In PHP, what strategies can be employed to ensure that table headers are displayed only once while multiple data entries are displayed underneath without repetition?

To ensure that table headers are displayed only once while multiple data entries are displayed underneath without repetition, you can use a flag variable to keep track of whether the headers have been displayed or not. By checking this flag variable before displaying the headers, you can ensure that they are only displayed once. Here is a PHP code snippet that demonstrates this approach:

<?php
// Sample data
$data = [
    ['Name' => 'John Doe', 'Age' => 25],
    ['Name' => 'Jane Smith', 'Age' => 30],
    ['Name' => 'Mike Johnson', 'Age' => 28]
];

// Flag variable to track if headers have been displayed
$headersDisplayed = false;

echo '<table>';
foreach ($data as $row) {
    // Display headers only if they have not been displayed yet
    if (!$headersDisplayed) {
        echo '<tr>';
        foreach ($row as $key => $value) {
            echo '<th>' . $key . '</th>';
        }
        echo '</tr>';
        $headersDisplayed = true;
    }

    // Display data entries
    echo '<tr>';
    foreach ($row as $value) {
        echo '<td>' . $value . '</td>';
    }
    echo '</tr>';
}
echo '</table>';
?>