我一直在尝试将 mysql 服务器表字段中的值设置为也等于 $_SESSION["mypermissions"] session 变量。无论我尝试什么,它都会出现空白或值为 0。我觉得这可能是一个愚蠢的问题,有一个简单的解决方案,但似乎没有任何效果。这是到目前为止我的代码,请在底部附近查找相关的 SQL 查询。
<?php
$host="localhost"; // Host name
$username="root"; // Mysql username
$password=""; // Mysql password
$db_name="comproject"; // Database name
$tbl_name="members"; // Table name
// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
// username and password sent from form
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];
// To protect MySQL injection
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$result=mysql_query($sql);
// Mysql_num_row is counting table row
$count=mysql_num_rows($result);
// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1){
session_start();
$_SESSION["myusername"] = $myusername;
$sql = "SELECT permissions FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$_SESSION["mypermissions"] = mysql_query($sql);
header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
?>
最佳答案
您似乎没有获取查询结果。您必须根据结果集 session 变量获取结果,如下所示:
<?php
$host="localhost"; // Host name
$username="root"; // Mysql username
$password=""; // Mysql password
$db_name="comproject"; // Database name
$tbl_name="members"; // Table name
// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
// username and password sent from form
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];
// To protect MySQL injection
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword' limit 1";
$result=mysql_query($sql);
// Mysql_num_row is counting table row
$count=mysql_num_rows($result);
// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1){
session_start();
$_SESSION["myusername"] = $myusername;
$row = mysql_fetch_object( $result);//fetch object
$_SESSION["mypermissions"] = $row->permissions; // set permission to session
header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
?>
关于php - SQL查询不返回值,设置为 session 变量,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/21119105/