PHP - Randomized data displayed in text box when Submit is clicked - php

Question

Hello I have a database and its data is this please see this image
I need a solution to this problem, the solution is i need the data to be change and not repeating, so when i input a value that is written on the database the displayed value on the textbox will not REPEAT and Change everytime i input the same value.
<form action="" method="POST">
<div class="row col-md-4">
<label>Amount</label>
<input type="text" name="id" class="form-control validate">
<br>
<input type="submit" class="form-control btn-warning" name="search" value="Search Data"></input><br>
//HERE IS WHERE I SUBMIT THE DATA RIGHT NOW IT IS NOT RANDOMIZED WHEN I SUBMIT AGAIN THE SAME VALUE APPEARS
<?php
$connection = mysqli_connect("localhost","root","");
$db = mysqli_select_db($connection, 'qrproject');
if(isset($_POST['search'])){
$id = $_POST['id'];
$query = "SELECT * FROM scratch_cards WHERE amount='$id' ";
$query_run = mysqli_query($connection, $query);
while($row = mysqli_fetch_array($query_run)) {
?>
<form action="" method="POST">
<input type="text" name="code" value="<?php echo $row['code'] ?>" class="form-control validate" id="mapo">
<input type="text" name="pin" value="<?php echo $row['pin'] ?>" class="form-control validate" id="mact">
<input type="text" name="status" value="<?php echo $row['status'] ?>" class="validate form-control" id="soluong">
<input type="date" name="card_expiration" value="<?php echo $row['card_expiration'] ?>" class="validate form-control" id="cardex">
<input type="number" name="card_validity" value="<?php echo $row['card_validity'] ?>" class="validate form-control" id="cardval">
</form>
<?php
}
}
?>
</form>

Answer 1

Maybe as per your comment, you need unique records, so you can use DISTINCT in your query so by giving DISTINCT to any column, you won't get repeated records.
Here in your case:
SELECT DISTINCT id, amount FROM scratch_cards WHERE amount='$id'
Maybe this can help you to get unique records