Are there any common pitfalls to avoid when using regex to filter email addresses in PHP?

One common pitfall to avoid when using regex to filter email addresses in PHP is not accounting for all valid email address formats. It's important to use a comprehensive regex pattern that covers various valid email address structures to ensure accurate filtering. 

$email = "example@example.com";

if (preg_match('/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/', $email)) {
    echo "Valid email address";
} else {
    echo "Invalid email address";
}

Keywords

regex email addresses PHP filter pitfalls

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