How important is it to balance security measures with user experience when implementing email validation in PHP applications?

It is crucial to balance security measures with user experience when implementing email validation in PHP applications. While security measures are essential to prevent malicious inputs, overly strict validation can frustrate users and lead to a poor user experience. It is important to find a middle ground where the validation is robust enough to prevent common security vulnerabilities but also allows legitimate users to input their email addresses without unnecessary restrictions. 

$email = $_POST['email'];

if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
    // Valid email address, proceed with the application logic
} else {
    // Invalid email address, display an error message to the user
}

Keywords

security measures user experience email validation PHP applications implementation

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