How to extract the values from a nested array into another array
<p>This is the array I want to extract from:</p>

<pre><code>Array
    (
        [0] =&gt; Array
            (
                [id] =&gt; 11
                [order_id] =&gt; 6127
            )

        [1] =&gt; Array
            (
                [id] =&gt; 12
                [order_id] =&gt; 6123
            )

    )
</code></pre>

<p>This is what I need: </p>

<pre><code>$results = array()
$results(6127, 6123)
</code></pre>

<p>There can be any number of arrays within the first array.</p>
