Here's the router that I use for the builtin php webserver that serves assets from the filesystem if they exist and otherwise performs a rewrite to an index.php file.
Run using:
php -S localhost:8080 router.php
router.php:
<?php
chdir(__DIR__);
$filePath = realpath(ltrim($_SERVER["REQUEST_URI"], '/'));
if ($filePath && is_dir($filePath)){
// attempt to find an index file
foreach (['index.php', 'index.html'] as $indexFile){
if ($filePath = realpath($filePath . DIRECTORY_SEPARATOR . $indexFile)){
break;
}
}
}
if ($filePath && is_file($filePath)) {
// 1. check that file is not outside of this directory for security
// 2. check for circular reference to router.php
// 3. don't serve dotfiles
if (strpos($filePath, __DIR__ . DIRECTORY_SEPARATOR) === 0 &&
$filePath != __DIR__ . DIRECTORY_SEPARATOR . 'router.php' &&
substr(basename($filePath), 0, 1) != '.'
) {
if (strtolower(substr($filePath, -4)) == '.php') {
// php file; serve through interpreter
include $filePath;
} else {
// asset file; serve from filesystem
return false;
}
} else {
// disallowed file
header("HTTP/1.1 404 Not Found");
echo "404 Not Found";
}
} else {
// rewrite to our index file
include __DIR__ . DIRECTORY_SEPARATOR . 'index.php';
}
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