Only first ID from table is displayed - php

Question

I have a database table as followed:
Using the code below, I display all rows in the text column:
$stmt = $con->query("SELECT * FROM test");
if($stmt->rowCount() > 0) {
$replyid = $row['ID'];
while($row = $stmt->fetch()) {
echo'
'.$row['text'].'
<form method="post">
<input name="testing" type="submit">
</form>
';
}
}
When the user clicks the submit button, the code below is supposed to display the ID corresponding to the column text. For example:
If the submit button next to 'hello' was clicked, the number 2 should display.
If the submit button next to 'adios' was clicked, the number 4 should display.
if(isset($_POST['testing'])) {
echo $replyid;
}
My problem is that only the ID from the first row in the table is displaying. If the user clicks the submit button next to 'bonjour', the number 1 will display (instead of 3!)

Answer 1

You must add hidden field to form with your value:
echo'
'.$row['text'].'
<form method="post">
<input name="replyid" type="hidden" value="'.$row['ID'].'">
<input name="testing" type="submit">
</form>
';
and then display that value from form
if(isset($_POST['testing'])) {
echo $_POST['replyid'];
}

Answer 2

First and foremost, I'd always suggest using a PDO method rather than MySQL/MySQLi
class Connection {
public function __construct() {
return new PDO('mysql:host=X;dbname=X', 'user', 'pass');
}
}
$Con = new Connection;
$Con->Prepare("SELECT * FROM test");
$Con->execute();
foreach($Con->FetchAll() as $row) {
echo $row['id'] . '\n';
}
The above section of code shows the ease of basic SQL statements, for future notice you can also use the PDO bindValue() for secure Queries.
[...]
$Con->Prepare("SELECT * FROM test WHERE id = :paramhere");
$Con->bindValue(":paramhere", 1);
[...]
I hope this helped, you can find more on PDO and SQL from the below links:
PDO Manual
SQL Select Where Clause
EDIT: In addition to best practice, you should use conditional statements where using HTML.
<?php foreach($Con->FetchAll() as $row): ?>
<div class="example">
This is HTML, Your ID is: <?php echo $row['id']; ?>
</div>
<?php endforeach; ?>

Answer 3

try like this, but I'm actually not very sure that this is what you want.
$stmt = $con->query("SELECT * FROM test");
if($stmt->rowCount() > 0) {
while($row = $stmt->fetch()) {
echo'
'.$row['text'].'
<form method="post">
<input name="testing" type="submit" value="'.$row['ID'].'">
</form>
';
}
}
and your echo command should look like this
if(isset($_POST['testing'])) {
echo $_POST['testing'];
}