Get category from wordpress rss [php] - php

Question

Hi i need help to get all categories from rss.
This is ex. of my rss feed:
<item>
<title>Coca-Cola</title>
<link>https://www.tralaaa.com/coca-cola/</link>
<comments></comments>
<pubDate>Fri, 01 Dec 2017 11:36:40 +0000</pubDate>
<dc:creator><![CDATA[Admin]]></dc:creator>
<category><![CDATA[cat1]]></category>
<category><![CDATA[cat2]]></category>
<category><![CDATA[cat3]]></category>
<category><![CDATA[cat4]]></category>
<description><![CDATA[]]></description>
<content:encoded><![CDATA[]]></content:encoded>
</item>
I try with $cat = $item->category(0); but give me the error
Call to undefined method SimpleXMLElement::category()

Answer 1

You cant access category using () parenthesis, you need to use [], like this:
$xml = new SimpleXMLElement(
'<item>
<title>Coca-Cola</title>
<link>https://www.tralaaa.com/coca-cola/</link>
<comments></comments>
<pubDate>Fri, 01 Dec 2017 11:36:40 +0000</pubDate>
<dc:creator><![CDATA[Admin]]></dc:creator>
<category><![CDATA[cat1]]></category>
<category><![CDATA[cat2]]></category>
<category><![CDATA[cat3]]></category>
<category><![CDATA[cat4]]></category>
<description><![CDATA[]]></description>
<content:encoded><![CDATA[]]></content:encoded>
</item>');
$cat_name1 = $xml->category[0]->__toString();
$cat_name2 = $xml->category[1]->__toString();
$cat_name3 = $xml->category[2]->__toString();
$cat_name4 = $xml->category[3]->__toString();
echo "<pre>";
print_r($cat_name1);
echo "</pre>";
echo "<pre>";
print_r($cat_name2);
echo "</pre>";
echo "<pre>";
print_r($cat_name3);
echo "</pre>";
echo "<pre>";
print_r($cat_name4);
echo "</pre>";
this will output:
you can just:
$xml->category->__toString();
it will assume you want the first category.