具有HTML标签的字符串中的可变PHP

Question

I need pass this string to the HTML. I have this now:

  if(empty($_SESSION['usuario'])){
     $html = '<form class="form-inline formulario5" action="datos.php" enctype="multipart/form-data" method="post">
        <div class="form-group">
            <label for="user">Usuario</label>
            <input type="text" class="form-control" id="user" placeholder="" name="user"/>
        </div>
        <div class="form-group">
            <label for="password">Contraseña</label>
            <input type="password" class="form-control" id="password" placeholder="" name="password"/>
        </div>
        <button type="submit" class="btn btn-success">Log-In</button>
        </form>';
  }else{
        $html = '<h3><?$_SESSION['usuario']?></h3>';
  }

To this HTML:

<div class="container">
    <h1>Producto</h1>
    <h2 class="absorver">App</h2>
    <?echo $html?>
    <hr />
</div>

The problem is that i can´t pass the $html with the $_SESSION.

Answer 1

try this:

 if(empty($_SESSION['usuario'])){
 $html = '<form class="form-inline formulario5" action="datos.php" enctype="multipart/form-data" method="post">
    <div class="form-group">
        <label for="user">Usuario</label>
        <input type="text" class="form-control" id="user" placeholder="" name="user"/>
    </div>
    <div class="form-group">
        <label for="password">Contraseña</label>
        <input type="password" class="form-control" id="password" placeholder="" name="password"/>
    </div>
    <button type="submit" class="btn btn-success">Log-In</button>
    </form>';
}
else
{
    $sess = $_SESSION['usuario'];
    $html = "<h3>". $sess . "</h3>";
}