(php,mysqli,phpmyadmin) Can I enter my data this way? : Please, I cant find the mistake but it doesn't work.  

Always shows "error de envio"(sending error) 
    
    ...or die("error de envio");


[Myphpadmin data][1] <- Link img.

My php code:

    $link =mysqli_connect("localhost","my_user","my_password","usuario")or die("
    <h2>NO se encuentra el servidor </h2>");

    $name=$_POST['name'];
    $pass=$_POST['pass'];
    $nick=$_POST['nick'];
    $email=$_POST['correo'];
    $raza=$_POST['raza'];

    $req =(strlen($nick)*strlen($pass)*strlen($email))or die("<h2>no se llenaron los datos </h2>");

    $contra=md5($pass);

    mysqli_query($link,"SELECT * FROM usuario");
    mysqli_query($link,"INSERT INTO `usuario`(`nombre`,`contrasena`,`usuario`,`email`,`raza`) VALUES('$name','$contra','$nick','$email','$raza')") or die("error de envio");
    echo"gracias por registrarse" 
    mysqli_close($link);

Can I enter my data this way?

Thanks for your help.


  [1]: https://i.stack.imgur.com/14KOF.png 