str_replace() with associative array
<p>You can use arrays with str_replace():</p>

<pre><code>$array_from = array ('from1', 'from2'); 
$array_to = array ('to1', 'to2');

$text = str_replace ($array_from, $array_to, $text);
</code></pre>

<p>But what if you have associative array?</p>

<pre><code>$array_from_to = array (
 'from1' =&gt; 'to1';
 'from2' =&gt; 'to2';
);
</code></pre>

<p>How can you use it with str_replace()?<br>
Speed matters - array is big enough.</p>
