MySQLi が配列をフェッチすると出力が 2 倍になるのはなぜですか?

<code class="php">$table = get_personel_table(1);

function get_personel_table($id) {
    global $connection;
    $query = "SELECT * FROM employees WHERE id=$id ORDER BY id ASC";
    $query_result = mysqli_query($connection, $query);
    confirm_query($query_result);
    $query_result_array = mysqli_fetch_array($query_result);
    return $query_result_array; // returns associative array!
}

foreach($table as $table_var) {
    echo "<td>$table_var</td>";
}</code>

1 1   1   1   jordan  jordan  9108121544  9108121544  testEmail   testEmail   testAddress testAddress testCounty  testCounty

<code class="php">$query_result_array = mysqli_fetch_array($query_result, MYSQLI_NUM); // numeric keys only
$query_result_array = mysqli_fetch_array($query_result, MYSQLI_ASSOC); // associative keys only</code>

<code class="php">$query_result_array = mysqli_fetch_row($query_result); // numeric keys only
$query_result_array = mysqli_fetch_assoc($query_result); // associative keys only</code>