পিএইচপি nested-mixed

<?php

$user = [
    "নাম" => "মোঃ আরিফ",
    "কাজ" => "প্রোগ্রামিং",
    "দক্ষতা" => ["পিএইচপি", "পাইথন", "জাভাস্ক্রিপ্ট"],
    "তথ্য" => [
        "দেশ" => "বাংলাদেশ"
    ]
];

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

echo "<tr>";
echo "<th colspan='2'>তথ্য</th>";
echo "</tr>";

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

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

echo "<tr>";
echo "<th>দক্ষতা</th>";
echo "<td>" . implode(", ", $user["দক্ষতা"]) . "</td>";
echo "</tr>";

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

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

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

echo "</table>";

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

echo "</table>";

?>