Multidimensional Array: How to get all values of a specific key?
<p>I have an multidimensional array which includes IDs and URLs. I would like to output the URLs only.</p>

<pre><code>$abstract_details = array(
                        array(
                            'id' =&gt; 68769782222,
                            'url' =&gt; 'http://yourclick.ch'
                        ),
                        array(
                            'id' =&gt; 111,
                            'url' =&gt; 'http://google.com'
                        )
                    );

foreach ($abstract_details as $abstract_detail) {
    foreach ($abstract_detail as $get_abstract_detail) {
        $result .= $get_abstract_detail . '&lt;br&gt;';
    }
}
</code></pre>

<p>When I run my code I get both information. How is it possible to take control of what I want to show?</p>