Posts tagged #php

Private Constructors

by Liam Hammett · 5 minute read · #php #oop

Private constructors are a pattern found in object-oriented programming languages that prevents the class from being instantiated, except by itself.

The first time I saw this pattern in my programming career, I was confused. It wasn’t immediately apparent why such a feature would ever be beneficial in the real world. How are you meant to use the class if it can’t be instantiated? Why even bother defining a constructor at all if it can’t be called?

It turns out there are a handful of uses that private constructors can lend themselves to. Here I’m going to go over a few purposes they serve. The examples are in PHP but should transfer to any language that supports this feature.

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My PHP Wishlist

by Liam Hammett · 10 minute read · #php #wishlist

Back when I started using PHP properly in the early 5.0 days, it felt like the language was pretty basic. Other languages were making leaps and bounds every year, and as time went on, PHP seemed to have stagnated. The language wasn’t bad, but it wasn’t as good as it could’ve been.

That all changed this decade. PHP has come an awful long way in the last few years and is once again proving that it’s got what it takes to be a programming language people should take seriously, even outside the web. I’m hugely happy with the direction PHP has taken and the amazing work of the core contributors and the entire ecosystem.

That said, there are a handful of things I would love to see PHP implement at some point in the future. These are a few things that I would’ve liked to be able to use every now and again when the circumstances for them come up.

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A Look At PHP's isset()

by Liam Hammett · 9 minute read · #php

isset() is one of the most important tools at your disposal to validate data in PHP. Like the name implies, it is designed to verify if a variable given to it is set, returning a boolean value based on the result.

However, it has some quirks and behaviours that are very much worth knowing as they can easily catch out even experienced developers.

Let’s take a look through how it behaves and what’s so special about it. Even if you’re a veteran PHP developer, hopefully, you’ll pick up something new here.

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PHP Wishlist: Typing

by Liam Hammett · 10 minute read · #php #wishlist

PHP is a loosely typed language. It doesn’t care what types you throw around. Unless you want it to care.

The language has come a long way in the last several years to bring in a robust type system, allowing developers to enforce types in both function parameters and what a function’s return value is.

For everything else, there’s docblocks, ugly sanitisation and assertion code, and crossing your fingers to hope your function’s API holds up in practice.

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Catching an exit(); in PHP

by Liam Hammett · 1 minute read · #php

What do you do when something goes wrong in your PHP application? Probably throwing an exception, so it can be caught at a higher level and handled appropriately.

What happens when instead of throwing an exception, an exit(); is executed? Can you catch it?

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Bitmask Constant Arguments in PHP

by Liam Hammett · 6 minute read · #php

PHP has a handful of core functions that can accept boolean arguments in the form of constants that have a binary value.

These can be combined together in a single function argument, essentially passing multiple boolean flags in a very compact manner.

They work a bit differently to how most people implement options in their userland functions, so let’s take a look at how they work.

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Throttle Simultaneous API Requests with Laravel

by Liam Hammett · 2 minute read · #open-source #php #laravel

Laravel comes with a handy ThrottleRequests middleware out-of-the-box that blocks users of an API from being able to send more than a particular amount of requests within a defined amount of time.

This is extremely useful for preventing an API from being abused by spammed requests, but isn’t suitable for every use case.

What about an API call that takes a lot of limited processing power, or performs an action that simply can’t be running twice at the same time?

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PHP Shareable Social Media Links

by Liam Hammett · 2 minute read · #open-source #php

I recently had the need to generate various “shareable” links to help share a particular URL to different social media platforms. The problem is that every platform requires information in a slightly different way.

Lo and behold, just a few days later, Dennis Smink shared their method of doing so in their article “Laravel Shareable Trait” that covers the few biggest platforms.

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PHP Function Chaining with Pipes

by Liam Hammett · 11 minute read · #php

Back in December 2016, freelance developer Sebastiaan Luca wrote a post on their blog inspired by an RFC proposal for PHP core about chaining functions, and here I am going to be responding to that blog post.

I highly recommend reading the aforementioned post and RFC to get an understanding of what function piping is as they do an amazing job at explaining the benefits it brings.

In short; it’s syntactic sugar to help make code more readable.

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