//first archive, connection to the mysql/phpmyadmin
<?php

$host = "127.0.0.1";
$usuario = "root";
$senha = "root";
$banco = "ecommerce";

$dbcon = new mysqli($host, $usuario, $senha, $banco);

?>

//second code, with the messages of the extra space
<?php
include_once 'conexao.php';

$senha=$_POST['senha'];
 $email=$_POST['email'];

$sql = $dbcon->query("SELECT * FROM clientelogin WHERE email='$email' AND senha='$senha'");

if (mysqli_num_rows($sql) > 0) {

    echo "extra space above";
} else {
    echo "login_erro";
}

?>