Custom routing doesn't work correctly [F3] - php

Question

The custom route doesn't work correctly and always routes to user.htm
index.php
$routes = [
"/" => "index.htm",
"/user/id=#id" => "user.htm","/user/#id" => "user.htm",
];
foreach ($routes as $path => $file) {
$f3->route("GET ".$path,
function($f3){
global $file,$path;
echo View::instance()->render($file);
}
);
}

Answer 1

try this:
$routes = [
"/" => "index.htm",
"/user/id=#id" => "user.htm",
"/user/#id" => "user.htm",
];
foreach ($routes as $path => $file)
{
$f3->route("GET " . $path,
function ($f3) use ($file)
{
echo View::instance()->render($file);
}
);
}

Answer 2

The answer from Bryan Velastegui is the correct one. But here's why your code didn't work:
$f3->route() maps each route URI to a function (called the "route handler"), without executing it.
the foreach loop stores successively the following values into the $file variable: index.html, user.htm and user.htm (again). Therefore, at the end of the loop, $file holds user.htm.
once you call $f3->run(), the framework executes the route handler matching the current route, which itself refers to the global $file variable, holding user.htm.
Generally, you shouldn't be using the global keyword. That will just create unexpected issues, just as the one you've faced. Also that doesn't help for code maintainability.
I advise you to read the docs about the use keyword to understand how Bryan Velastegui's code is working.