<?php

use Zend\File\ClassFileLocator;

$dir = 'zendframework/library/Zend/File';

$locator = new ClassFileLocator($dir);

foreach ($locator as $classFile) {
    echo $classFile->getFileName() . PHP_EOL;
}

ClassFileLocator.php
PhpClassFile.php
ExceptionInterface.php
InvalidArgumentException.php
RuntimeException.php
BadMethodCallException.php
Transfer.php
ExceptionInterface.php
InvalidArgumentException.php
PhpEnvironmentException.php
RuntimeException.php
BadMethodCallException.php
FilterPluginManager.php
Http.php
ValidatorPluginManager.php
AbstractAdapter.php

• Explode validator to validate a string of values
• A list of ZF2 serializer
• OOP version to create a SQL insert statement

PHP 7.3, Zend 3.0, Symfony 4.3, Laravel 5.8, PHPUnit 8.0, Doctrine 2.10