How do I make a user not enter a route without first going through the start?
example:
public_html/proyecto/pagina_contenido.html
I need that before I enter that page I am obliged to go through:
public_html/proyecto/inicio.html
for eventually from inicio.html to be redirected to the page with content.
To control access, it is best to manage access through sessions.
in your file pagina_contenido.php you search for the session variable, if it has no value, you redirect to inicio.php with the appropriate heading.
home.php
//Primera línea siempre
session_start();
//en algún momento guardas la variable de sesión
$_SESSION['registrado'] = true;
pagina_contenido.php
if(!$_SESSION['registrado']){
//encabezado de redirección
header("location:inicio.php");
die;
}