Where to look in order to edit text on PHP website?
<p>A friend of mine asked me to help him edit and add content to his PHP website.  It was originally created by a professional company which has now became his opponent.</p>

<p>I thought it would be easy to edit some texts and adding content based on an original template. I downloaded all the files from a server, but couldn't find any files that contained the text I wanted to edit. </p>

<ol>
<li><p>How could I use the text search keyword in all those files: PHP &amp; JS without opening them one by one to find it as it seems to having too many files related with one simple website?</p></li>
<li><p>What is the best way to check whether or not I am in need of the original files in order to finish this project?</p></li>
</ol>
