How can rowspan attributes in PHP-generated HTML tables lead to display issues?

When using rowspan attributes in PHP-generated HTML tables, it is important to ensure that the rowspan values are correctly calculated to avoid display issues. If the rowspan values are not properly set, it can lead to misaligned or overlapping table cells, causing the table to display incorrectly. To solve this issue, make sure to accurately calculate the rowspan values based on the data being displayed in the table.

<?php
// Sample code to generate a table with correct rowspan values

$data = array(
    array("A", "B", "C"),
    array("D", "E", "F"),
    array("G", "H", "I"),
);

echo "<table border='1'>";
foreach ($data as $row) {
    echo "<tr>";
    foreach ($row as $key => $value) {
        if ($key == 0) {
            echo "<td rowspan='3'>$value</td>";
        } else {
            echo "<td>$value</td>";
        }
    }
    echo "</tr>";
}
echo "</table>";
?>