PHP - 使用某种循环来询问另一种形式

Question

I've got this so far:

$result=mysqli_query($conn,$sql_query);
$in = mysqli_fetch_array($result)[0];
?>
<table>
    <tr>
    <th>ID:</th>
    <th>Item:</th>
    <th>Quantity:</th>
    <th>Sell</th>
    </tr>
<?php
$ID = 0;


foreach (explode(";", $in) as $element) {
        $ID = $ID + 1;
        $element = trim($element);
        if (strpos($element, " ") !== false ) {
                list($car, $number) = explode(" ", $element);
                $Form = "<form method = 'post'> <br> <input type ='submit' name = '$ID' value = 'Sell!' <br> </form>";
                ?>
                <tr>
                    <td><?php echo $ID; ?></td>
                    <td><?php echo $car; ?></td>
                    <td><?php echo $number; ?></td>
                    <td><?php echo $Form; ?></td>
                </tr>
                <?php


        }

}

echo "</table>";

What I was wondering was two things: 1. How can I target every single button as it could range from 1 to 100+ I presume it would use some sort of loop? Not sure how it would work though

Answer 1

First, you've got a typo, you didn't close the button tag here:

$Form = "<form method = 'post'> <br> <input type ='submit' name = '$ID' value = 'Sell!' /><br> </form>";
// here .................................................................................^

Second, as I mentioned in the comments, clicking is going to handled by Javascript as PHP runs on the server and has nothing to do with the user's actions.

You can do that with jQuery pretty easily, for example:

$("input[type='submit']").click(function(e){
    e.preventDefault();
    alert("do stuff!");
});

There are tonnes of tutorials on event handling with Javascript, it's a bit too broad to answer on Stack Overflow.