.htaccess rewriting doesn't work in my PHP Code

Question

I want to rewrite the URL like this 127.0.0.1/profile.php?user=userName to 127.0.0.1/user/userName or 127.0.0.1/profile/userName . it doesnt matter, but please please help me.

PHP Code:

<?php

require_once 'core/init.php';

if(!$username = Input::get('user')) {
    Redirect::to('index.php');
} else {
    $user = new User($username);

    if(!$user->exists()) {
        Redirect::to(404);
    } else {
        $data = $user->data();
?>

        <h3><?php echo escape($data->username); ?></h3>
        <p>Name: <?php echo escape($data->name); ?></p>

<?php
    }
}

Answer 1

You can use this rule in your DOCUMENT_ROOT/.htaccess file:

RewriteEngine On

RewriteRule ^(user)/(\w+)/?$ profile.php?$1=$2 [L,QSA,NC]