php replace a href to a href class with dynamic pages
<p>I have links in <code>&lt;blockquote&gt;</code> tag, i need replace links from <code>&lt;a href="https://site.com/*"</code> to <code>&lt;a href="https://site.com/*" class="MyClass"</code>.</p>

<p>Example:<br>
<code>&lt;a href="https://soundcloud.com/*"&gt;link&lt;/a&gt;</code> <br>
=>
<br>
 <code>&lt;a href="https://soundcloud.com/*" class="MyClass"&gt;link&lt;/a&gt;</code>
Halp please.</p>
