does explode get executed more than once in a foreach?
<pre><code>$array='hello hello2';
foreach(explode(' ',$array) as $v)
 echo $v;
</code></pre>

<p>How many times does explode get executed?</p>

<p>And is it better that to use another var like:</p>

<pre><code>   $exploded = explode(...);
   foreach($exploded as $v)
      ...
</code></pre>

<p>?</p>
