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Php validar email por dns beta 0.1

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  1. # validar emails con dominios validos
  2. function validateDnsEmail( $emailRaw )  {
  3. 	# Sacamos espacios y saltos
  4. 	$emailNr = eregi_replace( "\n", "", $emailRaw );
  5. 	$emailNr = eregi_replace( "\r", "", $emailRaw );
  6. 	$email = eregi_replace( " +", "", $emailNr );
  7. 	$email = strtolower( $email );
  8. 	# Lo pasamos por una regex para validar el formato
  9. 	if( ! eregi( "^[a-z0-9]+([_\\.-][a-z0-9]+)*". "@([a-z0-9]+([\.-][a-z0-9]+))*$", $email ) ){
  10. 		# Si no es valido....
  11. 		$feedback = 0;#'Error: "' . $email . '" is not a valid e-mail ';
  12. 		return $feedback;
  13. 	}else{
  14. 		#Si esta ok, sacamos el dominio
  15. 		$item = explode( "@", $email );
  16. 		$domain = $item["1"];
  17. 		if ( ( gethostbyname( $domain ) == $domain ) ){
  18. 			if ( gethostbyname( "www." . $domain ) == "www." . $domain ){
  19. 				$feedback = 0;#'Error: "' . $domain . '" is most probably not a valid domain!';
  20. 				return $feedback;
  21. 	 		}
  22. 			#Es Valido
  23. 			$feedback = 1;
  24. 			return $feedback;
  25. 		}else{
  26. 			#valido
  27. 			$feedback = 1;
  28. 			return $feedback;
  29. 		}
  30. 	}
  31. }

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