Remove arguments on database connection function

src/database.php

@@ -1,10 +1,12 @@
 <?php
 
-function connectDatabase(string $user, string $pass, string $db) {
-    $unix_socket = '.mysql/mysql.sock';
+function connectDatabase() {
+    $connection = 'unix_socket';
+    $host = '.mysql/mysql.sock';
     $charset = 'utf8mb4';
-    $dsn = "mysql:unix_socket=$unix_socket;dbname=$db;charset=$charset";
-    $pdo = new PDO($dsn, $user, $pass);
+    $db = 'practica';
+    $dsn = "mysql:$connection=$host;dbname=$db;charset=$charset";
+    $pdo = new PDO($dsn, "practica", "practica");
     return $pdo;
 }