What steps can be taken to address the missing data entries in the tables generated by the code?

The missing data entries in the tables generated by the code can be addressed by checking for empty or null values before displaying them in the table. This can be done by using conditional statements to handle missing data entries gracefully, such as displaying "N/A" or a placeholder text instead of leaving the cell empty.

// Check for missing data entries and display placeholder text
foreach ($data as $row) {
    echo "<tr>";
    foreach ($row as $value) {
        echo "<td>";
        echo !empty($value) ? $value : "N/A";
        echo "</td>";
    }
    echo "</tr>";
}