存储获取和存储IP地址

Question

I currently have a function that stores a query that has been entered into a form. I am trying to save the IP address of the user that submits the form along with the input.

Currently this is the function:

 function userIP(){
    $ip = $_SERVER['REMOTE_ADDR'];     
    if($ip){
        if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
            $ip = $_SERVER['HTTP_CLIENT_IP'];
        } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];

        $ipis = ip2long($ip);
        }
        return $ip;
    }
    return false;
}

 public function __construct( $data = array() ) {
     if( isset( $data['text'] ) ) $this->text = stripslashes( strip_tags( $data['text'] ) );
     if( isset( $data['ipis'] ) ) $this->ipis = stripslashes( strip_tags( $data['ipis'] ) );
 }

 public function storeFormValues( $params ) {
    $this->__construct( $params ); 
 }


     public function store() {
    $correct = false;
        try {
            $con = new PDO( DB_DSN, DB_USERNAME, DB_PASSWORD );
            $con->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
            $sql = "INSERT INTO tbl(content, ip) VALUES(:text, :ipis)";

            $stmt = $con->prepare( $sql );
            $stmt->bindValue( "text", $this->text, PDO::PARAM_STR );
            $stmt->bindValue( "ipis", $this->ipis, PDO::PARAM_STR );
            $stmt->execute();
            return "Added";
        }catch( PDOException $e ) {
            return $e->getMessage();
        }
 }

}

However it currently only stores the "text" that was input and just adds NULL to the database for IP. The MYSQL for the IP row is set up as an unsigned INT 11. Any ideas on fixing the issue?

Answer 1

There is an error in your function returning the long value. You have placed the return statement in the elseif condition. Also, you are returning the actual $ip value as is.

function userIP(){
$ip = $_SERVER['REMOTE_ADDR'];   
if($ip){
    if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
        $ip = $_SERVER['HTTP_CLIENT_IP'];
    } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
        $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
    }
    $ipis = ip2long($ip);
    return $ipis;
}
return false;
}

Answer 2

使用字符串将IP存储在数据库中

Answer 3

Another possible option:

function userIP(){
  $ip = $_SERVER['REMOTE_ADDR'];     
  if( !$ip )
    return false;
  if( !empty( $_SERVER['HTTP_CLIENT_IP'] ) )
    $ip = $_SERVER['HTTP_CLIENT_IP'];
  if( !empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) )
    $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
  return sprintf( '%u' , ip2long( $ip ) );
}

After reading the PHP Manual on ip2long() I found something interesting about how it handles large integers on some systems.