PHP:Check duplicate values in all nested array
<p>I would like to find out a duplicate value in the all nested arrays within an array.
At the moment my array is something like that.</p>

<pre><code>Array $bigarray = Array (
    [431] =&gt; Array (
        [0] =&gt; orange 
        [1] =&gt; apple 
        [2] =&gt; pine
    ) 
    [440] =&gt; Array ( 
        [0] =&gt; orange 
        [1] =&gt; lilly 
    ) 
    [444] =&gt; Array (  
        [0] =&gt; orange 
        [1] =&gt; pine 
    ) 
)
</code></pre>

<p>I would like to extract only <code>orange</code> which is in all</p>

<pre><code>arrays('431','440','444').
</code></pre>

<p>Woudl you give me some idea...?
Thanks in advance.</p>
