Why is the session value empty?

Session MySQL PHP

member_login_do.php


/* Member Login Processing page */
Require_once (".. /conn/conn_db.php "); Include database link file
if ($_post["Txt_username"]!= "" && $_post["txt_pwd"]!= "")
{
$name = $_post["Txt_username"]; Get the submitted user name
$pwd = $_post["Txt_pwd"]; Get the submitted password
$STR = "SELECT * from member_info where m_name = ' $name ' and M_password = ' $pwd '"; Query statements
$result = mysql_query ($STR); Execute SQL statement
if (mysql_num_rows ($result) >0)//View the number of query result rows returned
{
session_id (SID);
Session_Start (); Login successful, set session value
$_session[' member '] = $_post[' txt_username '];
Session_write_close ();
echo "";
Exit (0);
}
Else
{
echo "";
}
}
Else
{
echo "";
}
?>

Reply to discussion (solution)

session_member_check.php

/* Member Landing judgment page */
if ($_session[' member ' = = "")//login to determine if no landing, then jump to the landing page
{
echo "";
}
Else
{
$membername = $_session[' member ');
echo "Welcome to Fujian-Taiwan Mall! ". $membername;
}
?>

After each landing can not jump to the member_info.php, are also appear landing box (member_login.php)

session_member_check.php

Don't you need a start?

I added it before the if judgment, but it's the same.

It seems that after the addition of warning, but a flash past, can not see clearly

Each program needs to have session_start (); You're only in member_login_do.php.

SID only has a value after session_start ()

Kiss and inject.

But add the session_start (); It's still the same, can't jump.

if (mysql_num_rows ($result) >0)//View the number of query result rows returned
{
Exit Did you get in here?
..................

You first find out whether the member_info.php jump to the member_login.php file or before the jump.

I added session_id (SID) at the beginning of several PHP files, session_start (), now the page can jump, but the member_info.php cannot display the information queried from the database?

member_info.php



Member Center

Member Center
session_id (SID); Session_Start (); Require_once ("action/session_member_check.php");?>
	Require_once ("conn/conn_db.php"); Include database link file $STR = "SELECT * from member_info where m_name = '". $_session[' Member ']. "'"; Query statements Echo $_session[' member ']; $arr = mysql_query ($STR); Execute SQL statement $result = Mysql_fetch_array ($arr); Get query Results ?> Member Basic information User name: Password: Password protection issues: Password protection Answer: ID Number: Contact Phone: Qq: Mailbox: Contact Address: Zip code: Consumption amount: Balance: Registration time:

Print_r ($result); What's the result?

I'll just switch to a browser.

