PHP, extract content from HTML file

We may need to extract content from a HTML file. For example I got a HTML file from Tinymce editor as below:

<div class="mceContentBody">
<p>This is a test</p>

</div>

I only need the content:This is a test

We can use PHP function: strip_tags, which strips HTML and PHP tags from a string.

Below is the PHP code to extract content:  This is a test

<?php

 $mystring='

<div class="mceContentBody">
<p>This is a test</p>

</div>';
echo strip_tags($mystring);

?>