PHP - Search Forms With Min Price And Max Price

the php web video script that I'm trying to modify allows Users to purchase videos successfully, however, the video price that is reflected in the db ('u_paid_videos') table (where transaction info is stored) appears to show the default video price (video_play_price from the 'config' db table) every time, instead of the accurate video price. I'm not sure if this code needs to be tweaked so that the actual price will show in the 'video_play_price' column (in 'u_paid_videos' table):

// get cost video // get the default video price, to use if there is no per video play price
	$db->where('name', 'video_play_price');
	$db_cost = $db->getOne('config');
	$video_cost = (float)$db_cost->value;

	// the number of submitted videos - used to determine if all records were inserted
	$count_video = count($id_array);
	$user_id = $user->id;

	$wallet = (float)str_replace(',', '', $user->wallet);
	$balance = (float)str_replace(',', '', $user->balance);

	// add up the video prices
	$amount = 0;
	foreach ($id_array as $id) {

	$video_id = (int)PT_Secure($id);

	// get video data
	$video = $db->where('id', $id)->getOne(T_VIDEOS);

	// add the video play price if any, or the default price
	$amount += $video->video_play_price?$video->video_play_price:$video_cost;
	}

	// determine if the user has enough credits
	if( ($wallet >= $amount) OR ($balance + $wallet >= $amount) ) {

		$db->startTransaction();

		$inserted_records = 0;
		foreach ($id_array as $id){

			$video_id = (int)PT_Secure($id);

			// get video data
			$video = $db->where('id', $id)->getOne(T_VIDEOS);

			// use the video play price if any, or the default price
			$video_cost_new = $video->video_play_price?$video->video_play_price:$video_cost;

			$uploader_amount = $video_cost_new *0.50;

			// add data to paid table
			$insert_buy = $db->insert('u_paid_videos', [
				'id_user' => $user_id,
				'id_video' => $video_id,
				'session_key' => $_SESSION['session_key'],
				'video_play_price' => (string)$video_cost,
				'video_title' => $video->title, 
				'user_id_uploaded' => $video->user_id, 
				'earned_amount' => $uploader_amount
				]);

i want receive this API JSON : "https://api.cryptowat.ch/markets/binance/btcusdt/ohlc" in PHP And put it in a variable .

so i did this :

<?php
$json= file_get_contents('https://api.cryptowat.ch/markets/binance/btcusdt/ohlc');
$json= json_decode($json , true);
foreach ($json as $row){
    $price = $row['86400'] ?? "";
    print_r($price)  ;
}

and its worked ! but i want to show a specific price like : 86400 / 1122 / 0

and i don't know how ?

<!--
var discnt = 0; // no default percent discount

var coupons = new Array ( // place to put coupon codes
"MavrkHD", "TheFUTBucks", "TOTW", "Mega", "LL"
);
var coupdc = new Array ( // place to put discounts for coupon vals
"10", "15", "7", "10", "20"
);

var coupval = "(blanket)"; // what user entered as coupon code

function ChkCoup () { // check user coupon entry
var i;
discnt = 0; // assume the worst
for (i=0; i<coupons.length; i++) {
if (coupval == coupons[i]) {
discnt = coupdc[i]; // remember the discount amt
alert ("This is a valid promo code! \n\n" + discnt + "%" +
" discount now in effect.");
return;
}
}
alert ("'" + coupval + "' is not a valid promo code!");
}

function Sterling (val) { // force to valid dollar amount
var str,pos,rnd=0;
if (val < .995) rnd = 1; // for old Netscape browsers
str = escape (val*1.0 + 0.005001 + rnd); // float, round, escape
pos = str.indexOf (".");
if (pos > 0) str = str.substring (rnd, pos + 3);
return str;
}

function ReadForm (obj1) { // apply the discount
var amt,des;
amt = obj1.amount.value*1.0; // base amount
des = obj1.basedes.value; // base description

if (discnt > 0) { // only if discount is active
amt = Sterling (amt - (amt * discnt/100.0));
des = des + " - " + discnt + "% off - COUP = " + coupval;
}

obj1.baseamt.value = Sterling (amt);
obj1.item_name.value = des;
}
//-->

<form action="https://www.paypal.com/cgi-bin/webscr" method="post" onsubmit="this.target = 'paypal'; return ReadForm (this);">

<input type="hidden" name="cmd" value="_xclick" />
<input type="hidden" name="add" value="1" />
<input type="hidden" name="business" value="<?=$functions->getPayPal();?>" />
<input type="hidden" name="item_name" value="Online Coin Currency" />
<input type="hidden" name="amount" id="amount" value="0.00" />
<input type="hidden" name="currency_code" value="GBP" />
<input type="hidden" name="baseamt" id="amount" value="0.00" />
<input type="hidden" name="basedes" value="Online Coin Currency (FUT)" />
<input type="hidden" name="custom" id="custom" value="">
<input type="hidden" name="return" value="RETURN LINK HERE";?>
<input type="hidden" name="notify_url" value="<?=HOST.'files/payments/paypal.php';?>">
<input type="hidden" name="cancel_return" value="<?=HOST.'cancelled';?>">
Enter Coupon code
<input type = "text" size = "10" name = "coupcode"; />
<input type="button" value="Apply code" onclick="coupval =this.form.coupcode.value; ChkCoup();" /><br/><br/>
<input type="image" id="xx" src="https://www.paypalobjects.com/WEBSCR-640-20110306-1/en_US/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" onclick="CalculateOrder(this.form)" alt="PayPal - The safer, easier way to pay online!">
<img alt="" border="0" src="https://www.paypalobjects.com/WEBSCR-640-20110306-1/en_US/i/scr/pixel.gif" width="1" height="1">
</form>