Passing multiple instruments from database table to getQuote function not working

akshitahuja

<?php
	include "../kiteconnect.php";

	$kite = new KiteConnect("xxx");

	$kite->setAccessToken('xxx');

	echo "Quote: \n";
	$conn = mysqli_connect('localhost', 'root', '', 'stocks');

	$qr = mysqli_query($conn, "SELECT * FROM instruments LIMIT 500");
	$ins = '';
	while ($rs = mysqli_fetch_assoc($qr)) {
		if ($ins == '') {
			$ins = '"NSE:'.$rs['name'].'"';
		}
		else {
			$ins .= ', "NSE:'.$rs['name'].'"';
		}
	}

	print_r($kite->getQuote([$ins]));
?>

Here is my code. When I am passing multiple instruments like:

print_r($kite->getQuote(["NSE:INFY", '"NSE:3IINFOTECH"]));

it works fine, but the same thing when i do by fetching instruments from database it returns empty array.

Where i am doing wrong