Question

如何检索“＆＃39;”级别的选定值？表VBmembers中的列将其设置为$level变量？

    session_start();

if (isset($_SESSION['user']))
{
    $user = $_SESSION['user'];
    $query = "SELECT level FROM VBmembers WHERE user='$user'";
    $level = queryMysql($query);
    $loggedin = TRUE;
}
else $loggedin = FALSE;

queryMysql函数代码

function queryMysql($query)
{
    $result = mysql_query($query) or die ('ivalid query: ' . mysql_error());
    return $result;
}

Answer 1

您还需要几个步骤，最重要的是从结果中以可用的方式获取数据：

$user = $_SESSION['user'];
$query = "SELECT level FROM VBmembers WHERE user='$user'";
$result = queryMysql($query);
$row = mysql_fetch_array($result);
$level = $row['level'];
$loggedin = TRUE;

正如我在评论中所说，your script is at risk for SQL Injection Attacks.

如果可以，你应该stop using mysql_* functions。已在PHP 7中删除These extensions。了解prepared和PDO的MySQLi语句，并考虑使用PDO，it's really not hard。

从表PHP的列中检索选定的值

1 个答案: