Composer is an application-level package manager for the PHP programming language that provides a standard format for managing dependencies of PHP software and required libraries. It manages them on a per-project basis, installing them in a directory (e.g. vendor) inside your project.
Unlike compiled languages, in PHP if you make a mistake, the program will crash when the line of code with the mistake is executed. When testing a PHP application, whether manually or automatically, developers spend a lot of their time discovering mistakes that wouldn’t even compile in other languages, leaving less time for testing actual business logic.
Having a public site with forms can become a headache if we do not prevent spam bots from submitting fake information to our application. Luckily, there is a simple and effective way to defer some of the spam using honeypots. This technique is based on creating a hidden input field that should be left empty by the real users of the application but will most likely be filled out by spam bots.
Social login is now an essential part of any site which performs user authentication. It does not need to replace the standard form based authentication, quite the contrary, social login complements it. Login with social accounts is a straightforward process and it saves the users a lot of time, as they won't need to fill the whole form. They just sign up with their social account and they can log into the website with just a few clicks.
PurgeCSS is a tool to remove unused CSS. When you are building a website, you might decide to use a CSS framework like TailwindCSS, Bootstrap, MaterializeCSS, Foundation, etc... You will only use a small set of the framework but a lot of unused CSS styles will be included.
Historically a lot of software has used incrementing numbers to represent the identifier of a particular piece of data. They can be auto-generated by many data stores, they are easy to read, efficient to store and naturally time ordered.
As time passes, applications become larger. They need more resources and usually distributed in different places. That may cause some errors generating concurrent numbers and coordination issues. Incremental numbers can also be the source of security problems and they may include implicit information about datasets volume. Modern software architectures also trend to decouple infrastructure layer and move ID generation logic to the domain core.
Composer is a tool for dependency management in PHP. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you.
Composer requires PHP 5.3.2+ to run. A few sensitive PHP settings and compile flags are also required, but when using the installer you will be warned about any incompatibilities.