<?php
require_once __DIR__ . '/wp-config.php';

$mysqli = @new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);

if ($mysqli->connect_error) {
  echo "Connexion DB KO\n";
  echo "Host: " . DB_HOST . "\n";
  echo "User: " . DB_USER . "\n";
  echo "DB: " . DB_NAME . "\n";
  echo "Erreur: " . $mysqli->connect_error . "\n";
} else {
  echo "Connexion DB OK\n";
  $mysqli->close();
}