Are there best practices for excluding special characters like quotes and dollar signs in email validation regex in PHP?

When validating email addresses in PHP using regex, it is important to exclude special characters like quotes and dollar signs to ensure the email address is in a valid format. One way to achieve this is by using a regex pattern that allows only alphanumeric characters, periods, underscores, and hyphens before the "@" symbol. This helps prevent any potential security vulnerabilities or errors in the validation process. 

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

Keywords

PHP email validation regex special characters exclusion

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