Tag: php

CDN - you keep seeing the acronym. Maybe in URLs, maybe on landing pages, but it never quite clicked - what are Content Delivery Networks, what do they do exactly? We'll explain in this overview article, and demonstrate on two popular ones in followup posts. CDN Basics A CDN is a network of computers that delivers content. More specifically, it's a bunch of servers geographically positioned between the origin server of some web content, and the user requesting it, all with the purpose of delivering the content faster by reducing latency. This is their primary purpose. These geographically closer servers, also called PoPs or Points of Presence, also cache the cacheable content which removes a lot of the load from the origin server. There are different types of CDNs offering different kinds...

Without a degree, your best chances of getting work is with a small business. Over 80% of small businesses use PHP to power their websites. So that makes PHP the #1 choice for those with no degrees. WordPress is also widely used by small business, and WordPress is created with PHP, some JavaScript, HTML5 and CSS3. Together, these coding languages are part of what is called the ‘web stack’. Learn the web stack and you will open up MANY job opportunities. PHP is old and sucks – no? LOL! No! Old PHP from the 1990’s wasn’t very good, but much has changed since PHP4. Today PHP is at version 7 and it has all the ability and security as any of the other mainstream languages including: JavaScript Python Java C# Ruby … So don’t let uninformed nerds convince you that somehow PHP has problems. It do...

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 on top of this is the application layer. On this level, various applications use different protocols to connect and transfer information. We have SMTP, POP3, and IMAP for sending and receiving emails, IRC and XMPP for chatting, SSH for remote sever access, and so on. The best-known protocol among these, which has become synonymous with the use of the internet, is HTTP (hypertext transfer protocol). This is what we use to access websites every day. It was devised by Tim Berners-Lee at CERN as early as 1989. The specification fo...

This article was created in partnership with Ktree. Thank you for supporting the partners who make SitePoint possible. In this article are looking at how Magento cookies can create issues with the login functionality of both the customer-facing front-end and admin back-end, the reason it occurs and how it should be resolved. This is also known as the looping issue, as the screen redirects itself to the same screen, even though the username and password is correct. A script is provided at the end of the article which can help detect a few of the issues. Feel free to use and modify as per your needs. What is a Cookie? A cookie is a piece of text that a web server can store on a user's hard drive, and can also later retrieve it. Magento uses cookies in Cart & Backend Admin functionalities...