<form method="post" action="php/access.php">
    <ul id='registryTable' style="list-style: none;text-align:center;" class="txt-center">
        <li><input id="signupUser" type="text" name="username" onchange="validateSignup('0')" placeholder="Username"></li>
        <li><input id="signupMail" type="text" name="email" onchange="validateSignup('0')" onchange="validateMail('signupMail')" placeholder="Email  (example@redover.com)"></li>
        <li><input id="password" type="password" name="password" onchange="validateSignup('0')" placeholder="Password "></li>
        <li><input id="repeatPassword" type="password" name="verPassword" class="margin-bottom-20" onchange="validateSignup('0')" placeholder="Repeat password"></li>
        <li style="max-width: 50%;margin: 0 auto;">
            <input type="button" id="btn-signup" name="registry" value="Access" style="cursor: pointer; width: 50%;float:left;margin-left: 5px;border: none;background-color: #3897f0;font-size: 17px;color: white;" onclick="validateSignup('1')" >
            <span style="float:right;margin-right:5px">¿Have an account?<a id='login' href='#' style='margin-left: 10px'> Log in </a></span>
        </li>
    </ul>
    <ul id='loginTable' style="list-style: none;text-align:center; display: none" class="txt-center">
        <li><input id="signupUser" type="text" name="username" onchange="validateSignup('0')" placeholder="Username"></li>
        <li><input id="password" type="password" name="password" onchange="validateSignup('0')" placeholder="Password "></li>
        <li style="max-width: 50%;margin: 0 auto;">
            <input type="submit" id="btn-signup" name="submitSignup" value="Access" style="cursor: pointer; width: 50%;float:left;margin-left: 5px;border: none;background-color: #3897f0;font-size: 17px;color: white;" onclick="validateSignup('1')" >
            <span style="float:right;margin-right:5px">¿Don't have an account?<a id='registry' href='#' style='margin-left: 10px'> Sign up </a></span>
        </li>
    </ul>
    <br>
</form>

try {

if(isset($_POST['registry'])){
    echo 'Rgistry';
    $username = strip_tags($_POST["username"]);
    $email = strip_tags($_POST["email"]);
    $password = strip_tags($_POST["password"]);
    $verPassword = strip_tags($_POST['verPassword']);
    $passwordEncrypt = password_hash($password, PASSWORD_DEFAULT, array("cost" => 12));

    if($password != $verPassword){
        echo "Error, try later!";
        exit;
    }else{

    }
    require('db_con.php');
    require("functions.php");
    $user_id = "" . generateId();
    $query = "INSERT INTO list_r (USERNAME, EMAIL, PASSWORD) VALUES ('$username', '$email', '$passwordEncrypt'); ";

    $result = $base -> prepare($query);
    $result -> execute(array());
    $result -> closeCursor();

    session_start();
    $_SESSION['user'] = $_POST["username"];
    // header('location:../redover.php');

}else if(isset($_POST['submitSignup'])){
    echo 'Singup';
    $username=strtolower(htmlentities(addslashes($_POST["username"])));
    $password=htmlentities(addslashes($_POST["password"]));
    $counter = 0;
    require('db_con.php');
    $sql="SELECT * FROM list_r WHERE USERNAME= :username OR EMAIL= :username";
    $result=$base->prepare($sql);
    $result->bindValue(":username", $username);
    $result->bindValue(":password", $password);
    $result->execute();
    $result->execute(array(":username"=>$username));
    $registry_count=$result->rowCount();

    if($registry_count){
        $authenticaded = true;

        while($registry=$result->fetch(PDO::FETCH_ASSOC)){

            if(password_verify($password, $registry['PASSWORD'])){
                $counter = $counter + 1;
            }
        }
        if($counter > 0){
            session_start();
            $_SESSION["user"]=strtolower($_POST["username"]);
            // header("location:../redover.php");
            $resultado->closeCursor();
        }else{
            $resultado->closeCursor();
            echo 'Error, try later';
            exit;
        }
    }
}else{
    echo "Submit button name not found";
}

} catch (Exception $e) {
    echo "Error, try later!";
    echo "Error at line: " . $e -> getLine();
}