lottery.php 500 error

<?php
include('./includes/connections.php');
include('./includes/brain_file.php');
include('./includes/style_top.php');

echo "
     <center>
              <main>
                 Lottery
              </main>
                 ";
if ($pl['my_jail'] > time() || $pl['my_hosp'] > time()) {
    echo "Sorry this page is not viewable while in jail or hospital!
              <hr width='750px'/>";
} else {
if ($lottoconfig['pagedisable'] == 'Yes' &&$pl['playerid'] != 1)

{

    echo "<span style='color:red'>Sorry but admin has disbaled the lottery system.</span>";



    exit;

}



$_GET['action'] = isset($_GET['action']) && ctype_alpha($_GET['action']) ? strtolower(trim($_GET['action'])) : '';
switch($_GET['action'])
{
	case 'buy': buy_tickets(); break;
	default: lotto(); break;
}

function lotto()
{
global $pl,$set,$h,$lottoconfig,$q_ry	;
	$q_ry = array();
$q_ry = ("SELECT COUNT(`user`) FROM `lottery_players`");
	mysql_query($q_ry);
	echo "
    		<img src='http://4e7221.medialib.glogster.com/media/89879e031a5dbed8d1bf0e877ee49cb2a02e02f15f87bde3408ccfcc30c163b1/dollar-sign.png'
    			width='200px' height='100px' /><br /><br />
    		<span>Welcome to the lottery</span>
    		<span>Each ticket costs <strong>".number_format($lottoconfig['ticketprice'])."</strong></span><br />
    		<span>Maximum of <strong>".number_format($lottoconfig['maxtickets'], '')."</strong> tickets per person</span>
    		<hr width='75%' align='center'>
    		<strong>Loto Info</strong><br /><br />
    		<span>Jackpot: ".number_format($lottoconfig['ticketprice'] * $amt)."</span><br />
    		<span>Tickets Purchased: ".number_format($amt, '')."</span><br />
    		<span>Your Tickets: ".number_format($pl['tickets'], '')."</span><br /><br />
    		<form method='post' action='lottery.php?action=buy'>
    			Buy Tickets: <input style='background: #BCC6CC;' type='text' name='amount' value='1' maxlength='2' />
        		<button style='background: #BCC6CC; width: 100px; padding: 5px;'>Buy</button>
    		</form>";
    		if($pl['playerid'] == 1)
    		{
    			if(isset($_POST['updatesettings']))
    			{
    				$_POST['tp'] = isset($_POST['tp']) && ctype_digit($_POST['tp']) ? abs(intval($_POST['tp'])) : 0;
    				$_POST['mut'] = isset($_POST['mut']) && ctype_digit($_POST['mut']) ? abs(intval($_POST['mut'])) : 0;

    				if(empty($_POST['tp']) || empty($_POST['mut']))
    				{
    					echo "You have missed a required field.";

    					exit;
    				}

    				$check = mysql_query("SELECT `ticketprice`,`maxtickets` FROM `lottery_config`");
    				if(mysql_num_rows($check))
    					mysql_query("UPDATE `lottery_config` SET `ticketprice` = {$_POST['tp']}, `maxtickets` = {$_POST['mut']}");
    				else
    					mysql_query("INSERT INTO `lottery_config` VALUES('{$_POST['tp']}','{$_POST['mut']}')");
    				echo "Info has been updated.";
    			}
    			else if(isset($_GET['disable']))
    			{
    				$select = mysql_query("SELECT `pagedisable` FROM `lottery_config`");
    				if(mysql_fetch_single($select) == 'Yes')
    				{
    					mysql_query("UPDATE `lottery_config` SET `pagedisable` = 'No' WHERE `pagedisable` = 'Yes'");
    					echo "You have enabled the page again users can access the lottery.";
    				}
    				else
    				{
    					mysql_query("UPDATE `lottery_config` SET `pagedisable` = 'Yes' WHERE `pagedisable` = 'No'");
    					echo "You have disabled the page users can't access the lottery.";
    				}
    			}
    			else
    			{
    				echo "<br /><br /><hr width='50%' align='center'>
    				<h3>Lottery Admin Panel</h3>
    				<p>Fill out the form below to create / update the price and max tickets.</p><br />
    				<form method='post'>
    					Cost Per Ticket: $<input type='text' name='tp' value='1' /><br /><br />
    					Max Tickets Per User: <input type='text' name='mut' value='1' /><br /><br />
    					<input type='submit' name='updatesettings' value='Update Lottery Settings' />
    				</form><br /><br />
    				<a href='lottery.php?disable'>[Turn On/Off Lottery Page]</a>";
    			}
    		}
    	echo "</div>";

}

function buy_tickets()
{
	$_POST['amount'] = isset($_POST['amount']) && ctype_digit($_POST['amount']) ? abs(intval($_POST['amount'])) : 0;
	if(empty($_POST['amount']))
	{
		echo "Invalid Format.";

		exit;
	}
	$deficit = $lottoconfig['maxtickets'] - $pl['tickets'];
	if($pl['tickets'] + $_POST['amount'] > $lottoconfig['maxtickets'])
	{
		echo "The max tickets is ".number_format($lottoconfig['maxtickets']).".
		This means you can only buy ".number_format($lottoconfig['maxtickets'] - $pl['tickets'])." more ticket".($deficit == 1 ? '' : 's');

		exit;
	}
	if($_POST['amount'] > $lottoconfig['maxtickets'])
	{
		echo "You can't purchase this amount of tickets..";

		exit;
	}
	if($pl['wallet'] < $lottoconfig['ticketprice'] * $_POST['amount'])
	{
		echo "You don't have enough you need ".number_format($lottoconfig['ticketprice'] * $_POST['amount'] - $pl['wallet']) ." more.";

		exit;
	}
	if($pl['wallet'] >= $lottoconfig['ticketprice'] * $_POST['amount'] && $_POST['amount'] <= $lottoconfig['maxtickets'])
	{
		$pl['wallet'] -= $lottoconfig['ticketprice'] * $_POST['amount'];
		$pl['tickets'] += $_POST['amount'];
		for($i = 1; $i <= $_POST['amount']; $i++)
			mysql_query("INSERT INTO `lottery_players` VALUES('{$pl['userid']}')");
		mysql_query("UPDATE `members` SET `wallet` = {$pl['wallet']}, `tickets` = {$pl['tickets']} WHERE `userid` = {$pl['userid']}");
		echo "You have purchased ".number_format($_POST['amount'], '')." tickets for ".number_format($lottoconfig['ticketprice'] * $_POST['amount']);
	}
}
}