Update

Author: Dominik-developer

public/functions.php

@@ -1,19 +1,13 @@
 <?php
 
-session_start();
-
-
 // header
-function head(){
-    ?>
-
-    <h1> Blog </h1>
+function head(): string{
 
-    <?php
+    return '<h1> Blog </h1>';
 }
 
 // main
-function all_articles(){
+function all_articles(): void{
 
     require 'connect.php';
 
@@ -71,12 +65,13 @@ function all_articles(){
 
 
 //footer
-function foot(){
-    ?>  
+function foot(): string{
+    
+    return '
         <div>
             <a>&copy 2024 - <?php echo date("Y"); ?> Dominik-developer <!--project:one®--></a>
             <br><br>
              <a> Contact: www.blog@example.com</a> <!--<a>+00 000 000 000  </a>-->
-        </div>
-    <?php
+        </div>';
+   
 }

public/index.php

@@ -3,11 +3,8 @@
 session_start();
 
 require_once 'service.alg.php';
-//require_once 'main.php';
 
     service();
 
     header('Location: main.php');
 
-
-

public/service.alg.php

@@ -1,10 +1,8 @@
 <?php
 
-function service()
+function service(): void
 {
 
-    session_start();
-
     require 'connect.php';
 
     $conn = @new mysqli($host, $db_user, $db_password, $db_name);
@@ -26,22 +24,17 @@ function service()
 
             if($num >0)
             {
-
                 $row = $result->fetch_assoc();
 
                 $_SESSION['service_status'] = $row['service_status'];
-                
-                //echo $_SESSION['servis_status'];
 
                 if(!$_SESSION['service_status'] == 0)
                 {
-                    echo 'servis';
                     //unset($_SESSION['status']);
                     header('Location: service.html');
                 }
                 else
                 {
-                    //echo 'no servis';
                     //$_SESSION['user_session'] = session_id(); // Przypisanie identyfikatora sesji
                 }
 

public/single.alg.php

@@ -2,15 +2,15 @@
 
 
 
-function articles($restored_title) {
+function articles($restored_title): void {
     require 'connect.php';
 
     $conn = new mysqli($host, $db_user, $db_password, $db_name);
 
     if ($conn->connect_errno) {
         header("HTTP/1.1 500 Internal Server Error");
         header("Location: error_404.php");
-        return;
+        exit();
     }
 
     // prepared statement
@@ -23,7 +23,7 @@ function articles($restored_title) {
     if ($result->num_rows === 1) {
         $row = $result->fetch_assoc();
 
-        echo '
+        echo'
             <article> 
                 <header id="title">
                     <a>' . htmlspecialchars($row['title']) . '</a>