Hello seniors,
How are you?
Well I need you help I am new student of php.
Now I am trying to make user login system so that user can login through their password and user name.
But I’m receiving this error.
“
Fatal error: Cannot redeclare loggedin() (previously declared in C:\xampp\htdocs\series\firstfile\DB\Logging the User In Part\core.inc.php:7) inC:\xampp\htdocs\series\firstfile\DB\Logging the User In Part\core.inc.php on line 12
”
Below is whole code:
This is index.php page containing code:
<?php
require 'core.inc.php';
require 'connect.inc.php';
if(loggedin()){
echo 'you are login.';
}else{
include 'loginform.inc.php';
}
?>
this is connect.inc.php containing code to connect with database
<?php
$mysql_host = 'localhost';
$mysql_user = 'root';
$mysql_pass = '';
$mysql_db = 'a_database';
if(!mysql_connect($mysql_host, $mysql_user, $mysql_pass) || ! mysql_select_db($mysql_db)) {
die(mysql_error());
}
?>
core.inc.php page, I think this is creating problem if this not the index.php
<?php
ob_start();
session_start();
$current_file = $_SERVER;
function loggedin(){
if(isset($_SESSION) && !empty($_SESSION)){
return true;
}else{
return false;
}
}
?>
last one page is loginform.inc.php which will check weather user have enter something or not after that check username and password is correct or not?
<?php
require 'core.inc.php';
if(isset($_POST) && isset($_POST)){
$username=$_POST;
$password=$_POST;
$password_hash = md5($password);
if(!empty($username) && ! empty($password)){
$query = "SELECT id FROM users WHERE username = '$username' AND password = '$password_hash'";
if($query_run = mysql_query($query)){
$query_num_rows = mysql_num_rows($query_run);
if($query_num_rows==0){
echo 'Invalid';
}else if($query_num_rows ==1){
$user_id = mysql_result($query_run, 0, 'id');
echo $user_id;
$_SESSION=$user_id;
header('Location: main.php');
}
}
}else{
echo 'You must enter a username and password.';
}
}
?>
<form action="<?php echo $current_file; ?>" method="POST">
Usrename: <input type="text" name="username">
Password: <input type="password" name="password">
<input type="submit" value="Log in">
</form>
and db is containing these things
id username password firstname surname
1 alex 32250170a0dca92d53ec9624f336ca24 Alex Garrett
Now please help me out why is this script is returning error and how this problem will be solve.
Thanks