I wrote a simple while loop:
while($fetch = $stm->fetchAll()) {
echo '<tr class=""'>;
echo '<td>' . $fetch['name'] . '</td>';
echo '</tr>';
}
How can I make the class="" alternate everytime so that every other row is white and every other row is grey? I already have the CSS class "greyRow" but don't know how to logically use it to make them alternate in PHP.
I'd assume I'd need a for loop, but how do I use it for what I'm trying to do?
Thanks.
A simple way would be to implement a variable to "count"
$odd_row = 1;
while($fetch = $stm->fetchAll()) {
if ($odd_row == 0)
echo '<tr>';
else
echo '<tr class="greyRow">';
echo '<td>' . $fetch['name'] . '</td>';
echo '</tr>';
$odd_row = !$odd_row;
}
But there are better ways, using strictly CSS.
You can use a counter variable if $counter % 2 == 0 (or !($counter % 2)) you're on an even numbered row. Otherwise it's odd.
$counter = 1;
while($fetch = $stm->fetchAll()) {
echo '<tr class="', (!($counter % 2) ? 'even' : 'odd'), '">';
echo '<td>' . $fetch['name'] . '</td>';
echo '</tr>';
$counter++;
}
You can also just try an nth-child CSS selector and avoid doing this in PHP at all. It's not cross browser, however. If you need to support IE < 8, you'll need to do the above.
Example:
#your-table tr:nth-child(odd) {
// style odd rows differently
}
Here is my method:
while($fetch = $stm->fetchAll()) {
if( !isset( $row_num ) ) $row_num = 1; // at first $row_num does not exist so create it and make uneven (start with 1)
$row_class = (++$row_num % 2) ? 'even' : 'odd'; // then check whether $row_num is odd or even and assign it the corresponding class name
echo '<tr class="'.$row_class.'">';
echo '<td>' . $fetch['name'] . '</td>';
echo '</tr>';
}
