Imprimir Alert PHP

Question

Good staff as I can print the contents of something php in a div for example : I have a login area , if the user data is wrong I want to print a div with Alert (with bootstrap) on the same page. I have this validation in php but I want you to show me in a div

follows codes

login

         <form class="login-form" method="POST" action="pg/logar.php">
  <input required type="text" name="f_usuario" placeholder="Usuario"/>
  <input required type="password" name="f_senha" placeholder="Senha"/>
  <button type="submit">Logar</button>

log in.php

     if($linhas > 0){
    $_SESSION['usuario'] = $usuario;
    $_SESSION['senha'] = $senha;
    header("Location:../logado.php");
   }else{
    echo "Dados Digitados Incorretos";
   }

Answer 1

Try it like this:

echo '<div id="alert">Dados Digitados Incorretos</div>';