Tag: WordPress (Page 19 of 220)

Articles, tips, and resources for WordPress-based development.

On Functions and Must-Use Plugins

April 28, 2020 / Tom

I’ve been working on a small project, more of a web application than a site, that’s required the development of both a custom-theme and tightly coupled, but very specific functionality.

This is a very narrowly focused project (about which I’ll likely talk about at some point in the future) but in working on it, it’s forced me to get back into the theme development aspect of WordPress development a little bit.

No, I’m not doing any design – thankfully – but I am having to work on theme customizations from a functional perspective. In doing this, though, it’s had me revisit the required functions.php and some considerations I’ve never had before.

Furthermore, it’s caused me to look more deeply at the use of mu-plugins and ask when they are necessary and why I haven’t used them more in the past (or even when one would truly need to use them).

So I’m going to wax poetic about that a bit.

TL;DR
Functionality tied directly to the theme and WordPress core goes into functions.php. Domain-logic that required by the entire solution to work goes in a must-use plugin.

Deactivating WordPress Plugins with SQL

December 12, 2019 / Tom

If you inherit a WordPress codebase, regardless of the age of the project, there may be a lot of context that you don’t have as to why certain decisions were made or how things were implemented.

This may include the server, infrastructure used to help power the site or the app, and other contextual information about the environment in which it was running.

This type of information can be server-related information, PHP version, database type, information that’s actually stored in the database especially if you do a database import, and so on.

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Ideally, all of this is handed over but that’s not always the case. Anyway, say you attempt to start it up and then when you attempt to start up the application, not only does it not work but it either shows a white screen or displays a message about technical problems with your installation.

How To Fix the Referenced PHPCompatibility Sniff Error

December 5, 2019 / Tom

There are a lot of nice packages that we can use in our PHP-based projects and if you’re using Composer or GrumPHP, PHPCompatibility is one that I recommend including your projects especially if you’re writing code for something that’s going to run across multiple versions of PHP (that is, on hosts that offer different versions).

This is a set of sniffs for PHP CodeSniffer that checks for PHP cross-version compatibility. It will allow you to analyse your code for compatibility with higher and lower versions of PHP.
PHPCompatibility Repository

This is something that be installed within composer and it’s something that I recommend for people writing code for WordPress because of how much variation exists within our hosts.

Occasionally, though, you may see a problem like this:

And if you run $ phpcs -i you may get a message that’s unclear.

Introducing Remove Empty Shortcodes

December 3, 2019 / Tom

Last week, I discussed everything that went my decision on retiring site memberships. For those who were members (or even read the initial idea), you may recall that I was using Restrict Content Pro to power the site.

When retiring the memberships, I wanted to make sure I was able to maintain the integrity of all of the posts that I’d published simply without the shortcode that comes with RCP.

What started off as a simple plugin to remove the RCP shortcode turned into a plugin to remove all empty shortcodes. I’m opting to open the plugin’s repository so anyone can access it (or contribute issues, code, or create their own fork from it).

At the time of this writing, the plugin is at 0.4.0 so there’s not much to expect. But I enjoy reading the what and why other developers do in their projects, so I’m going to do so with Remove Empty Shortcodes.

You Should Be Using PHP Filtering Functions, Part 2

November 19, 2019 / Tom

In the previous post, I talked about the reasons using PHP filtering functions is more useful rather than not.

In short, doing so helps to provide a level of validation that’s built into the language so that we don’t have to re-write something. Naturally, there are caveats.

For example, if you’re having to validate a value that is of non-Latin characters, then you’re going to go have to go it alone and implement validation with perhaps a regular expression.

But if you’re using email addresses, URLs, numbers, IP addresses, and so many more things, then you’re in a good position to use something that already exists.

Anyway, all of the above is still about filtering variables. What about inputs, though? That is, those that come from $_POST or $_GET. It’s possible to use a similar strategy with a different function and different filter set.

But if you understand the basics presented in the last post, then this post will not be very different.