What resources or documentation should be consulted to better understand and troubleshoot issues related to regular expressions in PHP?

Regular expressions in PHP can be tricky to master, but there are several resources available to help troubleshoot any issues you may encounter. The PHP manual provides detailed documentation on regular expressions and their functions, while websites like regex101.com allow you to test and debug your regular expressions in real-time. Additionally, online forums and communities like Stack Overflow can be valuable resources for getting help from experienced developers.

// Example code snippet demonstrating how to use regular expressions in PHP
$string = "Hello, World!";
$pattern = "/\bHello\b/";
if (preg_match($pattern, $string)) {
    echo "Match found!";
} else {
    echo "No match found.";
}