How to automatically increment checkbox id in a table - php

Question

I'm using this code to get all data from database and display it in a table:
class Product
{
private $conn;
private $id;
private $name;
private $description;
private $price;
private $category_id;
private $category_name;
private $created;
public function __construct($db)
{
$this->conn = $db;
}
public function readAll()
{
$stmt = $this->conn->prepare('SELECT name, description, price, CategoryID, created FROM products');
$stmt->execute();
echo "<table class=\"highlight responsive-table\">
<thead>
<tr>
<th data-field=\"empty\"> </th>
<th data-field=\"name\">Name</th>
<th data-field=\"description\">Description</th>
<th data-field=\"price\">Price</th>
<th data-field=\"category\">Category</th>
<th data-field=\"action\">Action</th>
</tr>
</thead>";
while ($result = $stmt->fetch(PDO::FETCH_ASSOC)) {
$n = $result['name'];
$d = $result['description'];
$p = $result['price'];
$ca = $result['CategoryID'];
$c = $result['created'];
echo "<tbody>
<tr>
<td style=\"width:10%;\">
<input type=\"checkbox\" id=\"checkbox\" />
<label for=\"checkbox\"></label>
</td>
<td style=\"width:15%;\">" .$n. "</td>
<td style=\"width:30%;\">" . $d. "</td>
<td style=\"width:10%;\">" ."$".$p. "</td>
<td style=\"width:15%;\">" . $ca. "</td>
<td style=\"width:20%;\">
<a class=\"waves-effect waves-light btn\"><i class=\"material-icons\">mode_edit</i></a>
<a class=\"waves-effect waves-light btn\"><i class=\"material-icons\">delete</i></a>
</td>";
}
echo "</tbody> </table>";
}
}
It's working, but in the 1st column I want to have a checkbox so I can mark records I want to delete / edit, but for now, whichever checkbox I click, only the 1st one get checked. How can I automatically increment checkbox id?

Answer 1

I would recommend using the id field from the products table. If it doesn't have one, I would add it.
Then in your html change the checkbox line to:
<input type=\"checkbox\" id=\"checkbox".$id."\" name=\"delete_product\" value=\"".$id".\" />
<label for=\"checkbox".$id."\"></label>
I added name and value in case you are submitting the form, you can get that data in the POST if you end up using a form.

Answer 2

use a variable $i, initialize it with 1 before while loop and
inside your loop,increment it
replace your checkbox code like
<input type=\"checkbox\" id=\"checkbox_$i\" />
<label for=\"checkbox_$i\"></label>
$i++;

Answer 3

Try using a counting variable like this:
$i = 0;
while ($result = $stmt->fetch(PDO::FETCH_ASSOC)) {
$n = $result['name'];
$d = $result['description'];
$p = $result['price'];
$ca = $result['CategoryID'];
$c = $result['created'];
echo "<tbody>
<tr>
<td style=\"width:10%;\">
<input type=\"checkbox\" id=\"checkbox".$i."\" />
<label for=\"checkbox".$i."\"></label>
</td>
<td style=\"width:15%;\">" .$n. "</td>
<td style=\"width:30%;\">" . $d. "</td>
<td style=\"width:10%;\">" ."$".$p. "</td>
<td style=\"width:15%;\">" . $ca. "</td>
<td style=\"width:20%;\">
<a class=\"waves-effect waves-light btn\"><i class=\"material-icons\">mode_edit</i></a>
<a class=\"waves-effect waves-light btn\"><i class=\"material-icons\">delete</i></a>
</td>";
$i++;
}

Answer 4

Add id column to your sql query. Then modify your first column in table to
<input type=\"checkbox\" id=\"checkbox\" . $result['id'] . " name=\"id[" . $result['id'] . "]\"/>
<label for=\"checkbox" . $result['id'] . "\"></label>
In Controller you will have access to selected ids using for example $_POST['id']