Question

我试图通过循环遍历数组的值 - （称为列）来进行一系列mysqli查询 - 但是没有返回任何内容。

for ($i = 0; $i < sizeof($column); $i++)

{
    $mutualInterests = mysqli_query ($conn, "SELECT USER_1 FROM INTERESTS WHERE answer = " . $column[$i] );

    while ($row = mysqli_fetch_array ($mutualInterests))

    {
        echo " $row[USER_1]";

    }


}

Answer 1

替换它：

while ($row = mysqli_fetch_array ($mutualInterests))

{
    echo " $row[USER_1]";

}

用这个：

$count = 0;
while ($row = mysqli_fetch_array ($mutualInterests))
{
    echo $row[$count]."<br>";
    $count++;

}

让我知道它现在是否有效！：）

Answer 2

只需用以下内容替换您给定的代码，然后查看结果..........

$query='SELECT USER_1 FROM INTERESTS WHERE answer ="'.$column[0].'"';

for ($i = 1; $i < sizeof($column); $i++)

{
$query.=' OR answer ="'.$column[$i].'"';

}

$mutualInterests = mysqli_query ($conn,$query);

while ($row = mysqli_fetch_array ($mutualInterests))

{
    echo " $row[USER_1]";

}

使用for循环进行多个mysqli查询

2 个答案: