diff --git a/www2databaze/assets/database.php b/www2databaze/assets/database.php
index 5dad3cf..6d249e5 100644
--- a/www2databaze/assets/database.php
+++ b/www2databaze/assets/database.php
@@ -1,12 +1,24 @@
 <?php
-$db_host = "127.0.0.1";
-$db_user = "kankys.jr";
-$db_password = "Heslo123";
-$db_name = "skola";
+/**
+ * Připojení se k databázi
+ * 
+ * @return object - připojení k databázi
+ * 
+ */
+function connectionDB() {
+    $db_host = "127.0.0.1";
+    $db_user = "kankys.jr";
+    $db_password = "Heslo123";
+    $db_name = "skola";
 
-$connection = mysqli_connect($db_host, $db_user, $db_password, $db_name);
-if (mysqli_connect_error()) {
-    echo mysqli_connect_error();
-    exit();
+    $connection = mysqli_connect($db_host, $db_user, $db_password, $db_name);
+
+    if (mysqli_connect_error()) {
+        echo mysqli_connect_error();
+        exit();
+    }
+
+    return $connection;
 }
+
 ?>
\ No newline at end of file
diff --git a/www2databaze/assets/footer.php b/www2databaze/assets/footer.php
new file mode 100644
index 0000000..445bed8
--- /dev/null
+++ b/www2databaze/assets/footer.php
@@ -0,0 +1,3 @@
+<footer>
+    <p>&copy; Škola čar a kouzel v Bradavicích, Lukáš Kaňka, 2024</p>
+</footer>
diff --git a/www2databaze/jeden-zak.php b/www2databaze/jeden-zak.php
index 680b36a..bf99ee5 100644
--- a/www2databaze/jeden-zak.php
+++ b/www2databaze/jeden-zak.php
@@ -1,7 +1,10 @@
 <?php
 global $connection;
+
 require "assets/database.php";
 
+$connection = connectionDB();
+
 if (isset($_GET["id"]) and is_numeric($_GET["id"])) {
     $sql = "SELECT * FROM student WHERE id = ". $_GET["id"];
 
diff --git a/www2databaze/pridat-zaka.php b/www2databaze/pridat-zaka.php
index 908cde0..cbea1be 100644
--- a/www2databaze/pridat-zaka.php
+++ b/www2databaze/pridat-zaka.php
@@ -2,14 +2,18 @@
 
 
 global $connection;
+require "assets/database.php";
+
 
 if ($_SERVER ["REQUEST_METHOD"] === "POST") {
-
-    require "assets/database.php";
+   
 
     $sgl = "INSERT INTO student (first_name, second_name, age, life, college)
         VALUES (?, ?, ?, ?, ?)";
 
+    $connection = connectionDB();
+
+
     $statement = mysqli_prepare($connection, $sgl);
 
     if ($statement === false) {
@@ -40,15 +44,15 @@ if ($_SERVER ["REQUEST_METHOD"] === "POST") {
 <main>
     <section class="add-form">
         <form action="pridat-zaka.php" method="POST">
-            <input type="text" name="first_name" placeholder="Křestní jméno">
+            <input type="text" name="first_name" placeholder="Křestní jméno" required>
             <br>
-            <input type="text" name="second_name" placeholder="Příjmení">
+            <input type="text" name="second_name" placeholder="Příjmení" required>
             <br>
-            <input type="number" name="age" placeholder="Věk" min="10">
+            <input type="number" name="age" placeholder="Věk" min="10" required>
             <br>
-            <textarea name="life" placeholder="Podrobnosti o žákovi"></textarea>
+            <textarea name="life" placeholder="Podrobnosti o žákovi" required></textarea>
             <br>
-            <input type="text" name="college" placeholder="Kolej">
+            <input type="text" name="college" placeholder="Kolej" required>
             <br>
             <input type="submit" value="Přidat žáka">
         </form>
diff --git a/www2databaze/ucimese/funkce.php b/www2databaze/ucimese/funkce.php
new file mode 100644
index 0000000..48395a0
--- /dev/null
+++ b/www2databaze/ucimese/funkce.php
@@ -0,0 +1,21 @@
+<?php
+/** 
+ * Popis studenta 
+ *
+ * @param string $first_name - křestní jméno studenta
+ * @param string $second_name - příjmení studenta
+ * @param int $age - věk studenta
+ * 
+ * @return string popis studenta
+ */
+function studentDescription($first_name, $second_name, $age){
+    return "Toto je " . $first_name . " " . $second_name . ".
+    Věk studenta je " . $age . " let. <br>";
+    }
+
+
+// Použití
+echo studentDescription("Harry", "Potter", 15);
+echo studentDescription("Ron", "Weasley", 14);
+$student = studentDescription("Hermiona", "Grangerová", 15);
+echo $student;
\ No newline at end of file
diff --git a/www2databaze/zaci.php b/www2databaze/zaci.php
index 5771373..9058e93 100644
--- a/www2databaze/zaci.php
+++ b/www2databaze/zaci.php
@@ -4,6 +4,8 @@ require "assets/database.php";
 
 $sql = "SELECT * FROM student";
 
+$connection = connectionDB();
+
 $result = mysqli_query($connection, $sql);
 
 if ($result === false) {