extract data from a feed

Hi all,
I have been given a url that shows a live stream of "what's playing" from a radio station.
The feed can be seen here http://brian1.streamon.fm/card
The data contains info such as what's playing now, the album cover of what's playing now, artist etc as well as what's playing next.
I can see the data on the page however Id like to exrtact some of the information as variables so I can echo them on the page of the radio stations website (preferably using php however d be open to java solutions).
Could anyone assist?
Cheers,
N
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Neil_BradleyWeb UX/UI DeveloperAsked:
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Brian TaoSenior Business Solutions ConsultantCommented:
The content is actually a JSON string.  You can use json_decode function to extract the data into either an array or an object

$given_url = "http://brian1.streamon.fm/card";
$json_str = file_get_contents($given_url);
// parse it into an array
$result_array = json_decode($json_str, true);
echo "To Array:\n";
print_r($result_array);
// or parse it into an object
$result_obj = json_decode($json_str);
echo "\nTo Object:\n";
print_r($result_obj);

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Neil_BradleyWeb UX/UI DeveloperAuthor Commented:
Thanks for that however it prints all of the data.
I only need:
the title of the song playing now,
the artists
album name
album cover
How would I go about extracting only that info and declaring them as simple variables.
Cheers,
N
Neil_BradleyWeb UX/UI DeveloperAuthor Commented:
Would it be simpler to convert the JSON string into xml first then extract the data from that?
N
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Brian TaoSenior Business Solutions ConsultantCommented:
No, the data is already extracted as array elements.  To display what you intended:
$given_url = "http://brian1.streamon.fm/card";
$json_str = file_get_contents($given_url);

// parse it into an array
$result_array = json_decode($json_str, true);

$title = $result_array["title"];
$artist = $result_array["artist"];
$album = $result_array["album"];
$album_cover_url = $result_array["album_art"]["src"];

echo "Now playing: $title<br>\n";
echo "The artists: $artist<br>\n";
echo "Album Name: $album<br>\n";
echo "<img src='$album_cover_url'>";

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Ray PaseurCommented:
Would it be simpler to convert the JSON string into xml first then extract the data from that?
No, and you can't reliably do this conversion.  XML has data in string format only, whereas JSON provides for boolean and numeric values, etc.  The JSON data format is curated here: http://json.org

Please see: http://iconoun.com/demo/temp_neil_bradley.php

<?php // demo/temp_neil_bradley.php
error_reporting(E_ALL);
echo '<meta charset="utf8" />';
echo '<pre>';

// ACQUIRE THE JSON STRING AND MAKE AN OBJECT
$url = 'http://brian1.streamon.fm/card';
$jso = file_get_contents($url);
$obj = json_decode($jso);

// ACTIVATE THIS TO SEE THE ENTIRE OBJECT
// var_dump($obj);

// GET SOME OF THE PROPERTIES OF THE OBJECT
$t = (string)$obj->title;
$p = (string)$obj->publisher;
$a = (string)$obj->album_art->src;
echo PHP_EOL . "$t FROM $p";
echo PHP_EOL . '<img src="' . $a . '" />';

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Neil_BradleyWeb UX/UI DeveloperAuthor Commented:
Thanks to you both for your input and the advice re xml.
The solutions you offered both worked extremely well and solved the problem perfectly.
All the best.
Neil
Ray PaseurCommented:
Glad to help -- thanks for the points, ~Ray
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