answer.php

<?php
require "include/bittorrent.php";
dbconn();
loggedinorreturn();
global $CURUSER;
if (!$questions = $Cache->get_value('questions'))//查询题库容量
{
    $questions = mysql_num_rows(sql_query("SELECT * FROM questions"));
    $Cache->cache_value('questions', $questions, 3600);
}

if ($_POST["change"]) {
    if (strpos($CURUSER['notifs'], "[changequestion]") !== false)
        $notice = "<h1>您已更换过新题了，不能再次更换！</h1><br/>";
    else {
        sql_query("UPDATE users SET notifs='" . $CURUSER["notifs"] . "[changequestion]', seedbonus=seedbonus - 100 WHERE id = " . $CURUSER["id"]);
        header("refresh:0;url=" . str_replace("/", "", $_SERVER['PHP_SELF']) . "?change=true");
    }
}

$res = mysql_fetch_assoc(sql_query("SELECT answer FROM users WHERE id = '" . $CURUSER["id"] . "'"));//查询答题次数
$already = $res["answer"];
$number = hexdec(substr(md5($CURUSER["username"] . $CURUSER["id"] . $res["answer"] . ((strpos($CURUSER['notifs'], "[changequestion]") !== false) ? "change" : "")), 0, 10)) % $questions; //随机抽题，允许换一次题目
if ($number < 0) $number += $questions;
$res = mysql_fetch_assoc(sql_query("SELECT * FROM questions WHERE 1 LIMIT " . $number . ",1"));//根据随机数取出题目
if ($already < 10) $notice .= "<h3>您已回答了" . $already . "题，还有" . (10 - $already) . "次答题机会！</h3><br/>";

if ($ans = $_POST["choice"] && !$_POST["change"]) {
    $answer = 0;
    if (is_array($_POST["choice"])) foreach ($_POST["choice"] as $ans) $answer += $ans;
    else $answer = 0 + $_POST["choice"];

    if ($answer == $res["answer"] && $_POST["id"] == $res["id"]) {
        sql_query("UPDATE users SET notifs=replace(notifs,'[changequestion]','') , seedbonus=seedbonus + 200 ,answer=answer+1 WHERE id = " . $CURUSER["id"]);
        stderr("回答正确", "恭喜您，回答正确。您已经获得了我们送出的200个魔力值，请注意查收！<a href=\"" . str_replace("/", "", $_SERVER['PHP_SELF']) . "\" target=_self>点这里刷新</a>", 0);

    } elseif ($_POST["id"] != $res["id"]) {
        stderr("数据错误", "请不要尝试自行更换题目！<a href=\"" . str_replace("/", "", $_SERVER['PHP_SELF']) . "\" target=_self>点这里刷新</a>
", 0);
    } else {
        sql_query("UPDATE users SET seedbonus=seedbonus-50 WHERE id = " . $CURUSER["id"]);
        stderr("回答错误", "很抱歉，您的回答不正确。您被扣除了50个魔力值！<a href=\"" . str_replace("/", "", $_SERVER['PHP_SELF']) . "\" target=_self>点这里刷新</a>
", 0);

    }
}
if ($already >= 10) stderr("恭喜您！", "您已经完成了所有新手任务");
stdhead("会员考核");
$type = (str_replace("0", "", decbin($res["answer"])) == "1") ? "radio" : "checkbox";//确定题目类型
for ($i = 1; $i <= 8; $i *= 2)
    if ($res["answer" . $i] != "") $choices[] = "<tr><td class=\"text\"  align=\"left\" width=\"100%\">&nbsp;&nbsp;&nbsp;&nbsp;<input type=\"" . $type . "\" name=\"choice" . (($type == "checkbox") ? "[]" : "") . "\" value=\"" . $i . "\" >" . $res["answer" . $i] . "</td></tr>\n";//将选项存入数组
shuffle($choices); //乱序排列
if ($notice) print($notice);

?>
    <form action="<?php echo str_replace("/", "", $_SERVER['PHP_SELF']); ?>" method="post">
        <table width="60%" border="1" cellspacing="0" cellpadding="10">
            <tr>
                <td class="text" align="left" width="100%">请问：<?php echo $res["question"]; ?></td>
            </tr>
            <input type="hidden" name="id" value="<?php echo $res["id"]; ?>"/>
            <?php echo $choices[0]; ?>
            <?php echo $choices[1]; ?>
            <?php echo $choices[2]; ?>
            <?php echo $choices[3]; ?>
            <tr>
                <td class="text" align="center" width="100%"><input type="submit" name="submit" value="提交"/> <input
                            type="submit" name="change" value="换题"/></td>
            </tr>
            <tr>
                <td class="text" align="center" width="100%"><font
                            color="#FF0000"><b>温馨提醒：换题需要花费100个魔力值，且每道题只能更换一次！</b></font></td>
            </tr>
        </table>
    </form>
<?php stdfoot();