Are there any best practices to follow when using regular expressions in PHP for email validation?

When using regular expressions in PHP for email validation, it is important to follow best practices to ensure accurate validation. One common best practice is to use a well-tested regular expression pattern that covers the majority of valid email formats. Additionally, it is recommended to use PHP's built-in filter_var function with the FILTER_VALIDATE_EMAIL flag for a more robust email validation solution. 

$email = "example@example.com";

if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
    echo "Valid email address";
} else {
    echo "Invalid email address";
}

Keywords

regular expressions PHP email validation validation best practices

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