What's wrong with openserver?

Question

css

Here is the error PDO::__construct(): MySQL server has gone away
Points to the 4th line of this code

<?php

try {
    $pdo = new PDO('mysql:host=localhost;dbname=u571306', 'root', '', array(PDO::ATTR_PERSISTENT => true));
} catch (PDOException $ev) {
    print "Ошибка подключения к БД! <br>" . $ev->getMessage() . "<br>";
    die();
}

What is the problem?

Answer 1

https://codepen.io/bootd/pen/xNwVvV

Answer 2

Everything is here

Answer 3

just try

$pdo = new PDO('mysql:host=localhost;dbname=u571306', 'root', '');

and, while it's not related to the error, don't use print .