PHP Sorting files in a table - php

Question

Currently I have a table order by
A B C D
E F G H
but I would like to order the table by
A E
B F
C G
D H
Code:
for($i=0;$i<=count($aFiles);$i++)
{
if($i%5==0)
{
echo "</tr><tr>";
}
echo '<td><a>'.$aFiles[$i].'</a></td>';
}
echo '</tr>';
echo '</table>';
Files are already sorted a-z in $aFiles.

Answer 1

$aFiles = array('a','b','c','d', 'e', 'f', 'g');
$iColumnNumber = 2;
$iRowMaxNumber = ceil(count($aFiles) / $iColumnNumber);
$iTableRow = 0;
$iTableColumns = 1;
$aTableRows = array();
// make array with table cells
foreach ($aFiles as $sFile)
{
if ($iTableRow == $iRowMaxNumber)
{
$iTableRow = 0;
$iTableColumns++;
}
if (!isset($aTableRows[$iTableRow]))
{
$aTableRows[$iTableRow] = array();
}
$aTableRows[$iTableRow][] = '<td>' . $sFile . '</td>';
$iTableRow++;
}
// if there is odd number of elements
// we should add empty td elements
for ($iTableRow; $iTableRow < $iRowMaxNumber; $iTableRow++)
{
if (count($aTableRows[$iTableRow]) < $iTableColumns)
{
$aTableRows[$iTableRow][] ='<td>empty</td>';
}
}
// display table
echo '<table>';
foreach ($aTableRows as $aTableRow)
{
echo '<tr>';
echo implode('', $aTableRow);
echo '</tr>';
}
echo '</table>';

Answer 2

Simple Approach using HTML trick:
echo '<div class="tbl_group"><table>';
for($i=0;$i<=count($aFiles / 2);$i++)
{
echo '<tr>';
echo '<td><a>'.$aFiles[$i].'</a></td>';
echo '</tr>';
}
echo '</tr>';
echo '</table></div>';
echo '<div class="tbl_group"><table>';
for($i=$aFiles / 2;$i<=count($aFiles);$i++)
{
echo '<tr>';
echo '<td><a>'.$aFiles[$i].'</a></td>';
echo '</tr>';
}
echo '</tr>';
echo '</table></div>';
For the CSS:
.tbl_group {
float: left;
}
With this approach, 2 tables are built side-by-side. float: left CSS will auto adjust the position of the tables.

Answer 3

Assuming you know the number of rows you want, you don't need to resort anything, just add some logic in your loop that generates the <td>s :
$size = count($aFiles);
echo '<table><tr>';
for($i=0;$i<=ceil($size/2);$i++) {
if($i%2==0) {
echo '<td><a>'.$aFiles[$i].'</a></td>';
echo "</tr><tr>";
} else {
if(isset($aFiles[$i+floor($size/2)])) {
echo '<td><a>'.$aFiles[$i+floor($size/2)].'</a></td>';
}
}
}
echo '</tr></table>';

Answer 4

Example bellow also works with associative array + arrays with odd elements.
Code for associative AND indexed array :
$aFiles = ['test'=>"A","B",'c'=>"C","D","E","F",'g'=>"G","H",'iii'=>"I"];
$aKeys = array_keys($aFiles);
$aRows = ceil(count($aFiles) / 2);
echo '<table>';
for($i=0; $i < $aRows; $i++) {
echo
'<tr>' .
' <td>' . $aFiles[$aKeys[$i]] . '</td>' .
' <td>' . (isset($aKeys[$i+$aRows]) ? $aFiles[$aKeys[$i+$aRows]] : 'empty') . '</td>' .
'</tr>';
}
echo '</table>';
Code for ONLY indexed array :
$aFiles = ["A","B","C","D","E","F","G","H","I"];
$aRows = ceil(count($aFiles) / 2);
echo "<table>";
for($i=0; $i < $aRows; $i++) {
echo
"<tr>" .
" <td>" . $aFiles[$i] . "</td>" .
" <td>" . (isset($aFiles[$i+$aRows]) ? $aFiles[$i+$aRows] : "empty") . "</td>" .
"</tr>";
}
echo "</table>";
Output for both examples is identical :
<table>
<tr>
<td>A</td>
<td>F</td>
</tr>
<tr>
<td>B</td>
<td>G</td>
</tr>
<tr>
<td>C</td>
<td>H</td>
</tr>
<tr>
<td>D</td>
<td>I</td>
</tr>
<tr>
<td>E</td>
<td>empty</td>
</tr>
</table>

Answer 5

Not optimized, but this should more or less work:
$aFiles = array ("A","B","C","D","E","F","G","H","I","J","K","L","M","N",);
$rows = 4;
$columns = floor((count($aFiles)/$rows))+1;
echo '<table>';
for ($i=0;$i<$rows;$i++) {
echo '<tr>';
for ($j=0;$j<$columns;$j++) {
echo '<td>';
if (isset($aFiles[$i+$j*$rows]))
echo $aFiles[$i+$j*$rows];
else
echo " ";
echo '</td>';
}
echo '</tr>';
}
echo '</table>';
You can change the number of rows if you want.

Answer 6

Try this one. Assume that your $aFiles contains a-z alphabetically.
for ($i = 0; $i < count($aFiles/2); $i++){
echo '<tr><td><a>'.$aFiles[$i].'</a><td><td><a>'.$aFiles[$i+13].'</a><td></tr>'
}