Better structure

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "intelephense.environment.phpVersion": "7.4.33"
+}

database.php

@@ -1,15 +1,35 @@
 <?php
-function openConnection() {
-  $dataAccess = parse_ini_file("phpCourse/configs/db.ini", true);
-  
-  $db = new PDO("mysql:host=" . $dataAccess["ZEDAT"]["host"] . 
-  ";dbname=" . $dataAccess["ZEDAT"]["database"] . ";charset=utf8", 
-  $dataAccess["ZEDAT"]["user"], $dataAccess["ZEDAT"]["passwd"], 
-  array(PDO::ATTR_PERSISTENT => false));
-  
-  $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
-  $db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
-  
-  return $db;
+class DB extends PDO
+{
+  public function __construct($dsn, $username = null, $password = null, array $options = null)
+  {
+    parent::__construct($dsn, $username, $password, $options);
+  }
+
+  static function openConnection()
+  {
+    $conn = null;
+    try {
+      $dataAccess = parse_ini_file("configs/db.ini", true);
+
+      $conn = new PDO(
+        "mysql:host=" . $dataAccess["ZEDAT"]["host"] .
+          ";dbname=" . $dataAccess["ZEDAT"]["database"] . ";charset=utf8",
+        $dataAccess["ZEDAT"]["user"],
+        $dataAccess["ZEDAT"]["passwd"],
+        array(PDO::ATTR_PERSISTENT => false)
+      );
+
+      $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+      $conn->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
+    } catch (PDOException $exc) {
+      echo $exc->getMessage();
+    }
+    return $conn;
+  }
+
+  static function closeConnection(&$conn)
+  {
+    $conn = null;
+  }
 }
-?>

errors.php

@@ -0,0 +1,3 @@
+<?php
+ini_set("display_errors", 1);
+error_reporting(E_ALL);

headers.php

@@ -0,0 +1,8 @@
+<?php
+class Headers
+{
+  static function json()
+  {
+    header("Content-Type: text/json");
+  }
+}

index.php

@@ -1,10 +1,10 @@
 <?php
-include_once 'database.php';
+include_once "errors.php";
+include_once "headers.php";
+Headers::json();
+include_once "database.php";
 
-ini_set(display_errors, 1);
-error_reporting(E_ALL);
-
-$db = openConnection();
+$db = DB::openConnection();
 
 $query = "SELECT * FROM users";
 
@@ -12,5 +12,6 @@ $stmt = $db->prepare($query);
 $stmt->execute();
 $result = $stmt->fetch(PDO::FETCH_ASSOC);
 
-echo json_encode($result);	
-?>
+DB::closeConnection($db);
+
+echo json_encode($result);

phpCourse.code-workspace

@@ -0,0 +1,7 @@
+{
+	"folders": [
+		{
+			"path": "."
+		}
+	]
+}