Can't fetch data from MySQL (php) (Re-edited) - php

Question

I have realized why i can't actually access userdata (after i am logged) old way to find the username is $_SESSION['username']; (assuming there is a row as 'username' in MySQL database)
So as i have a test account as "good25" (reason to choose numbers was to see if Alphanumeric inputs works fine.. its just checkup by me.. nevermind)
Problem :
assuming, i have rows in a table as 'username' and all of his information.. such as 'password', 'email', 'joindate', 'type' ...
On net i found out how to snatch out username from Session
<?php session_start(); $_SESSION('username'); ?>
successful!!
i had an idea to check if session is actually registering or no??
after a log on start.php i used this code
if(isset($_SESSION['username'])) { print_r($_SESSION['username']); }
the result was "1" (while i logged in using this username "good25")
any suggestions?
index.php (lets say, index.php just holds registration + Login form + registration script.. in login form, action='condb.php')
<?php
require 'condb.php';
if (isset($_POST['btn-signup']))
{
//FetchInputs
$usern = mysqli_real_escape_string($connection,$_POST['username']);
$email = mysqli_real_escape_string($connection,$_POST['email']);
$password = mysqli_real_escape_string($connection,$_POST['password']);
$repassword = mysqli_real_escape_string($connection,$_POST['repassword']);
$usern = trim($usern);
$email = trim($email);
$password = trim($password);
$repassword = trim($repassword);
//SearchUser
$searchusr = "SELECT username FROM $user_table WHERE username='$usern'";
$usersearched = mysqli_query($connection, $searchusr);
$countuser = mysqli_num_rows($usersearched);
//SearchEmail
$searcheml = "SELECT email FROM $user_table WHERE email='$email'";
$emlsearched = mysqli_query($connection, $searcheml);
$counteml = mysqli_num_rows($emlsearched);
//RegisteringUser
if ($countuser == 0)
{
if ($counteml == 0)
{
$ctime = time();
$cday = date("Y-m-d",$ctime);
$aCode = uniqid();
$adduser = "INSERT INTO $user_table(username, email, password, realname, activationcode, verified, joindate, type, points) VALUES ('$usern','$email','$password','$name','$aCode','n','$cday','Free',$signPoints)";
if (mysqli_query($connection, $adduser))
{
?><script>alert('You have been registered');</script><?php
}
else {
?><script>alert('Couldnt Register, please contact Admin<br><?mysqli_error($connection);?>');</script><?php
}
} else {
?><script>alert('Email already exists!');</script><?php
}
} else {
?><script>alert('Username already exists!');</script><?php
}
}
?>
condb.php
$connection = mysqli_connect($db_server, $db_user, $db_pass);
mysqli_select_db($connection, $db_name);
if(!$connection) {
die ("Connection Failed: " . mysqli_connect_error);
}
if (isset($_POST['btn-login']))
{
$uname = mysqli_real_escape_string($connection,$_POST['uname']);
$upass = mysqli_real_escape_string($connection,$_POST['upass']);
//FindUser
$finduser = "SELECT * FROM $user_table WHERE username='$uname' AND password='$upass'";
$findinguser = mysqli_query($connection,$finduser);
$founduser = mysqli_num_rows($findinguser);
//ConfirmPassword
if ($founduser > 0)
{
session_start();
$_SESSION['username'] = $username;
$_SESSION['username'] = true;
if ($findinguser != false)
{
while ($fetchD = mysqli_fetch_array($findinguser, MYSQLI_ASSOC))
{
$fetchD['username'] = $usernn;
$fetchD['email'] = $email;
$fetchD['userid'] = $uid;
$fetchD['realname'] = $rlnm;
$fetchD['points'] = $pts;
$fetchD['type'] = $membertype ;
}
header("Location: start.php");
} else {
echo mysqli_error();
}
} else {
header("Location: index.php");
?><script>alert('Wrong details, please fill in correct password and email');</script><?php
}
}
I am not asking you to build a script.. just little help please? (Thank you so so so so so much, as i am a self-learner, you don't have to say everything.. just a clue is enough for me)

Answer 1

may be you can try this code
<?php
require_once 'require.inc.php';
//session_start();
if (isset($_POST['btn-login']))
{
$uname = mysqli_real_escape_string($_POST['uname']);
$upass = mysqli_real_escape_string($_POST['upass']);
$search = mysqli_query($connection, "SELECT username, userid, password from $user_table WHERE username='$uname' AND password='$upass'");
$match = mysqli_fetch_assoc($search);
if ($match == 1 and $match['password'] == md5($upass))
{
$_SESSION['username'] = $match['userid'];
} else {
?>
<script>alert('Password or E-mail is wrong. If you havent registered, Please Register');</script>
<?php
}
}
if (isset($_SESSION['username']) or isset($match['userid'])){
header("Location:start.php");
}
if (isset($_POST['btn-signup']))
{
$name = mysqli_real_escape_string($_POST['name']);
$usern = mysqli_real_escape_string($_POST['username']);
$email = mysqli_real_escape_string($_POST['email']);
$password = mysqli_real_escape_string($_POST['password']);
$repassword = mysqli_real_escape_string($_POST['repassword']);
$name = trim($name);
$usern = trim($usern);
$email = trim($email);
$password = trim($password);
$repassword = trim($repassword);
$query = "SELECT email FROM $user_table WHERE email='$email'";
$result = mysqli_query($connection, $query);
$count = mysqli_num_rows($result);
$querytwo = "SELECT username FROM $user_table WHERE username='$usern'";
$resulttwo = mysqli_query($connection, $querytwo);
$counttwo = mysqli_num_rows($resulttwo);
if ($count == 0 AND $counttwo == 0)
{
if ($password == $repassword) {
if (mysqli_query($connection, "INSERT INTO $user_table(username, email, password, realname) VALUES ('$usern','$email','$password','$name')"))
{
?>
<script> alert ('Successfully registered'); </script>
<?php
}
}else {
?>
<script> alert ('The Password you entered, doesnt match.. Please fill in the same password'); </script>
<?php
}
}
else {
?>
<script> alert('Username or E-mail already exist'); </script>
<?php
}
}
?>
and this is for require.inc.php
<?php
global $username;
//require 'dconn.php';
session_start();
$_SESSION["username"] = $username;
$connection = mysqli_connect("localhost","root","", "test") or die(mysqli_error());
// Check Login
if (isset($_SESSION['username']) and isset ($match['userid']))
{
$Selection = "SELECT * FROM $user_table WHERE username='$username'";
$selectQuery = mysqli_query($connection, $Selection);
if ($selectQuery != false)
{
while ($fetchD = mysqli_fetch_assoc($selectQuery))
{
$usernn = $fetchD['username'];
$email = $fetchD['email'];
$uid = $fetchD['userid'];
}
} else {
echo mysqli_error();
}
}
?>

Answer 2

#suggestion, create session after user login and authorized then for each page start session and take session which you created and perform SQL queries using that session variable.
for example :
$_SESSION['user_name']=$row['username'];
for each page:
session_start();
$user_name=$_SESSION['user_name'];
SQL query
mysqli_query($con,"SELECT * FROM users where column_name='$user_name'");

Answer 3

I think you need to include dconn.php file in all files where you want to perform the mysql operation. If you have included it only in require.inc.php then you you it in all your other files.