Forms, forms, forms... This is essential part of the Web and probably main reason why servers-side technology like Perl, PHP appeared. But things didn't change much from the time I wrote my first Form handler using PHP3.0.18. In this post I want to share some of my tricks of handling forms. Yes, it requires JavaScript enabled, which, truly speaking, is already a must have for 99.99% of sites for a long time. Big advantages is that it really simplifies things on client and server side. Welcome reading... Continue reading

To be clear what I am talking about see the image below. It has nice Settings link which leads to plugin settings  from plugin list. Why I think this is important? Usually plugin creates new submenu in Settings, but sometimes it uses different name and it is not easy to find one. In case 20+ plugins are installed, which is a real case, it is not easy to remember where all these settings are stored. I consider Settings link  as a must have thing when developing plugin and its pretty easy to add it, see below Continue reading

You may have heard that current IP address space (4 billion of IPs)  is already fully assigned and there is no free ip addresses left. There is no big panic since ISP and hosting companies have some internal IP reserve. But this definitely leads to quicker deployment of IPv6 protocol. The main issue is: IPv6 must be supported on both ends of connection: user-end and server-end. It is a classic chicken and egg problem, top few users use IPv6 ->  no IPv6 services exists and no services support IPv6 means, why should clients switch to it? Since there is no IPv6 alternative, service owners must do a big first step and some of them did. Google, Amazon, Rackspace and many others added IPv6 as alternative to IPv4. Is you site or blog ready to be accessible via IPv6? I think its time to think about it. I did a switch of my WordPress based blog hosted on Rackspace and here is the story... Continue reading

I have some servers on Rackspace cloud platform. Having full control over OS allows to make many useful testing, even if its virtualized  Recently while doing some server hardening work I discovered not an obviously thing with iptables. In fact some of my firewall rules where completely ignored!! I am not the iptables newbie and was very surprised by such behavior. Find the story below... Continue reading

CDN is abbreviation for Content Delivery Network. Hard to believe that like 5 years ago it sounded like a rocket science in WWW. Only huge sites were able to afford it and configure it right. Now things have completely changed and today's question is: Why you still do not use CDN for your site or blog? Because of the W3 Total Cache plugin, setting up a CDN for WordPress based site is criminally simple. Thats another one cent in my love WordPress topic. If your website receives more than a few hundred visitors a month, or if your site makes visitors download a lot of data (images, self-hosted javascripts, flash files, etc.), this is a great setup. There’s also an SEO benefit in using a CDN…at least indirectly. Faster sites get more traffic from Google and Bing than slower sites. By making your site faster, you increase the likelihood Google will refer people to your site. Continue reading