}
if (isset($_POST['cp'])) {
    $CP = $_POST['cp'];
} else {
    $CP = "";
}
if (isset($_POST['direccio'])) {
    $direccio = $_POST['direccio'];
} else {
    $direccio = "";
}
if (isset($_POST['poblacio'])) {
    $poblacio = $_POST['poblacio'];
} else {
    $poblacio = "";
}
$ip = get_ip_real();
if (validar_email($email)) {
    if (email_existeix($email)) {
        echo "2";
    } else {
        if ($nom != "" && $cognom != "" && $email != "" && $pass != "" && $telf != "" && $CP != "" && $direccio != "" && $poblacio != "") {
            insertar_nou_usuari($nom, $cognom, $email, $pass, $telf, $CP, $direccio, $poblacio, $ip);
            echo "1";
        } else {
            echo "4";
        }
    }
} else {
    echo "3";
}
<?php

include '_functions/functions.php';
ini_set('display_errors', "1");
if (isset($_POST['email_login'])) {
    $email = $_POST['email_login'];
} else {
    $email = "";
}
if (isset($_POST['contrasenya_login'])) {
    $pass = $_POST['contrasenya_login'];
} else {
    $pass = "";
}
if (validar_email($email)) {
    if (email_existeix($email) && contrasenya_correcta($pass)) {
        echo "1";
    } else {
        echo "2";
    }
} else {
    echo "3";
}