Table, TR each 2 loop, PHP, HTML

Question

I got an html table, and I use some loop to get some data, this data is displaying this way:

Data
... next loop


        

Answer 1

Using the modulo (%) operator is always a great solution for the problem you have above. Since you didn't provide details about the implementation language, I've taken the liberty to provide you with a php example of how it's done.

<?php
    $breakPoint = 3;            // This will close the <tr> tag after 3 outputs of the <td></td> tags
    $data       = "Data";       // Placeholder of the data

    echo "<tr>";

    for($i = 1; $i <= 10; $i++)
    {
        echo "<td>{$data}</td>";

        if ($i % 3 == 0)
            echo "</tr><tr>";       // Close and reopen the <tr> tag
    }

    echo "</tr>";
?>

Answer 2

If you have some counter in your loop you can use Modulus for this.

It's basically what's left of a number if you divide it.

Example:

for($i = 1; $i < 11; $i++) {
    if ($i % 2 === 0) {
        print('this is printed every two times');
    }
    if ($i % 3 === 0) {
        print('this is printed every three times');
    }
}

If you use a foreach() in stead you should just make a counter yourself (as Link stated you could also use the key of an array if it contains nice incremental keys):

$i = 1;
foreach($array as $item) {
    if ($i % 2 === 0) {
        print('this is printed every two times');
    }
    if ($i % 3 === 0) {
        print('this is printed every three times');
    }
    $i++;
}

Or in your specific case it would look something like:

print('<tr>');
$i = 1;
foreach($array as $item) {
    if ($i % 3 === 0) {
        print("</tr>\n<tr>");
    }
    print("<td>$item</td>\n");
    $i++;
}
print('</tr>');

The above is just a basic example.

You should also check whether the number of the columns is balanced and if not either add a colspan or an empty columns to balance it.