I see multiple answers about creating php files in order to reuse headers/footers, but nothing specific enough. I can't seem to get it to work.
What exactly would the php file look like and what exactly would my html file look like (given the code as it currently is, below)? do I have to convert all my html files to php files in order to use the php include line?
<div id="footer2-wrap">
<div class="container">
<table id="header">
<tr>
<td class="phone-number"><span class='wsite-text wsite-phone'>Copyright 2015 | xxx Corporation</span></td>
</tr>
</table>
</div>