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我有多个表要加入到第二个查询的结果中，并将第二个结果嵌套在第一个结果中。

我正在使用以下代码：

$result = mysqli_query($con,"SELECT info.lotto_id, info.name, info.number_balls, info.number_bonus_balls, info.db_name, country.name_eng AS country, currency.name AS currency, currency.symbol AS symbol, next.draw_date AS next_draw, next.jackpot AS next_jackpot
FROM info
LEFT JOIN country ON info.country_id = country.id_country 
LEFT JOIN currency ON info.currency_id = currency.currency_id
LEFT JOIN next ON info.lotto_id = next.lotto_id
WHERE (info.active='1')
ORDER BY next_jackpot DESC");

while($lotto = mysqli_fetch_array($result))

{

    echo "<table border='0' width='600px' align='center'>";
    echo "<tr>";
    echo "<td>";
    echo "<h1>Results for:</h1>";
    echo "</td>";
    echo "<td align='right'>";
    echo "<p><img src='images/". $lotto['lotto_id'] ."_big.png' alt='". $lotto['name'] ." Results'/></p>";
    echo "</td>";
    echo "</tr>";
    echo "</table>";

$result2 = mysqli_query($con,"SELECT * FROM" .$lotto['db_name'].
"ORDER BY date DESC
Limit 3");

while($draw = mysqli_fetch_array($result2))

  {
    echo "<table class='results' align='center'>";
    echo "<tr>";
    $draw['display_date'] = strtotime($draw['date']);
$lotto['cols'] = $lotto['number_balls'] + $lotto['number_bonus_balls'];
    echo "<td class='date' colspan='".$lotto['cols']."'>".date('D M d, Y', $draw['display_date']). "</td>";

if ($draw[jp_code] < "1")
{
    echo "<td class='winner' align='center'>Jackpot Amount</td>";
}
else
{
    echo "<td class='rollover' align='center'>Rollover Amount</td>";
}

它给了我以下错误：警告：mysqli_fetch_array() 期望参数 1 是 mysqli_result，布尔值在 /home/content/95/11798395/html/results/info_mysqli.php 第 59 行给出

这与我的 results2 查询有关。有人可以建议我做错了什么。

谢谢你。

4

1 回答 1

1

改变：

$result2 = mysqli_query($con,"SELECT * FROM" .$lotto['db_name'].
"ORDER BY date DESC
Limit 3");

至：

$result2 = mysqli_query($con, "SELECT * FROM {$lotto['db_name']} ORDER BY date DESC LIMIT 3");
if ($result === false) {
    exit("Error: " . mysqli_error($con));
}
于 2013-10-16T15:58:14.390 回答