DB_Connect

<?php
// Used to Login & Register users
ob_start();
session_start();

//---------------------------------
 //Error Array

    $errors = array();
    $fname = "";
    $lname = "";
    $userName = "";

// To Connect To The Server - Used MySQLi

$db_connect = mysqli_connect('localhost','root','mariadb123','users');

If($db_connect){
    echo "sucess";
}

else  {
    echo "Failed";
}

if(isset($_POST['register'])){

    $fName = mysqli_real_escape_string($db_connect,$_POST['FirstName']);
    $lName = mysqli_real_escape_string($db_connect,$_POST['LastName']);
    $userName = mysqli_real_escape_string($db_connect,$_POST['UserName']);
    $pass_1 = mysqli_real_escape_string($db_connect,$_POST['password_1']);
    $pass_2 = mysqli_real_escape_string($db_connect,$_POST['password_2']);
    $userEmail = mysqli_real_escape_string($db_connect,$_POST['Email']);


    // Check if fields are filled.

    if(empty($fName)){
        array_push($errors,"First Name is required.");
    }

    if(empty($lName)){
        array_push($errors,"Last Name is required.");
    }

    if(empty($userName)){
        array_push($errors,"User Name is required.");
    }

    if(empty($userEmail)){
        array_push($errors,"Email is required.");
    }

    if(empty($pass_1)){
        array_push($errors,"Password is required.");
    }

    if(empty($pass_2)){
        array_push($errors,"Please Confirm the passwords.");
    }

    if($pass_1 != $pass_2){
        array_push($errors,"Passwords do not match. Please try again.");
    }

    if(count($errors)==0){

        $password = password_hash($pass_1,PASSWORD_DEFAULT);

        $query = "INSERT INTO user_t(user_FName,user_LName,user_userName,user_Email,user_Password) VALUES ('$fName','$lName','$userName','$userEmail','$password')";

        $result = mysqli_query($db_connect,$query);

        $query = "SELECT user_ID from user_t WHERE user_Email='$userEmail';";
        $result = mysqli_query($db_connect,$query);
        $row = mysqli_fetch_array($result, MYSQLI_BOTH);
        mkdir("../../users/$row[0]", 0777, true);

        $_SESSION['userName'] = $userName;
        //header('location:../index.php');
    }

}

if(isset($_POST['login'])){

$email_or_userName = mysqli_real_escape_string($db_connect,$_POST['email']);
$pass =  mysqli_real_escape_string($db_connect,$_POST['password']);


 // checks with userName or Email
$loginQuery = "SELECT * FROM user_t WHERE user_Email='$email_or_userName' OR user_userName = '$email_or_userName'";
$result = mysqli_query($db_connect,$loginQuery); // Inserts Query into The Database and returns mysqli_result Object.
$userRow = mysqli_fetch_array($result, MYSQLI_BOTH); // Stores the object into an array;
$password = password_verify($pass,$userRow["user_Password"]); // Verifies the password

if(($userRow["user_Email"]==$email_or_userName || $userRow["user_userName"]==$email_or_userName) && $userRow["user_Password"]==$password ){

    $_SESSION['user_ID'] = $userRow["user_ID"]; // Sets user_ID session Variable to ID of the logged in User.
    header("Location:../../index.html");

}
}
/*
if(isset($_POST['post_ad'])){

    $itemTitle = mysqli_real_escape_string($db_connect,$_POST['item_Title']);
    $itemPrice = mysqli_real_escape_string($db_connect,$_POST['FirstName']);
    $itemCategory = mysqli_real_escape_string($db_connect,$_POST['FirstName']);
    $itemLocation = mysqli_real_escape_string($db_connect,$_POST['FirstName']);
    $itemDescription = mysqli_real_escape_string($db_connect,$_POST['FirstName']);

    // Image Upload And Checking

    $image

}

*/
?>