Question

我正在尝试使用mysqli显示单行数据。查询是

$getfield = mysqli_query($con,"select name from as_users where user_id=34");
if (mysqli_num_rows($getfield) > 0) 
{
     while($rowpwd = mysqli_fetch_array($getfield))
        {
           echo $rowpwd['name'];
        }
}

如果我打印，那么我得到

echo '<pre>';
print_r(mysqli_fetch_array($getfield));
echo '</pre>';

Array
(
    [0] => abc
    [name] => abc
)

但是在while循环中获取名称不起作用。

非常感谢任何帮助。

Answer 1

试试这个：

$getfield = mysqli_query($con,"select name from as_users where user_id=34");
if (mysqli_num_rows($getfield) > 0) 
$whatYouWant = array();
{
     while($rowpwd = mysqli_fetch_array($getfield))
        {
           //echo $rowpwd['name'];
           $whatYouWant[] = $rowpwd['name'];
        }
}



echo '<pre>';
print_r($whatYouWant);
echo '</pre>';

Answer 2

试试这个：

$getfield = mysqli_query($con,"select name from as_users where user_id=34");
if (mysqli_num_rows($getfield) > 0) 
{
     $rowpwd = mysqli_fetch_array($getfield)['name'];
     echo $rowpwd;
}

OR

$getfield = mysqli_query($con,"select name from as_users where user_id=34");
if (mysqli_num_rows($getfield) > 0) 
{
   $rowpwd = mysqli_fetch_array($getfield);
   echo $rowpwd['name'];
}

Answer 3

变化：

mysqli_fetch_array

收件人：如果你想要行的键

mysqli_fetch_assoc

收件人：如果你想要行的索引

mysqli_fetch_row

使用mysql db中的mysqli获取单行

3 个答案: