Index: EditProfile.php
===================================================================
--- EditProfile.php	(revision e3d4e0a8bc0f13135f27c0b055b5c00f64a28f01)
+++ EditProfile.php	(revision e3d4e0a8bc0f13135f27c0b055b5c00f64a28f01)
@@ -0,0 +1,106 @@
+<?php
+    session_start();
+    if(!isset($_SESSION['user_ID'])) {
+        header("Location: ./Log In.php");
+    }
+    
+    require './connect.php';
+
+    if($_SERVER['REQUEST_METHOD'] === 'POST') {
+
+        $res = mysqli_query($conn, "SELECT users_information.*, users.username, users.email FROM users_information INNER JOIN users ON users_information.user_id = users.user_ID WHERE 
+            users.user_id = {$_SESSION['user_ID']};
+        ");
+
+        if(mysqli_num_rows($res) == 0) {
+            mysqli_query($conn, "INSERT INTO users_information(user_id, name, surname, phone_number, city, address, postal_code) VALUES (
+                {$_SESSION['user_ID']}, '{$_POST['name']}', '{$_POST['surname']}', '{$_POST['phone_number']}', '{$_POST['city']}', '{$_POST['address']}', '{$_POST['postal_code']}');
+            ");
+        }
+        else {
+            mysqli_query($conn, "UPDATE users_information SET name = '{$_POST['name']}', surname = '{$_POST['surname']}', phone_number = '{$_POST['phone_number']}',
+                city = '{$_POST['city']}', address = '{$_POST['address']}', postal_code = '{$_POST['postal_code']}' WHERE user_id = {$_SESSION['user_ID']};
+            ");
+        }
+
+        header('location: ./Profile.php');
+        die();
+    }
+
+    $res = mysqli_query($conn, "SELECT users_information.*, users.username, users.email FROM users_information INNER JOIN users ON users_information.user_id = users.user_ID WHERE 
+        users.user_id = {$_SESSION['user_ID']};
+    ");
+
+    $user_data = $res->fetch_assoc();
+?>
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
+        <link rel="stylesheet" href="./CSS/EditProfile.css">
+        <title>Edit Profile</title>
+    </head>
+    <body>
+            <form action="./EditProfile.php" method="POST">
+                <div class="form-section">
+                    <div class="form-card">
+                        <label for="name">Име:</label>
+                        <input type="text" name="name" required value="<?php
+                            if(mysqli_num_rows($res) != 0) {
+                                echo $user_data['name'];
+                            }
+                        ?>">
+                    </div>
+                    <div class="form-card">
+                        <label for="surname">Презиме:</label>
+                        <input type="text" name="surname" required value="<?php
+                            if(mysqli_num_rows($res) != 0) {
+                                echo $user_data['surname'];
+                            }
+                        ?>">
+                    </div>
+                </div>
+                <div class="form-section">
+                    <div class="form-card">
+                        <label for="phone-number">Тел. Број:</label>
+                        <input type="tel" name="phone_number" required value="<?php
+                            if(mysqli_num_rows($res) != 0) {
+                                echo $user_data['phone_number'];
+                            }
+                        ?>">
+                    </div>
+                    <div class="form-card">
+                        <label for="city">City:</label>
+                        <input type="text" name="city" required value="<?php
+                            if(mysqli_num_rows($res) != 0) {
+                                echo $user_data['city'];
+                            }
+                        ?>">
+                    </div>
+                </div>
+                <div class="form-section">
+                    <div class="form-card">
+                        <label for="address">Address:</label>
+                        <input type="text" name="address" required value="<?php
+                            if(mysqli_num_rows($res) != 0) {
+                                echo $user_data['address'];
+                            }
+                        ?>">
+                    </div>
+                    <div class="form-card">
+                        <label for="postal-code">Postal Code:</label>
+                        <input type="text" name="postal_code" required value="<?php
+                            if(mysqli_num_rows($res) != 0) {
+                                echo $user_data['postal_code'];
+                            }
+                        ?>">
+                    </div>
+                </div>
+                <div class="form-section" style="display: flex; justify-content: center;">
+                    <a href="Profile.php">Back</a>
+                    <input type="submit" value="Save">
+                </div>
+            </form>
+    </body>
+</html>
