PHP array_diff not working
<p>I'm trying to use array_diff like so.  Here are my two array outputs:</p>

<p>List 1 Output</p>

<pre><code>Array ([0] =&gt; 0022806 ) 
</code></pre>

<p>List 2 Output</p>

<pre><code>Array ([0] =&gt; 0022806 [1] =&gt; 0023199 ) 
</code></pre>

<p>PHP</p>

<pre><code>$diff = array_diff($list_1, $list_2);

print "DIFF: " . count($diff) ."&lt;br&gt;";
print_r($diff);
</code></pre>

<p>The Output is:</p>

<pre><code>DIFF: 0
Array ( )
</code></pre>

<p>Any idea what I'm doing wrong?</p>
