不能分配从FETCH_ASSOC返回值（）

Question

我写的PHP

$query = "SELECT privilege , no, userName FROM $tableName WHERE userName = 

'$inputAccount' and password = '$inputPassword'"; 

$result = $mysqli->query($query); 

if($result){ 
     while ($row = $result->fetch_assoc()) { 
     printf ("%s %s %s\n", $row["privilege"], $row["no"], $row["userName"]); 
    } 
} 

结果是user 2 test

session_start(); 
$_SESSION["privilege"]=$row["privilege"]; 
$_SESSION["no"]=$row["no"]; 
$_SESSION["userName"]=$row["userName"] 

echo $_SESSION["privilege"] ; 
echo $_SESSION["no"]; 
echo $_SESSION["userName"]; 

但结果来无事，我必须解决它很长一段时间，找不到原因？

Thx提前。

Answer 1

使用下面的代码，问题是，你是不是存储变量的SQL输出和访问while循环之外的结果。

session_start(); 
$query = "SELECT privilege , no, userName FROM $tableName WHERE userName = 

'$inputAccount' and password = '$inputPassword'"; 

$result = $mysqli->query($query); 

if($result){ 
     while ($row = $result->fetch_assoc()) { 
     //printf ("%s %s %s\n", $row["privilege"], $row["no"], $row["userName"]); 
     $pr = $row["privilege"]; 
     $no = $row["no"]; 
     $name = $row["userName"]; 
    } 
} 

$_SESSION["privilege"]=$pr; 
$_SESSION["no"]=$no; 
$_SESSION["userName"]=$name 

echo $_SESSION["privilege"] ; 
echo $_SESSION["no"]; 
echo $_SESSION["userName"]; 

Answer 2

假设你以后您while循环分配值$_SESSION，$row将false在那个阶段。