dokonceni

form-login.php

@@ -0,0 +1,13 @@
+<?php
+
+if (isset($_GET["error"]) && $_GET["error"] == 1) {
+    echo "<p>Neplatné jméno nebo heslo</p>";
+}
+
+?>
+
+<form name="login" action="/login.php" method="post">
+    <input type="text" name="login" placeholder="Login">
+    <input type="password" name="password" placeholder="Heslo">
+    <button type="submit">Přihlásit</button>
+</form>

index.php

@@ -12,21 +12,28 @@
 
 <?php
 
+$is_user_logged = false;
+
 if (isset($_SESSION["login"])) {
     if (strlen($_SESSION["login"]) > 0) {
         echo "Jste přihlášen jako: " . $_SESSION["login"];
+        $is_user_logged = true;
     } else {
         echo "Nejste přihlášen";
     }
 }
 
+echo "<br>";
+
+if ($is_user_logged) {
+    echo "<a href='/logout.php'>Odhlásit</a>";
+} else {
+    include "form-login.php";
+}
+
 ?>
 
-<form name="login" action="/login.php" method="post">
-    <input type="text" name="login" placeholder="Login">
-    <input type="password" name="password" placeholder="Heslo">
-    <button type="submit">Přihlásit</button>
-</form>
+
 
 </body>
 </html>

login.php

@@ -13,9 +13,12 @@ if ($_POST["login"] == "admin" &&
 {
     echo "prihlaseni probehlo uspesne";
     $_SESSION["login"] = $_POST["login"];
-} else {
+    header("Location: /index.php");
+} 
+else {
     echo "prihlaseni neprobehlo";
     $_SESSION["login"] = "";
+    header("Location: /index.php?error=1");
 }
 
-header("Location: /index.php");
+

logout.php

@@ -0,0 +1,6 @@
+<?php
+session_start();
+
+session_destroy();
+
+header("Location: /index.php");