Multidimensional array diff
<p>I got 2 arrays:</p>

<pre><code>$big_array = array (
                    array (
                            array (
                                      'correct' =&gt; FALSE,
                                      'answer' =&gt; 'false answer1'
                            ),
                            array (
                                      'correct' =&gt; FALSE,
                                      'answer' =&gt; 'false answer2'
                            ),
                            array (
                                      'correct' =&gt; FALSE,
                                      'answer' =&gt; 'false answer3'
                            ),                  
                            array (
                                      'correct' =&gt; TRUE,
                                      'answer' =&gt; 'correct answer'
                            )
                    )
);

$small_array = array (
                    array (
                            array (
                                      'correct' =&gt; FALSE,
                                      'answer' =&gt; 'false answer1'
                            )
                    )
);
</code></pre>

<p>I want to make <code>array_diff($big_array, $small_array)</code> but its not working how i want it to, currently it gives me an empty array as a result, where i want the outcome to be:</p>

<pre><code>$outcome_array= array (
                    array (
                            array (
                                      'correct' =&gt; FALSE,
                                      'answer' =&gt; 'false answer2'
                            ),
                            array (
                                      'correct' =&gt; FALSE,
                                      'answer' =&gt; 'false answer3'
                            ),                  
                            array (
                                      'correct' =&gt; TRUE,
                                      'answer' =&gt; 'correct answer'
                            )
                    )
);
</code></pre>

<p>Any suggestions?</p>
