PHP - How to concatenation 2 php var for create a new php var? : <p>PHP - How to concatenation 2 php var for create a new php var?</p>

<p>I want to concatenation <code>$test</code> with <code>$i</code> for create a new php var.</p>

<p>like this but not work, how can i do ?</p>

<pre><code>&lt;?PHP
$i = "5";
$test_$i = "WELCOME";
echo $test_5;
?&gt;
</code></pre>
