WAMP hash not generating
<p>The following code is not generating an output in WAMP on windows.</p>

<p>Works fine on MAMP.</p>

<p>Guessing it's a missing module or something.</p>

<pre><code>$reportHash = str_replace(
        array('+','/','='),
        array('-','_',''),
        base64_encode(file_get_contents('/dev/urandom', null, null, -1, 16)));
</code></pre>
