PHP AND FOR LOOP - php

Question

I am trying to use for loops to create a table which dynamically returns something like this: Note how the td content have been arranged
<table>
<tr>
<td>1</td>
<td>3</td>
<td>5</td>
<td>7</td>
<td>9</td>
</tr>
<tr>
<td>2</td>
<td>4</td>
<td>6</td>
<td>8</td>
<td>10</td>
</tr>
</table>
among What I have tried so far is
$row=2;
$col=20;
$x=0;
echo '<table>';
for($i=0;$i<$row;$i++){
echo '<tr>';
for($k=0;$k<$col;$k++)
{
echo '<td>'.echo $x+=1.'</td>';
}
echo '</tr>';
}
In this case I get something different and which is not what I want.
<table>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
</tr>
<tr>
<td>6</td>
<td>7</td>
<td>8</td>
<td>9</td>
<td>10</td>
</tr>
</table>
Kindly someone help me map this.Thanks

Answer 1

<?php
# how high to count
$count = 10;
# how many rows in the table
$rows = 2;
# figure out how many columns
$columns = ceil($count/$rows);
# could also go the other way and declare there to be 5 columns and then
# divide to get the rows, but since you're counting down the columns,
# I thought this made more sense. Either way.
?><table><?php
for ($i=0; $i<$rows; ++$i) {
?><tr><?php
for ($j=0; $j<$columns; ++$j) {
# calculate which number to show in column $j of row $i. Each column adds
# $rows numbers to the total, while each row just adds one more. And we
# want to start at 1 instead of 0.
$n = $j * $rows + $i + 1;
?><td><?= $n ?></td><?php
}
?></tr><?php
}
?></table>

Answer 2

$total_count = 10;
$total_rows = 2;
$table = array();
//building table array
for($i=1;$i<=$total_count;$i++) {
$row = $i % $total_rows;
$row = $row == 0 ? $total_rows : $row;
$table[$row][] = $i;
}
//generate table based on array
echo "<table>";
for($row=1;$row<=$total_rows;$row++) {
echo "<tr>";
foreach($table[$row] as $cell) {
echo "<td>".$cell."</td>";
}
echo "</tr>";
}
echo "</table>";

Answer 3

This isnt as complicated as people are making it seem
Start the inner loop at whatever row you're currently on and add 2 each time.
<?php
$rows=2;
$cols=10;
?>
<table>
<?php for($i=1;$i<=$rows;$i++): ?>
<tr>
<?php for($k=$i;$k<$cols;$k+=2): ?>
<td><?php echo $k ?></td>
<?php endfor; ?>
</tr>
<?php endfor; ?>
</table>
Id probably use range and foreach though
<?php
$rows=2;
$cols=10;
?>
<table>
<?php foreach( range( 1, $rows ) as $row ): ?>
<tr>
<?php foreach( range( $row, $cols, 2 ) as $col ): ?>
<td><?php echo $col ?></td>
<?php endforeach; ?>
</tr>
<?php endforeach; ?>
</table>

Answer 4

This approach will split the data itself
function array_chunk_vertical($array = null,$cols = 3, $pad = array(null))
{
if (is_array($array) == true and !empty($array))
{
$rows = ceil(count($array)/$cols);
$array = array_chunk($array,$rows);
if (count($array) < $cols)
{
$array = array_pad($array,$cols,$pad);
}
foreach($array as $key => $value)
{
$array[$key] = array_pad($value,$rows,null);
}
foreach($array as $key => $value)
{
foreach($value as $sub_key => $sub_value)
{
$output[$sub_key][$key] = $sub_value;
}
}
return $output;
}
return $array;
}
$data = array(1,2,3,4,5,6,7,8,9,10,11);
echo '<table border="1">';
foreach(array_chunk_vertical($data,ceil(count($data)/2)) as $row)
{
echo '<tr>';
foreach($row as $col)
{
echo '<td>' . $col . '</td>';
}
echo '</tr>';
}
echo '</table>';