PHP loop split by 4

Question

How would I achieve this PHP task?

I have an unordered html list and and array. My code adds list tags to each item in the array to create one big unordered list

            <ul>
                 <?php foreach ($rows as $id => $row): ?>
                        <li><?php print $row ?></li>
                <?php endforeach; ?>
            </ul>

current output below

            <ul>
                <li>01</li>
                <li>02</li>
                <li>.....</li>
                <li>.....</li>
                <li>15</li>
            </ul>

What I want is to split the list items so that they are in groups of 4 as sub unordered lists. If the number is not divisible by 4 then the remainder should be a smaller list at the end, for example.

            <ul>
                <ul>
                    <li>01</li>
                    <li>02</li>
                    <li>.....</li>
                    <li>.....</li>
                </ul>
                <ul>
                    <li>05</li>
                    <li>06</li>
                    <li>.....</li>
                    <li>.....</li>
                </ul>
                <ul>
                    <li>09</li>
                    <li>10</li>
                </ul>
            </ul>

Thanks in advance.

have you loop maintain a counter, when the counter reach to a value which provide a mod 0 you draw a </ul><ul> and also a starting <ul> and a ending </ul> at the beginning and end of the loop — DevZer0
– DevZer0, Commented Aug 15, 2013 at 12:22

Tomas Creemers · Accepted Answer · 2013-08-15 12:40:07Z

5

<ul>
<?php foreach ($rows as $id => $row): ?>
    <?php if ($id > 0 && $id % 4 === 0): ?>
        </ul><ul>
    <?php endif ;?>
    <li><?php echo $row; ?></li>
<?php endforeach; ?>
</ul>

(Note that if the key of your $rows array is not simply an index number, you'll need to maintain your own counter variable.)

edited Aug 15, 2013 at 12:40

answered Aug 15, 2013 at 12:23

Tomas Creemers

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1 Comment

n00b13 Over a year ago

Thanks very much. See my final code below. I have included a statement to close the tags at the end of the list, regardless if it is divisible by four or not.

Mohammad Masoudian · Accepted Answer · 2013-08-15 12:24:09Z

0

<?php
$id=0;
foreach ($rows as $id => $row)
{
    $id+=1;
    if ($id % 4 == 0)
    {
         echo "<ul>";
    }

    echo "<li>$i</li>";

    if ($id % 4 == 0)
    {
         echo "</ul>";
    }
}

if ($id % 4 != 0)
{
    echo "</ul>";
}    
?>

answered Aug 15, 2013 at 12:24

Mohammad Masoudian

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2 Comments

n00b13 Over a year ago

Thanks a lot for the answers. Much appreciated. I went with this solution in the end as the array may change to an associative array later.

Tomas Creemers Over a year ago

@n00b13: note that this solution (also) will not work if the array is associative: the foreach will overwrite $id.

Alexander Støver · Accepted Answer · 2013-08-15 12:26:47Z

0

foreach ($rows as $id => $row) {
  if ($id % 4 == 0) {
    // do something
  }
}

answered Aug 15, 2013 at 12:26

Alexander Støver

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Comments

Mahmood Rehman · Accepted Answer · 2013-08-15 12:29:53Z

0

Try something like this :

   <?php
                 $rows = array("2","3","5","6","8","9","0","3","5");
                 $i =0;
                  foreach ($rows as $id => $row): 
                  if($i % 4 == 0)
                  { echo "</ul><ul>";}
                  $i++;
                  ?>
                        <li><?php print $row ?></li>
                <?php endforeach; ?>
            </ul>

answered Aug 15, 2013 at 12:29

Mahmood Rehman

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Comments

n00b13 · Accepted Answer · 2013-08-16 08:11:43Z

In the end this is the solution I went for. This solution includes a statement to close the tags if there are a number of items not divisible by four, for example if there are five items in total. Thanks to everyone, I couldn't have done it without your input.

            $count;
            foreach ($rows as $id => $row)
                {
                    if ($count % 4 == 0)
                    {           
                        echo "<ul>";
                    }

                    echo '<li>' . $row . '</li>';

                    if ($count % 4 == 3 || $count == count($rows)-1)
                    {
                        echo "</ul>";
                    }
                    $count++;
                }

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