How can one distinguish between good, bad, and outdated PHP tutorials and resources when learning OOP?

When looking for PHP tutorials and resources for learning Object-Oriented Programming (OOP), one can distinguish between good, bad, and outdated ones by considering the following factors: 1. **Relevance**: Ensure that the tutorial or resource covers modern PHP practices and OOP concepts that are still widely used. 2. **Clarity**: Look for tutorials that explain concepts clearly and provide practical examples to help you understand and apply OOP principles effectively. 3. **Community Feedback**: Check for reviews, ratings, and comments from other learners to gauge the quality and effectiveness of the tutorial or resource.

// Example PHP code snippet for checking if a tutorial is outdated based on its publication date
$currentYear = date("Y");
$tutorialPublicationYear = 2015; // Assuming the tutorial was published in 2015

if ($tutorialPublicationYear < $currentYear - 2) {
    echo "This tutorial may be outdated. Consider looking for more recent resources.";
} else {
    echo "This tutorial is relatively recent and may still be relevant.";
}