Hidding a column from a table - php

Question

I have this table with checkboxes, my idea is to be able to delete the rows where the checkboxes have been checked.
With the help of Charaf jra, I was able to POST the uniqID of the row so I could DELETE it using mysql query on my delete.php page.
My problem now is in order to pass the uniqID I had to add it on the table, which doesnt look good. I mean, I dont want the ID number showing on the table. I have been reading on how to hide it, but none of the explanations I have read apply to my case.
Here is my code updated:
if ($arch = $pdo->prepare("SELECT name, age, uniqID FROM table WHERE id = ?")) {
$arch ->execute(array($id));
$data = $arch->fetchAll();
echo '<div class="coolTable" ><form method="post" action="delete.php"><table><tr><td>Name</td><td>Age</td><td>Check</td></tr>';
foreach ($data as $row){
echo '<tr>';
foreach ($row as $col){
$col=nl2br($col);
echo '<td>'.$col.'</td>';
}
echo '<td><input type="checkbox" name="checkbox[]" value="'.$col.'" id="checkbox"></td>'; //this captures the column ID so I can pass it through the `POST`
echo '</tr>';
}
echo '</table><input type="submit" value="Delete Selected"/></form></div>';
}
This works perfect. The only big problem is that I dont want the uniqID to be shown. Can anyone tell me how to hide it from the table and still be able to pass it through the POST?

Answer 1

if ($arch = $pdo->prepare("SELECT name, age, uniqID FROM table WHERE id = ?")) {
$arch ->execute(array($id));
$data = $arch->fetchAll();
echo '<div class="coolTable" ><form method="post" action="delete.php"><table><tr><td>Name</td><td>Age</td><td>Check</td></tr>';
foreach ($data as $row){
echo '<tr>';
echo '<td>'.nl2br($row['name']).'</td>';
echo '<td>'.nl2br($row['age']).'</td>';
echo '<td><input type="checkbox" name="checkbox[]" value="'.nl2br($row['uniqID']).'" id="checkbox"></td>'; //this captures the column ID so I can pass it through the `POST`
echo '</tr>';
}
echo '</table><input type="submit" value="Delete Selected"/></form></div>';
}
PHP arrays can be used as dictionaries (if you've seen python or ruby). PDO returns an array of pairs key-value, where your key is the name your column and the value, the value of your column. So you can access those values via
iteration (foreach)
iteration (index - direct access if you know the position of your element inside the array)
key (direct access without knowing the position of your element inside the array)

Answer 2

Assuming you want to loop the columns in each row, as opposed to manually echoing them as alkis suggests, get the results as an associative array and then unset $row['uniqID'];
if ($arch = $pdo->prepare("SELECT name, age, uniqID FROM table WHERE id = ?")) {
$arch ->execute(array($id));
$data = $arch->fetch(PDO::FETCH_ASSOC);
echo '<div class="coolTable" ><form method="post" action="delete.php"><table><tr><td>Name</td><td>Age</td><td>Check</td></tr>';
foreach ($data as $row){
if ( isset($row['uniqID']) ) {
unset($row['uniqID']);
}
echo '<tr>';
foreach ($row as $col){
$col = nl2br($col);
echo '<td>'.$col.'</td>';
}
echo '<td><input type="checkbox" name="checkbox[]" value="'.$col.'" id="checkbox"></td>'; //this captures the column ID so I can pass it through the `POST`
echo '</tr>';
}
echo '</table><input type="submit" value="Delete Selected"/></form></div>';
}