What are some potential pitfalls when using regular expressions in PHP for parsing data?

One potential pitfall when using regular expressions in PHP for parsing data is that they can be complex and difficult to debug, especially for beginners. To solve this issue, it's important to test and validate your regular expressions thoroughly before using them in production code. Additionally, using built-in PHP functions like `preg_match()` or `preg_replace()` can help simplify the process and make your code more readable. 

// Example of using preg_match() to parse data with regular expressions
$data = "Hello, my email is example@email.com";
$pattern = '/[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/';
if (preg_match($pattern, $data, $matches)) {
    echo "Email found: " . $matches[0];
} else {
    echo "No email found";
}

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