When styling websites or PWAs with CSS, you should analyze how CSS resources will affect performance. In this tutorial, we’ll use various tools and related techniques to help build a better PWA by focusing on CSS performance. Specifically, we’ll remove the unused CSS, inline the
We've previously shown you how to get a working local installation of Apache on your Windows PC. In this article, we'll show how to install PHP 5 as an Apache 2.2 module. Why PHP? PHP remains the most widespread and popular server-side programming language on the web.
On top of the infrastructure of the internet --- or the physical network layers --- sits the Internet Protocol, as part of the TCP/IP, or transport layer. It's the fabric underlying all or most of our internet communications. A higher level protocol layer that we use
Over a series of articles, we've been building a sample application --- a multi-image gallery blog --- for performance benchmarking and optimizations. At this point, our application serves the same image regardless of the resolution and screen size it's being served in. In this tutorial,
Varnish Cache is an HTTP accelerator and reverse proxy developed by Danish consultant and FreeBSD core developer Poul-Henning Kamp, along with other developers at Norwegian Linpro AS. It was released in 2006. According to Pingdom.com, a company focused on web performance, in 2012 Varnish was already
Chrome DevTools incorporates many sub-tools for debugging web applications on the client side --- like recording performance profiles and inspecting animations --- most of which you've likely been using since your early days of learning web development, mostly through the DevTools console. Let's look at some
Optimizing websites for speed is a craft, and each craft requires tools. The most-used website optimization tools are GTmetrix, YSlow and Pingdom Tools. GTmetrix is a rather advanced tool that offers a lot on its free tier, but it also offers premium tiers. If you sign
This article is part of a series on building a sample application --- a multi-image gallery blog --- for performance benchmarking and optimizations. (View the repo here.) As we can see in this report, our site's landing page loads very quickly and generally scores well, but
Content from one PHP file can be included into another PHP file before it gets executed at the server. in order to perform this operation, PHP provides two functions namely include() and require(). This is a way in which PHP allows the reusability of code.
The PHP date() function is used to format a date and/or a time. Syntax: date(format,timestamp); ParameterDescriptionformatRequired. Specifies the format of the timestamptimestampOptional. Specifies a timestamp. Default is the current date and timeEx: <?php echo "Today's date is :"; $today = date("d-m-Y"); echo $today; ?> Output: