PHP - Conectar Base de Datos a php

<?php

$CONserver = "localhost";

$CONuser = "root";

$CONpass = "";

$CONdb = "peliculas";

$conexion = new mysqli($CONserver,$CONuser,$CONpass,$CONdb);

if($conexion->connect_errno) {

	die("La Conexion Ha Fallado");

}

<?php

require ("configpelis/configpelis.php");

?>

<?php

$sql="SELECT nombre_pelicula from peliculas WHERE id= '' ";

$result=mysqli_query($conexion,$sql);

$sql="SELECT id_peliculas from peliculas";

$result=mysqli_query($conexion,$sql);

while($mostrar=mysqli_fetch_array($result)){

?>

<tr>

<td><a href="perfildepelicula.php?id=<?php echo $mostrar['id_peliculas']; ?>"><?php echo $mostrar ['']; ?></a></td>

</a>

<?php

}

 ?>

</tr>

</table>

<?php

require ("configpelis/configpelis.php");

$sql="SELECT id_peliculas, nombre_pelicula FROM peliculas";

$result=mysqli_query($conexion,$sql);

?>

<table>

    <?php while($mostrar=mysqli_fetch_array($result)){ ?>

        <tr>

            <td>

                <a href="perfildepelicula.php?id=<?= $mostrar['id_peliculas']; ?>"> <?= $mostrar ['nombre_pelicula']; ?> </a>

            </td>

        </tr>

    <?php } ?>

</table>

<?php

require ("configpelis/configpelis.php");

$id = $_GET['id'];

$sql = "SELECT * FROM peliculas WHERE id = {$id}";

$result=mysqli_query($conexion,$sql);

$peliculas = mysqli_fetch_array($result);

echo "Pelicula: " . $peliculas['nombre_pelicula'] . "<br>";

echo "Género: " . $peliculas['genero'] . "<br>";

echo "Descripción: " . $peliculas['descripcion'] . "<br>";