Question

我想在mysqli查询中使用一个列值，但我无法找到使用方法。我的查询是这样的

$result = mysqli_query($mysqli,"SELECT * FROM tbl_settings");
    while($row = $result->fetch_assoc()){
        if($row['automatic'] ==on){

    $number= "$result['automatic']";
    echo $number;
     $sql = mysqli_query($mysqli,"SELECT _quid FROM tbl_quotes where qu_status=0 ORDER BY _quid ASC LIMIT 5");
while($result = mysqli_fetch_array($sql)){

    $qu_time = getDatetimeNow();
    $results = mysqli_query($mysqli,"UPDATE tbl_quotes SET qu_status=1,qu_favorite=0, qu_time='$qu_time' where _quid=".$result['_quid']." ORDER BY _quid ASC");



    }

我想获取列 automatic_number 的值，并希望将其用作 LIMIT ，就像这样

$sql = mysqli_query($mysqli,"SELECT _quid FROM tbl_quotes where qu_status=0 ORDER BY _quid ASC LIMIT $number");

我正在尝试半小时但却无法找到方法。如果有专家可以帮助我，请告诉我。感谢

Answer 1

查询：

$sqlquery = "SELECT _quid FROM tbl_quotes where qu_status=0 ORDER BY _quid ASC LIMIT " .$number;

执行：

$sql = mysqli_query($mysqli, $sqlquery);

Answer 2

错误

if($row['automatic'] ==on)

正确的： if($row['automatic'] =='on')

如果您想指定$result['automatic']的值，那么

$number=$result['automatic'];

这可能是他没有得到限制的原因

在这里$sql = mysqli_query($mysqli,"SELECT _quid FROM tbl_quotes where qu_status=0 ORDER BY _quid ASC LIMIT 6");

Answer 3

如果你想在atomatic_number是tbl_settings表中使用atomatic_number值，那么只需更改

$number=$result['automatic'];

到

$number=$result['automatic_number'];

然后

$sql = mysqli_query($mysqli,"SELECT _quid FROM tbl_quotes where qu_status=0 ORDER BY _quid ASC LIMIT $number");

我希望这就是你要找的东西。

MySqli查询结果行

3 个答案: