strtotime($data['Now']['DateReceived']) + $data['Now']['DurationSecs'];
        
        if($endTime >= time()) {
            // Item hasn't ended already - show the data
            $now = "Now Playing: " . $data['Now']['Title'] . " - " . $data['Now']['Artist'];
        }
    }

    if(isset($now)) {
        echo $now;
    } else {
        echo $fallbacktext;
    }
}