What are the best practices for integrating new libraries into existing PHP applications?

When integrating new libraries into existing PHP applications, it is important to follow best practices to ensure smooth integration and compatibility. One key practice is to carefully review the documentation of the library to understand its requirements and usage. Additionally, it is recommended to create a separate directory for the library files and include them using PHP's require or include statements. Finally, testing the integration thoroughly before deploying it to production is crucial to avoid any unforeseen issues.

// Example of integrating a new library into an existing PHP application

// Step 1: Download the library and place it in a separate directory
require_once 'path/to/library/vendor/autoload.php';

// Step 2: Use the library in your code
use LibraryNamespace\LibraryClass;

$libraryObject = new LibraryClass();
$libraryObject->doSomething();