unique id of variable (like spl_object_hash)
<p>Is it possible to get unique id of scalar/array variable in PHP5.3
Something like object hash for objects. For example i have:</p>

<pre><code>$a = array(1, 2, 3);
$b = &amp;$a;
</code></pre>

<p>so unique id for variable $a and $b, has to be same, maybe derrived from memory pointer.
I didn't find any alternative function to <a href="http://php.net/spl_object_hash" rel="nofollow"><code>spl_object_hash</code></a>.</p>
