<?php

  $dbHost = 'localhost';
  $dbName = 'invento';
  $dbUser = 'root';
  $dbPass = '';

try {

  $pdo = new PDO("mysql:host=$dbHost;dbname=$dbName","$dbUser", "$dbPass");
  $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

} catch(Exception $e) {

  echo $e->getMessage();
}


$html = file_get_contents('https://www.google.com');
preg_match('/<title>(.*)</title>/i', $html, $title);

$title_out = $title[1];

$sql = "INSERT INTO prueba (title) VALUES ($title_out)";

  $query = $pdo->prepare($sql);

  $result = $query->execute([
    'title' => $title_out
  ]);

$title_out = $title[1];
$sql = "INSERT INTO prueba (title) VALUES (:title)";
$query = $pdo->prepare($sql);
$result = $query->execute(['title' => $title_out]);

$title_out = $title[1];
$sql = "INSERT INTO prueba (title) VALUES (?)";
$query = $pdo->prepare($sql);
$result = $query->execute([$title_out]);

$html = file_get_contents('https://www.google.com');
$dom = new domdocument();
$dom->loadHTML($html);
$titleout = $dom->getElementsByTagName('title')[0]->nodeValue;