Logica de verificacion terminada

logic/login.php

@@ -0,0 +1,39 @@
+<?php
+
+require 'messages.php';
+require 'sanitize.php';
+
+$user = $_POST['user'];
+$password = $_POST['password'];
+
+if (isset($_POST['submit'])) {
+
+    if(isset($user) && isset($password)) {
+
+        if(strlen($user) <= 20) {
+
+            if(strlen($password) <= 20){
+
+                sanitize('user', $user);
+
+            } else {
+                echo error('The password has more characters than allowed!');
+                echo backToPreviusPage(3, '../login.html');
+            }
+
+        } else {
+            echo error('The user has more characters than allowed!');
+            echo backToPreviusPage(3, '../login.html');
+        }
+
+    } else {
+        echo error('Some of the fields were not filled. Try again please');
+        echo backToPreviusPage(3, '../login.html');
+    }
+
+} else {
+    echo error('There was an error sending the form');
+    echo backToPreviusPage(3, '../login.html');
+}
+
+?>