What are the potential pitfalls of using regular expressions (regex) for extracting specific values from text input in PHP?

One potential pitfall of using regular expressions for extracting specific values from text input in PHP is that regex can be complex and difficult to maintain, especially for more intricate patterns. To solve this issue, consider using PHP's built-in functions like `preg_match()` or `preg_match_all()` which provide a simpler and more readable way to extract values from text input. 

$text = "This is a sample text with a phone number 123-456-7890 and an email address example@email.com";

// Extract phone number using preg_match()
if (preg_match('/\b\d{3}-\d{3}-\d{4}\b/', $text, $matches)) {
    $phone_number = $matches[0];
    echo "Phone number: $phone_number";
}

// Extract email address using preg_match()
if (preg_match('/\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b/', $text, $matches)) {
    $email = $matches[0];
    echo "Email address: $email";
}

Keywords

regex text input PHP extraction pitfalls

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