<?php
$con = mysqli_connect("localhost","root","","login_d");

$Show2 = mysqli_query($con, "SELECT * FROM `login_tbl`");
while($r = mysqli_fetch_array($Show2)):
$c_idw = $r['c_id'];

 $test = array(
    "$c_idw" => "$c_idw"

);
foreach($test as $key => $value){
    echo $key . " : " . $value . "<br>";
}
endwhile;






?>