What are some best practices for beginners looking to learn regular expressions in PHP?

Regular expressions can be a powerful tool for pattern matching and text manipulation in PHP. For beginners looking to learn regular expressions, it's important to start with simple patterns and gradually increase complexity. It's also helpful to use online resources and tools like regex101.com to test and debug your regular expressions.

// Example code snippet for beginners learning regular expressions in PHP

// Using preg_match to check if a string contains a specific pattern
$string = "Hello, World!";
$pattern = "/Hello/";

if (preg_match($pattern, $string)) {
    echo "Pattern found in the string.";
} else {
    echo "Pattern not found in the string.";
}