?> <?php class EmailValidator // Validate email format public static function validateFormat($email) return filter_var($email, FILTER_VALIDATE_EMAIL) !== false;
$domain = substr(strrchr($email, "@"), 1); if (!checkdnsrr($domain, 'MX') && !checkdnsrr($domain, 'A')) echo json_encode(['valid' => false, 'message' => 'Domain does not exist']); exit; check email valid php
<!DOCTYPE html> <html> <head> <title>Email Validation</title> </head> <body> <form method="POST" action=""> <label for="email">Email:</label> <input type="email" name="email" id="email" value="<?php echo htmlspecialchars($email); ?>" required> FILTER_VALIDATE_EMAIL) !== false
return true;
<?php if ($error): ?> <p style="color: red;"><?php echo $error; ?></p> <?php endif; ?> <?php if ($success): ?> <p style="color: green;"><?php echo $success; ?></p> <?php endif; ?> <button type="submit">Validate Email</button> </form> </body> </html> <?php // validate-ajax.php header('Content-Type: application/json'); $email = $_GET['email'] ?? ''; $domain = substr(strrchr($email
// Usage examples $testEmails = [ 'user@example.com', 'invalid-email', 'user@gmail.com', 'user@mailinator.com' ];
// Usage $email = "user@example.com"; if (isValidEmail($email)) echo "Valid email address!"; else echo "Invalid email address!";