PHP str_replace regex to remove link with tags
<p>How would I use str_replace to remove this following link and tags all together.</p>

<p>Tags needs to be removed, ignoring link and link text all together:</p>

<pre><code>&lt;p&gt;&lt;a href=""&gt;&lt;/a&gt;&lt;/p&gt;
</code></pre>

<p>Also, this one:</p>

<pre><code>&lt;p&gt;&lt;em&gt;&lt;a href=""&gt;&lt;/a&gt;&lt;/em&gt;&lt;/p&gt;
</code></pre>

<p>Note, I don't need to grab any content from this tags, simply remove them from my data. Thanks.</p>
