问题
This php code shows me the content of a directory on my website:
<?php
$dir = opendir(getcwd());
?>
<body>
<table>
<tbody>
<tr>
<?php
while (($file = readdir($dir)) !== false) {
{
echo "<td>". $file ."</td>";
}
}
closedir($dir);
?>
</tr>
</tbody>
</table>
</body>
It puts the results in a table.
The problem is that the PHP code generates a <td> tag and store the results in it. So the final table has one <tr> and as many <td> tags as there are results.
What I want to have is a table with 3 columns (3 td) per each line (tr tag).
Is there a way to make the table dynamic and for each third <td> tag turns to be a <tr> tag
so the results look like this: (click here)
Instead of looking like this: (click here)
回答1:
try this:
<?php
$dir = opendir(getcwd());
?>
<body>
<table>
<tbody>
<?php
$n = 0;
while (($file = readdir($dir)) !== false) {
{
if($n%3 == 0){echo "<tr>";}
echo "<td>". $file ."</td>";
$n++;
}
}
closedir($dir);
?>
</tbody>
回答2:
you can use modulus to keep track of where you are in the loop. Then, when you've hit a multiplication of 3, you restart the table row:
<?php
$dir = opendir(getcwd());
?>
<body>
<table>
<tbody>
<tr>
<?php
$counter = 0;
while (($file = readdir($dir)) !== false) {
{
if($counter % 3 == 0 && $counter != 0) echo "</tr><tr>";
echo "<td>". $file ."</td>";
$counter++;
}
}
closedir($dir);
?>
</tr>
</tbody>
</table>
</body>
来源：https://stackoverflow.com/questions/12799053/dynamic-table-colons-depend-on-the-content-of-the-table