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Parse iTunes RSS


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I'm currently working on a project which involves iTunes RSS feeds.


For example, this is the RSS feed for the current top 10 singles in the UK iTunes store



Taking a look at the code, here is an example entry from that feed:

<entry>    <updated>2013-08-09T09:23:18-07:00</updated>    <id im:id="667931604">https://itunes.apple.com/gb/album/wake-me-up/id667931602?i=667931604&uo=2</id>'>https://itunes.apple.com/gb/album/wake-me-up/id667931602?i=667931604&uo=2</id>    <title>Wake Me Up - Avicii</title>    <im:name>Wake Me Up</im:name>    <link rel="alternate" type="text/html" href="https://itunes.apple.com/gb/album/wake-me-up/id667931602?i=667931604&uo=2"/>    <im:contentType term="Music" label="Music"><im:contentType term="Track" label="Track"/></im:contentType>    <category im:id="17" term="Dance" scheme="https://itunes.apple.com/gb/genre/music-dance/id17?uo=2" label="Dance"/>    <link title="Preview" rel="enclosure" type="audio/x-m4a" href="http://a1130.phobos.apple.com/us/r2000/010/Music6/v4/c2/d7/c8/c2d7c88d-9c72-fe8b-bf15-6339bd0d2ed7/mzaf_7989860748510150629.plus.aac.p.m4a" im:assetType="preview"><im:duration>30000</im:duration></link>    <im:artist href="https://itunes.apple.com/gb/artist/avicii/id298496035?uo=2">Avicii</im:artist>    <im:price amount="0.99000" currency="GBP">£0.99</im:price>    <im:image height="55">http://a1697.phobos.apple.com/us/r2000/019/Music6/v4/41/45/93/4145934f-b7b9-76e1-f190-05b50a4588e1/13UAAIM09848.55x55-70.jpg</im:image>    <im:image height="60">http://a419.phobos.apple.com/us/r2000/019/Music6/v4/41/45/93/4145934f-b7b9-76e1-f190-05b50a4588e1/13UAAIM09848.60x60-50.jpg</im:image>    <im:image height="170">http://a1266.phobos.apple.com/us/r2000/019/Music6/v4/41/45/93/4145934f-b7b9-76e1-f190-05b50a4588e1/13UAAIM09848.170x170-75.jpg</im:image>    <rights>℗ 2013 Avicii Music AB, under exclusive license to Universal Music AB</rights>    <im:releaseDate label="25 June 2013">2013-06-25T00:00:00-07:00</im:releaseDate></entry>

Having followed some advice from elsewhere - http://stackoverflow.com/questions/9965370/parse-itunes-rss-atom-feed-with-php - I have managed to get hold of all data, with the exception of one thing.


Frm the line below, I need to be able to get the value of 'im:id' (i.e. 667931604)

<id im:id="667931604">https://itunes.apple.com/gb/album/wake-me-up/id667931602?i=667931604&uo=2</id>'>https://itunes.apple.com/gb/album/wake-me-up/id667931602?i=667931604&uo=2</id>

Here's the code I have so far:

$itunes_xml = file_get_contents('https://itunes.apple.com/gb/rss/topsongs/limit=10/explicit=true/xml');// Remove the colon ":" in the <xxx:yyy> to be <xxxyyy>$itunes_xml = preg_replace("/(</?)(w+)[^>]*>)/", "$1$2$3", $itunes_xml);$itunes_xml = simplexml_load_string($itunes_xml);foreach ($itunes_xml->entry as $entry) {    echo $entry->id['im:id']; // This doesn't work    echo $entry->imprice['amount']; // This works}

To me, it looks like the colon in 'im:id' is breaking the script. I'm aware of the preg_replace function that has been used, so maybe that is causing the issue, but if I remove it then I'm unable to retrieve other elements of the feed.


Is anybody aware of a fix for this? I'd appreciate any help.

Edited by Manny
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var_dump returns:

object(SimpleXMLElement)#4 (1) { [0]=> string(73) "https://itunes.apple.com/gb/album/wake-me-up/id667931602?i=667931604&uo=2" }

That's what I expected, as that is the actual value of 'id'. It doesn't pick up the 'im'id' parameter though. :aggressive:

<id im:id="667931604">https://itunes.apple.com/gb/album/wake-me-up/id667931602?i=667931604&uo=2</id>
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That's done the job. For anybody else who runs into this problem in the future, here is how to get the value of 'im:id'.

<?php$itunes_feed = "https://itunes.apple.com/gb/rss/topsongs/limit=10/explicit=true/xml";$itunes_feed = file_get_contents($itunes_feed);$itunes_feed = preg_replace("/(</?)(w+)[^>]*>)/", "$1$2$3", $itunes_feed);$itunes_xml = new SimpleXMLElement($itunes_feed);$itunes_entry = $itunes_xml->entry;foreach($itunes_entry as $entry){	    // Get the value of the entry ID, by using the 'im' namespace within the <id> attribute    $entry_id['im'] = $entry->id->attributes('im', TRUE);    echo $entry_id['im']['id'];}?>

I found a little extra help over at http://stackoverflow.com/questions/12325821/getting-xml-attributes-in-php


Thank you very much, justsomeguy.

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