What are the best practices for handling empty variables in PHP to prevent displaying empty rows in a table?

When displaying data in a table in PHP, it's important to handle empty variables properly to prevent displaying empty rows. One way to do this is by checking if the variable is empty before outputting it in the table row. If the variable is empty, you can display a placeholder or skip that row altogether.

<?php
// Example data with some empty variables
$data = [
    ['name' => 'John Doe', 'age' => 25],
    ['name' => '', 'age' => 30],
    ['name' => 'Jane Smith', 'age' => ''],
];

// Display data in a table
echo '<table>';
foreach ($data as $row) {
    if (!empty($row['name']) && !empty($row['age'])) {
        echo '<tr>';
        echo '<td>' . $row['name'] . '</td>';
        echo '<td>' . $row['age'] . '</td>';
        echo '</tr>';
    }
}
echo '</table>';
?>