使用一个php查询迭代两行三列的html表

Question

I have a database table and that table has 6 rows. What I want is to display that 6 rows in a html page using a 3 column and 2 row table.

I know how to work with php arrays and while loops. My problem is how to limit the array to put 3 items in the first row and put the other 3 in the next row.

this is what i have tried but didn't work

<div id="maincontent">
  <!-- class one -->
      <?php 
        $getSection = getSection();
        $i=0;
        while($allSection = mysql_fetch_array($getSection)){
      ?>
      <div class="subconent">
<table width="937" border="0">
  <tr>
    <td>
        <div class="sub_image">
            <a href="section.php?id=<?php echo urlencode($allSection['id']); ?>"><img src="admin/uploads/fron_sect/<?php echo $allSection['image']; ?>" width="134" height="120" border="0" alt="HNA" class="PopBoxImageLink"  onmouseover="PopEx(this,-50,-25,205,186,20,null);" onclick="window.location='http://localhost/hants/section.php?id=<?php echo urlencode($allSection['id']); ?>'" /></a>
        </div>
            <div class="cont_txt">
              <h3><?php echo $allSection['name_full']; ?></h3>
                <p><?php echo substr($allSection['description'],0,140) . ""; ?></p>
                <br />
              <a href="section.php?id=<?php echo urlencode($allSection['id']); $i++; ?>"><img src="images/read_more.jpg" alt="Read More" width="89" height="25" border="0" /></a>
            </div>
    </td>
  </tr>
</table>
</div>
<?php 
if($i==4) { ?>
<table width="937" border="0">
<tr>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td></tr>
<tr><div class="sub_image">
            <a href="section.php?id=<?php echo urlencode($allSection['id']); ?>"><img src="admin/uploads/fron_sect/<?php echo $allSection['image']; ?>" width="134" height="120" border="0" alt="HNA" class="PopBoxImageLink"  onmouseover="PopEx(this,-50,-25,205,186,20,null);" onclick="window.location='http://localhost/hants/section.php?id=<?php echo urlencode($allSection['id']); ?>'" /></a>
        </div>
            <div class="cont_txt">
              <h3><?php echo $allSection['name_full']; ?></h3>
                <p><?php echo substr($allSection['description'],0,140) . ""; ?></p>
                <br />
              <a href="section.php?id=<?php echo urlencode($allSection['id']); ?>"><img src="images/read_more.jpg" alt="Read More" width="89" height="25" border="0" /></a>
            </div><td>
<?php   }
} ?>
  </div>

Answer 1

Use modulo operator (%):

http://www.devchunks.com/web-development/using-the-php-modulus-operator/

something like this:

<table>

<?php

$i = 0;
while ( $row = mysql_fetch_array($result) ){
    if ($i % 3 == 0){
        echo '<tr>';
    }
    echo '<td>'.$row['column_name'].'</td>';
    if ($i % 3 == 2){
        echo '</tr>';
    }
    $i++; 
}

//here is a check in case you don't have multiple of 3 rows
if ($i % 3 != 0){
    echo '</tr>';
}

?>

</table>

Answer 2

At its base, you'll need something like this:

<table>
<tr>

<?

$count = 0;
foreach ($row) {
    echo "<td>" . $row["value"] ."</td>";
    $count++;

    if (($count % 3) == 0) && ($count > 0) {
        echo ("</tr><tr>");
    }
}

?>

</tr>
</table>

Start printing out the header of your table, and then begin iterating through the dataset. Keep track of how many you've printed out, and if this is the third one, print the HTML to finish this row and start the next one. (I've used % , so it'll wrap on every third entry, not just the first one)

Answer 3

Well, you could correctly fetch those informations in your sql-query ( just one example that could fit http://en.wikibooks.org/wiki/MySQL/Pivot_table ).

Or simply fetch everything into PHP arrays.

Oldschool: mysql_query() and while( $row = mysql_fetch_array() ) Newchool: PDO ( http://de.php.net/manual/en/book.pdo.php )

Answer 4

Awesome! Thanks a lot. It works for me, Zend. You can try something like this.

   <table width="1024px" border="0" cellspacing="2" cellpadding="2">  
  <?php
      $i = 0;
      foreach ($this->rows as $row )
      {
          $img = IMAGE_PATH . '/' . 'gallery/' . $row->gly_thumbnail;
          if ($i % 3 == 0)
          {
              echo '<tr>';
          }
  ?>
  <td align="center">
    <img src="<?php echo $img; ?>" width="300" height="215"><br/>
    <?php echo $row->gly_title; ?>
  </td>
  <?php        
          if ($i % 3 == 2)
          {
              echo '</tr>';
          }
          $i++; 
      }

      //here is a check in case you don't have multiple of 3 rows
      if ($i % 3 != 0)
      {
          echo '</tr>';
      }

  ?>
</table>