How to implement maintenance mode in custom php cms?
<p>Ello,</p>

<p>I would like to make maintenance mode for my website, because i daily update files from development to production and website in that time website slows down or errors occurring for user at that time.</p>

<p>What the procedure for this kind of work. I would also like to allow users with right permissions to still login in website and use it normally (for testing purposes of implemented new features).</p>

<p>Thanks. </p>
