Integrating Clean code when mixing PHP and HTML [closed] - php

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I'm finding an organisation a major problem with mixing PHP and HTML, it just looks horrible, so i'm wondering if it's a viable option to create a set of object oriented methods such as this:
class MainOO {
public $Database;
public function __construct($Server,$User, $Password, $DB){
if ($this->Database = new mysqli($Server,$User,$Password,$DB)){
return true;
}
return false;
}
public function User_Login(){
$Get_Usr_Info = $this->Database->prepare("SELECT ID, Password, Salt FROM Users WHERE Username=?");
$Get_Usr_Info->bind_param('s',$_POST['username']);
$Get_Usr_Info->execute();
$Get_Usr_Info->store_result();
$User_Number = $Get_Usr_Info->num_rows;
$Get_Usr_Info->bind_result($UserID, $Stored_Password, $Stored_Salt);
$Get_Usr_Info->fetch();
$Get_Usr_Info->close();
if ($User_Number !== 1){
$Error = "Wrong Username Specified Or Password Is Incorrect";
header ("Location: index.php?Errors=".urlencode($Error));
exit;
}
// Continue with login script
}
public function Logout(){
if (session_status() !== PHP_SESSION_DISABLED){
session_destroy();
header ("Location: LoggedOut.php");
exit;
}
}
}
Then HTML side:
<?php
include "MainOO.php";
$MainOO = new MainOO("host","user","password","database");
?>
<div class="example">
<div class="example left">
<?php
$MainOO->User_Login();
?>
</div>
</div>
It's still mixing PHP & HTML, but it's making look a hell of a lot neater than having heaps of PHP in the middle of HTML.
I'm fully aware I could migrate over to a MVC Framework (which this topic is looking like) already setup, or even use a template engine such as smarty, but I want to avoid this as much as possible.. So is this a viable option to have neater PHP code within html?

Answer 1

You will probably want to use an isset() in the code too
e.g
<?= (isset($variable)) ? $variable : ''; ?>
e.g if variable isset then display it otherwise display nothing