How to tell server to display 404 page

Question

How to display 404 page when the user is not found.
Consider a website extracting username from $_GET variable like

example.com/users/?username=johndoe // Normal john doe's profile will be displayed

and

example.com/users/?username=jimmy //Should display 404 page without changing url

If a user is not found found in database.It should show a 404 page.

Thanks in Advance

http://stackoverflow.com/questions/768431/how-to-make-a-redirect-in-php — lordkain, Sep 23 '14 at 13:06

score 0 · Answer 1 · answered Sep 23 '14 at 13:15

0

Example:

header($_SERVER['SERVER_PROTOCOL']." 404 Not Found");
echo "Sorry, but user not found :("; //or include your 404 html file
die;

answered Sep 23 '14 at 13:15

overals

92
3

score 0 · Answer 2 · answered Sep 23 '14 at 13:30

Check if user is in database, if not, you can include an error page.

$con = mysqli_connect("example.com", "user", "abc123", "db_name");
$result = mysqli_query($con,"SELECT * FROM user WHERE username = ".$_GET['username']);
if($result == false)
{
    require('error.php');
    exit();
}

// Contine displaying user page.

Make sure to check SQL injection!

How to tell server to display 404 page

2 Answers2