পিএইচপি nested-key

<?php

$user = [
    "নাম" => "মোঃ আরিফ",
    "তথ্য" => [
        "স্বপ্ন" => "সফটওয়্যার ইঞ্জিনিয়ার",
        "দেশ" => "বাংলাদেশ"
    ]
];

echo "<table border='1'>";

echo "<tr>";
echo "<th>নাম</th>";
echo "<td>" . $user["নাম"] . "</td>";
echo "</tr>";

echo "<tr>";
echo "<th>তথ্য</th>";
echo "<td>";

echo "<table border='1'>";

echo "<tr>";
echo "<th>স্বপ্ন</th>";
echo "<td>" . $user["তথ্য"]["স্বপ্ন"] . "</td>";
echo "</tr>";

echo "<tr>";
echo "<th>দেশ</th>";
echo "<td>" . $user["তথ্য"]["দেশ"] . "</td>";
echo "</tr>";

echo "</table>";

echo "</td>";
echo "</tr>";

echo "</table>";

?>