2个HTML表列中的SQL查询回显循环

Question

Is it possible to echo database data into 2 html table colums like a loop? I can't make it work. Or do I need a different approach?

I need this to echo like a loop into 2 columns <?php echo $row['data']; ?> <?php echo $row['data']; ?>

This is what I have:

HTML Table
Col 1    |    Col 2
1. aaaa
2. bbbb
3. cccc
4. dddd
5. eeee
6. ffff
7. gggg
8. hhhh
9. iiii
10. jjjj

This is what I want:

HTML Table
Col 1         |     Col 2
1. aaaa             6. ffff
2. bbbb             7. gggg
3. cccc             8. hhhh
4. dddd             9. iiii
5. eeee             10. jjjj

Answer 1

It's absolutely possible.

All you need to do is echo out alternating classes, which can be done by making use of a counter which increments as you loop over the rows. For example:

<?php

$count = 0;
foreach ($rows as $row) {
   $count++; // Increment a counter
   if ($count % 2 == 0 && $count != count($rows)) {
     echo "<div class='odd'></div>";
   }
   else {
     echo "<div class='even'></div>";
   }
}

?>

And from here you can use CSS to style the rows into two columns:

.odd, .even {
  width: 50%;
  float: left;
}

Or if you want to do this with pure CSS, you can make use of flexbox. All you need is display: flex and flex-wrap: wrap on the parent, along with flex: 50% on the children:

 .container { display: flex; flex-wrap: wrap; } .container div { flex: 50%; } 

 <div class="container"> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div>5</div> <div>6</div> <div>7</div> <div>8</div> <div>9</div> <div>10</div> </div> 

Which will also allow you to fill the left-hand column first if you want, by making use of flex-flow: column wrap and a fixed height :

 .container { display: flex; flex-flow: column wrap; height: 100px; } 

 <div class="container"> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div>5</div> <div>6</div> <div>7</div> <div>8</div> <div>9</div> <div>10</div> </div> 

Answer 2

Here code is for creating dynamic column and data, that might any length,

Splitting into 5 groups and make it as column value. Worked output is below

<?php
 //$row=array(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20);
 $row=array('aaa','bbbb','cccc','ddddd','eeeee','ffff','gggg','hhhh','iiii','jjjjj','kkkk','llll','mmmm','nnnnn','ooooo');
?>
<table style="width:50%">
<?php
echo'<tr>';
$i=0;
foreach ($row as $key => $value) {
    if(($key)%5==0)
    {
        $i++;
        echo'<th>Col'.$i.'</th>';
    }
    $a[$i][]=$value;        
}
echo'</tr>';
$forcount=count($a);
$innerforcount=count($a[1]);
for ($j=0; $j <$innerforcount ; $j++) {
    echo'<tr>';
    for($i=1;$i<=$forcount;$i++)
        echo'<td>'.$a[$i][$j].'</td>';
    echo"</tr>";
}
?>
</table>

//Output

 Col1   Col2    Col3    Col4
1   6   11  16
2   7   12  17
3   8   13  18
4   9   14  19
5   10  15  20

//Sample out with text

 Col1   Col2    Col3
aaa     ffff    kkkk
bbbb    gggg    llll
cccc    hhhh    mmmm
ddddd   iiii    nnnnn
eeeee   jjjjj   ooooo