It uses Ajax to Show Messages using jQuery & Thickbox. Both comes with Wordpress no additional Javascript required…

If you would like to Test this version for me, please feel free to Download from link bellow and give me your feedback…

Download: http://wordpress.org/extend/plugins/content-warning/

New & updated version WP-DOOR coming soon.

WP-DOOR will get consents before allowing users to view contents, this make wordpress safer for mature contents and other contents where readers should be advised legally.

Current Beta version is available to those who can’t wait from wordpress.org

Current Version 0.2:
http://wordpress.org/extend/plugins/wp-door/ 

Installing Current Version 0.2

Okey, I know there we many people struggle to get this plug-in working. I hope this Step-by-step guide will help resolve this issue… If any of you need any help after following this instructions, Please do contact me via Email contact@rjeevan.com.

NOTE: Do not Activate the plugin until you finish this instructions and also Checked Check list listed at Bottom of this article.

Uploading

Files & Folders: Once downloaded, please extract the files and you should have Folders & Files as Follow:

Upload this, wp-door [FOLDER] to your blog/wp-content/plugins/
* All wp-door contents should go under plugins/wp-door/*[door-options.php, door.php, Readme.txt, wp-door.php]

Now, You need to upload the door.php file to your blog/door.php.
* By default, This is where all users will be redirected. It’s important to have this door.php File in your blog ROOT folder with other wordpress files. otherwise, wordpress and this plug-in will keep redirect for 404 error pages and will end in infinite loops.

After uploading, Files structure should be look alike:

blog/
        -door.php
blog/wp-content/plugins/wp-door/
                                                -wp-door.php 
                                                -door-options.php
                                                -door.php (This is the file you need to copy to root folder as well)
                                                -Readme.txt

 Activating & Settings

Okey, If you are confident you did everything right and there is a file called door.php IN your ROOT folder with other wordpress files than go a head and activate the plugin.

Once activated, Go to Settings > Door Options to Get Door settings page.

It should looks alike:

Your settings should be as followed:

Redirect URL: this is where users will be Redirected when users try to access your Site! As you can see when plug-in activated, It will try and Pickup your Default blog URL and add /door.php to it! If you decide to change the name door.php; You should update the correct URL in this settings…

Cookie Expire in: it’s asking cookies lifetime in seconds. If you want t ask users everytime they visit your site (Once per session) you may enter -1 as value or if you want user to only agree once and don’t have to go through this again when they visit next time, you may enter 0 or if you want to set a timeframe like 1week or day month each. calculate appropriate value and enter so.

Bot List (One per line): Your site may be visited by many search engine bots like google, yahoo and each. they all have a unique agent ID, if you know of any new once, please add them here (one per line). All these bot agents will have exception so they don’t have to go through the redirect process… 

Well that pretty much all to the installing ad settings part of the Installation and Plug-in.

door.php settings

Editing door.php file, Of cause everyone want to Edit this page to change warning message and each. When developing this plug-in, I didn’t expect to change the Button Value; hence it’s programmed (PHP) to accept and create cookie when it finds a “enter” word in Submit button’s value. But if a user changes it to some other language or word without “enter” in value, System will keep on reloading on same page.

I’m unable to update this file in wordpress SVN so here i attached a link to PHP file. Please do copy all this files codes to your existing door.php and make necessary changes where needed.

New Door.php File:
Door.php

This new files PHP code is changed to check which button pressed instead of search through clicked button value(btnEnter :: This value is usually the Name of the Button).