<div>
not what I was thinking because I want historical values<br />
<br />
but you answered the question I wrote: which was update<br />
<br />
thanks
</div>


not what I was thinking because I want historical values

but you answered the question I wrote: which was update

thanks

<div>
<div class="content wysiwyg-content">
users have a title and body in their social networking website<br />
<br />
using php, pdo with mysql<br />
<br />
if they change their title and/or body &nbsp;then <br />
<br />
columns id,profile_id, timestamp, title, body. &nbsp;If body,title is different save a new title,body
</div>
</div>


users have a title and body in their social networking website

using php, pdo with mysql

if they change their title and/or body  then 

columns id,profile_id, timestamp, title, body.  If body,title is different save a new title,body

only insert if different than existing

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.