cpanel - How to redirect to maintenance page exclude some ip addresses using htaccess?

Question

I want to redirect to all users to maintenance page. Exclude some developers ip address. for excluded ip address redirect to public_html/index.php

I have tried like this.

Options +FollowSymlinks
RewriteEngine on
RewriteCond %{REMOTE_ADDR} !=123.45.67.89
RewriteRule index.php$ /construction.php [R=301,L]

But its not working.

Answer 1

等待大神答复