I am in the midst of uploading a website to the internet using HostGator's cPanel platform. I am having a seriously hard time getting everything to function correctly. Everything worked on my personal server before I started transferring the files. The website opens with a log-in screen, but every time I try to log-in, I get this error:
Warning: Cannot modify header information - headers already sent by...
(File path info excluded)
At this point, I'm worried that maybe the database isn't connected correctly. I found this answer on SO: How to fix "Headers already sent" error in PHP, but I'm a bit confused on where to look for the error (not very proficient in PHP).
Here's the code that's causing the problem (The full error says the problem is on line 10, which is "header("location: error.php");" :
<?php
/* User login process, checks if user exists and password is correct */
// Escape email to protect against SQL injections
$email = $mysqli->escape_string($_POST['email']);
$result = $mysqli->query("SELECT * FROM users WHERE email='$email'");
if ( $result->num_rows == 0 ){ // User doesn't exist
$_SESSION['message'] = "User with that email doesn't exist!";
header("location: error.php");
}
else { // User exists
$user = $result->fetch_assoc();
if ( password_verify($_POST['password'], $user['password']) ) {
$_SESSION['email'] = $user['email'];
$_SESSION['first_name'] = $user['first_name'];
$_SESSION['last_name'] = $user['last_name'];
$_SESSION['active'] = $user['active'];
// This is how we'll know the user is logged in
$_SESSION['logged_in'] = true;
header("location: Bootstrap/index2.php");
}
else {
$_SESSION['message'] = "You have entered wrong password, try again!";
header("location: error.php");
}
} ?>
The full error also says, "full output started by..." this file here:
<?php
/* Main page with two forms: sign up and log in */
require 'db.php';
session_start();
?>
<!DOCTYPE html>
<html>
<head>
<title>Sign-Up/Login Form</title>
<?php include 'Looks/css.html'; ?>
</head>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
if (isset($_POST['login'])) { //user logging in
require 'login.php';
}
elseif (isset($_POST['register'])) { //user registering
require 'register.php';
}
}
?>
<body>
<div class="form">
<ul class="tab-group">
<li class="tab"><a href="#signup">Sign Up</a></li>
<li class="tab active"><a href="#login">Log In</a></li>
</ul>
<div class="tab-content">
<div id="login">
<h1>Welcome Back!</h1>
<form action="index.php" method="post" autocomplete="off">
<div class="field-wrap">
<label>
Email Address<span class="req">*</span>
</label>
<input type="email" required autocomplete="off" name="email"/>
</div>
<div class="field-wrap">
<label>
Password<span class="req">*</span>
</label>
<input type="password" required autocomplete="off" name="password"/>
</div>
<!--<p class="forgot"><a href="forgot.php">Forgot Password?</a></p>-->
<button class="button button-block" name="login" />Log In</button>
</form>
</div>
<div id="signup">
<h1>Sign Up</h1>
<form action="index.php" method="post" autocomplete="off">
<div class="top-row">
<div class="field-wrap">
<label>
First Name<span class="req">*</span>
</label>
<input type="text" required autocomplete="off" name='firstname' />
</div>
<div class="field-wrap">
<label>
Last Name<span class="req">*</span>
</label>
<input type="text"required autocomplete="off" name='lastname' />
</div>
</div>
<div class="field-wrap">
<label>
Email Address<span class="req">*</span>
</label>
<input type="email"required autocomplete="off" name='email' />
</div>
<div class="field-wrap">
<label>
Set A Password<span class="req">*</span>
</label>
<input type="password"required autocomplete="off" name='password'/>
</div>
<button type="submit" class="button button-block" name="register" />Register</button>
</form>
</div>
</div><!-- tab-content -->
</div> <!-- /form -->
<script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script src="index.js"></script>
</body>
</html>
I have no idea where to start with this. I checked for white space multiple times, so I'm sure that's not the issue. Any help would be greatly appreciated.
