PHP use of what appears to be an operator "=>"
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/3737139/reference-what-does-this-symbol-mean-in-php">Reference - What does this symbol mean in PHP?</a>  </p>
</blockquote>



<p>Take this snippet of code for instance:</p>

<pre><code>$files[] = array('name' =&gt; $d, 'tmp_name' =&gt; $fdata['tmp_name'][$i]);
</code></pre>

<p>What is the specific definition, name and usage of what only appears to be the operator <code>=&gt;</code></p>
