PHP Page Redirect

PHP page redirect

Yes, you would use the header function.

/* Redirect browser */
header("Location: http://www.yourwebsite.com/user.php"); 
exit();

It is a good practice to call exit() right after it so that code below it does not get executed.

Also, from the documentation:

Remember that header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP. It is a very common error to read code with include(), or require(), functions, or another file access function, and have spaces or empty lines that are output before header() is called. The same problem exists when using a single PHP/HTML file.

This means you should not echo anything right before the header() function, as doing so will more than likely throw an error. Also, you will need to verify that this code gets run before any other output as well.

Php Redirect to a new page from an if statement

Check your if condition. The if and else if conditions must not contain any semicolons. If you are using two comparisons you must use && or || in between them. If you are using = in the if and elseif statement then it will always return true.

<?php

$term=$_POST['term'];
$level=$_POST['level'];

if  ($term == 'First' && $level=='js1')
  {
    header("Location: result.php");
    exit();
  } 
else if ($term == 'First' && $level='js2')
  {
    header("Location: result2.php");
    exit();
  } 
else {
  $error = "Entry is invalid";
}

?>

Redirecting to other PHP page

Per the PHP manual page for header():

Remember that header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP.

So move the PHP code above the starting HTML tags, like the example below. I created a variable to hold the message in case the login attempt fails (i.e. $message). Notice how it is set it to a blank message initially (for good scope) and then set when appropriate. Then it is added to the form down below.

Edit:

You can see this demonstrated in this phpFiddle. Try logging in with any username. If you enter the password pw, then you should be taken to index.php, which on that page display an image with the text phpfiddle.org. Also, I removed the HTML from the else block, so it will always show the form (and insert the login failure message if it is set), though you might want to have it not show the form again if the login fails...

<?php
ob_start();
require('dbconnect.php');
require('loginservice.php');
session_start(); 
$message = ''; //initialize to empty, for good scope
//if my form is submitted
if(isset($_POST['submit']))
{

    $username=$_POST['username'];
    $password=$_POST['password'];

    $query1= userIdentity($username,$password);
    if($query1==1){
        $_SESSION['username'] = $username;
        //    Redirect user to index.php</script>";
        header("Location: index.php");
        //...
     }//else:
     else {
          $message = "<div class='form'><h3>Username/password is incorrect.</h3>
          <br />click here to <a href='login.php'>Login</a></div>";
     }
?>
<html>
<head>    
<!-- the rest of the HTML content -->

and in the body, append that incorrect message if it is defined, e.g.:

<div class="form"><?php echo $message; ?> 
    <h1>Log In</h1><!-- rest of the HTML for the form-->

PHP redirect after 5 seconds

Use header Refresh.
It is simple:

header("Refresh:5; url=register.php");

It should work, make sure no output is before this header.

How to redirect to another page using PHP

That's the problem. I've outputted a bunch of information (including the HTML to build the login page itself). So how do I redirect the user from one page to the next?

This means your application design is pretty broken. You shouldn't be doing output while your business logic is running. Go an use a template engine (like Smarty) or quickfix it by using output buffering).

Another option (not a good one though!) would be outputting JavaScript to redirect:

<script type="text/javascript">location.href = 'newurl';</script>