Find last value of array in foreach cicle - php

Question

I've data stored in a array ($rows).
For read the array and genarate a dinamic table I use foreach function.
<table>
foreach ($rows as $row) {
echo "<tr>";
echo "<td>" . $row['field1'] . "</td>";
echo "<td>" . $row['field2'] . "</td>";
echo "<td>" . $row['filed3'] . "</td>";
echo "</tr>";
}
</table>
My goal is to find the last value of the array (the end) in order to change the class of TR element for the last line displayed.
How could I do this?
Thanks

Answer 1

Try this:
foreach ($rows as $key => $row) {
$end = end($rows) === $row ? 'class="last"' : '';
echo "<tr $end>";
echo "<td>" . $row['field1'] . "</td>";
echo "<td>" . $row['field2'] . "</td>";
echo "<td>" . $row['filed3'] . "</td>";
echo "</tr>";
}
This method works for multidimentional arrays as well.
http://codepad.org/HQG9ytBX
Edit. As pointed in comments, this approach may potentially trigger false end result if some values in the array are duplicated (with the last). Correct bullet-proof version should be:
foreach ($rows as $key => $row) {
$end = end($rows) === $row && $key === key($rows) ? 'class="last"' : '';
// ...

Answer 2

foreach ($rows as $row) {
$is_last_row = ++$i == count($rows);
echo "<tr>";
echo "<td>" . $row['field1'] . "</td>";
echo "<td>" . $row['field2'] . "</td>";
echo "<td>" . $row['filed3'] . "</td>";
echo "</tr>";
}
here $i should be an unused variable.

Answer 3

Try This
$numItems = count($rows);
$i = 0;
foreach($rows as $row) {
$trClass = 'firstclass';
if(++$i === $numItems)
{
$trClass = 'lastclass';
}
echo "<tr class='$trclass'>";
echo "<td>" . $row['field1'] . "</td>";
echo "<td>" . $row['field2'] . "</td>";
echo "<td>" . $row['filed3'] . "</td>";
echo "</tr>";
}

Answer 4

// first, let's find out the last key
end($rows);
$last = key($rows);
// then just loop over
foreach ($rows as $key => $row) {
if ($key == $last) {
// last leaf of the summer...
}
echo "<tr>";
echo "<td>" . $row['field1'] . "</td>";
echo "<td>" . $row['field2'] . "</td>";
echo "<td>" . $row['filed3'] . "</td>";
echo "</tr>";
}