php

Creating SEO Friendly URLs in PHP with url_slug()

I’m talking about slugs, SEO friendly URLs, clean URLs, permalinks, etc. You know, those nice-looking URLs that are easy to read (for humans and search engines). The keywords that show up in your URLs plan an important role in how well your site ranks in search results. That’s one reason why it’s common for blogging systems like WordPress to create permalinks from post titles. I’ve had a function in my toolbox for doing this sort of thing for a while now. While working on an article management system the other day, though, I decided to take another look at it […]

mb_str_replace — The Missing PHP Function

I usually try to build UTF-8 support into the sites and web applications I build. In PHP land that usually means using the multibyte string extension mbstring. A number of people have noticed, though, that there are some often used PHP string functions with no mbstring equivalent. One of those functions is str_replace(). So for anyone looking for a mb_str_replace() function the one below should serve you nicely. It should work in exactly the same manner as str_replace().

A Better HAProxy Health Check For Dynamic Websites

Nobody wants their website to go down, or worse, for users to notice the site is down. Because of this most larger websites will run on multiple servers to provide some level of high availability. In a multi-server architecture there is typically a load balancer (or cluster of load balancers) to distribute the load among a pool of web servers. When a server goes down it’s taken out of the pool until it is once again ready to handle requests. HAProxy (a software load balancer) has the ability to perform this task by doing periodic health checks on all the […]

.htaccess File Causes 500 Internal Server Error on Network Solutions

How’s that for a search engine friendly title, eh? This is just a quick note for anyone who has to deal with Network Solutions hosting (for clients or otherwise). Apperantly Network Solutions doesn’t run PHP with Apache’s mod_php, but rather as a CGI application. That means if you try to put PHP configuration directives in a .htaccess file it will cause a 500 Internal Server Error. My helpful reference: Because Network Solutions Sucks. You have been warned.

Auto-Linking URLs with PHP

A week or so ago I was working on a bug in the auto-linking code for Laconica, the software that powers Indenti.ca. Squashing that particular bug wasn’t too hard, but I wanted to take the functionality a step further (closer to the calibre of Gmail) and it turns out, writing robust auto-linking code is more difficult than it initially seems. So I played with it a little at a time here and there, testing as many edge cases as I could think of. The result is a function that’s more robust than most URL auto-linking code I’ve come across. I […]