auth.php

<?php
session_start();
include("connectbd.php");

$_SESSION["login"];
$_SESSION["password"];

$login=$_POST["login"];
$password=$_POST["password"];
$email=$_POST["email"];

$aselect="SELECT * FROM User WHERE ('login'='$login' AND 'password'='$password')";
$aresult=mysqli_query($connect, $aselect)or die(mysqli_error($connect));

 function ver(){
    if(empty($_SESSION["login"]&&$_SESSION["password"])){
    authoriz();
     reg();
 echo"<form name=\"aitorization\" action=\"#\" method=\"POST\">".
"<input type=\"text\" name=\"login\">".
"<input type=\"password\" name=\"password\">".
"<input type=\"submit\" name=\"in\" value=\"Вход\">".
"<input type=\"submit\" name=\"reg\" value=\"Регистрация\">".
"</form>";
    }else{
    echo $_SESSION["login"];
     out();
     echo"<form name=\"out\" action=\"#\" method=\"POST\">"."<input type=\"submit\" name=\"out\" value=\"выход\">"."</form>";
    }
    }

 function authoriz(){
 if(isset($_POST["in"])){
    if(!empty($_POST['login']&&$_POST['password'])){
    var_dump($_POST);
    if(mysqli_num_rows($aresult)==1){
    $_SESSION["login"]=$_POST["login"] ;
     $_SESSION["password"]=$_POST["password"];
     echo"hh";
     }
     }
     }
    }

 function reg(){
    if($_POST["reg"]){
    header("Location:../reg.php");
 }
}

 function out(){
 if($_POST["out"]){
    session_unset();
    }
 }
 ver();
?>