I'm trying to break a PHP array into 3 columns (has to be columns, not rows) so it would look something like this:
Item 1 Item 2 Item 3
Item 4 Item 5 Item 6
Item 7 Item 8 Item 9
Item 10................
The best approach I can think of would be to break the main array into 3 arrays, 1 for each column although I can't work out the best approach to do this - more specifically the criteria I could use to generate the 3 arrays.
I would use this:
$i = 1
foreach ($array as $value) {
if ($i % 3 === 0) {
echo $value . '<br />';
}
$i++;
}
Or when using html table:
<table>
<tr>
<?php
$i = 0;
foreach ($array as $value) {
if ($i % 3 === 0) {
echo '</tr><tr>';
}
echo "<td>" . $value . "</td>";
$i++;
}
?>
</tr>
</table>
You can use array_slice to extract a section of an array, so:
$newArray = array();
for($i = 0; $i < count($oldArray); $i += 3) {
$newArray[] = array_slice($oldArray, $i, 3);
}
Edit: As @deceze points out, this does the same thing as array_chunk. (I knew PHP would have something built-in.) So use that instead!
When considering your question topic it's first impression is"Column" and I think you needed to focus on visual aspects. "How to display your array as three columns" May be my idea is wrong. But I think you wanted that. Just check following example if my thought is correct.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<?php
$arr = array(1,2,3,4,5,6,7,8,9,10);
?>
<body>
<div style="width:300px">
<ul>
<?php foreach($arr as $itm) {?>
<li style="list-style:none;float:left;width:80px;"><span style="font-size:36px;"><?php echo $itm;?></span></li>
<?php }?>
</ul>
</div>
</body>
</html>
Having just thought about it, this should achieve what I want - whether it's the fastest method though, I'm not sure:
$array = (1,2,3,4,5,6,7,8,9....)
$column1 = array();
$i = 2;
foreach($array as $value) {
if ($i++ % 3 == 0) {
$column1[] = $value;
}
}
$column2 = array();
$i = 1;
foreach($array as $value) {
if ($i++ % 3 == 0) {
$column2[] = $value;
}
}
$column3 = array();
$i = 0;
foreach($array as $value) {
if ($i++ % 3 == 0) {
$column3[] = $value;
}
}
EDIT: The same as above although using a single foreach loop:
$array = (1,2,3,4,5,6,7,8,9....)
$column1 = array();
$column2 = array();
$column3 = array();
$i = 2;
$j = 1;
$k = 0;
foreach($array as $value) {
if ($i++ % 3 == 0) {
$column1[] = $value;
}
if ($j++ % 3 == 0) {
$column2[] = $value;
}
if ($k++ % 3 == 0) {
$column3[] = $value;
}
}
$data = array();
$columns = 3;
echo "<table><tr>";
for($i = 0; $i < count($data); $i++)
{
if($i%$columns == 0)
echo "</tr><tr>";
echo "<td>".$data[i$]."</td>";
}
echo "</tr></table>";
There you go, it just outputs another row when you get to your column count. You might need to add some logic when the data isnt a multiple of 3.
Using array_chunk you can split array :
$rows = array_chunk($yourArray, '3'); // 3 = column count;
foreach ($rows as $columns) {
echo "<div class='row'>";
foreach ($columns as $column) {
echo "<div class='column'>$column</div>";
}
echo "</div>";
}
header('Content-Type: text/plain');
echo '<table>';
$colNum = 3;
$regNum = 10;
for ($i = 1; $i <= $regNum; $i++) {
if (($i % $colNum) == 1) {
echo "\n\t".'<tr>';
}
echo "\n\t\t".'<td>'. $i .'</td>';
if (($i % $colNum) == 0 or $regNum <= $i) {
echo "\n\t".'</tr>';
}
}
echo "\n".'</table>';
