Extract Symfony routing configuration from a Silex application

dump_routes.php

#!/usr/bin/env php
<?php

use Silex\Application;
use Symfony\Component\Routing\Route;
use Symfony\Component\Routing\RouteCompiler;
use Symfony\Component\Yaml\Yaml;

require_once __DIR__ . '/vendor/autoload.php';

class RouteDumper
{
    public static function dump(Application $app)
    {
        $app->boot();
        $app->flush();

        foreach ($app['routes'] as $name => $route) {
            self::dumpRoute($name, $route);
        }
    }

    private static function dumpRoute(string $name, Route $route)
    {
        $dumpArray = ['path' => $route->getPath()];

        if ($route->getMethods()) {
            $dumpArray['methods'] = $route->getMethods();
        }

        $defaults = $route->getDefaults();

        if (isset($defaults['_controller'])) {
            $dumpArray['controller'] = $defaults['_controller'];
            unset($defaults['_controller']);
        }

        if ($defaults) {
            $dumpArray['defaults'] = $defaults;
        }

        if ($route->getRequirements()) {
            $dumpArray['requirements'] = $route->getRequirements();
        }

        $options = $route->getOptions();
        if (isset($options['compiler_class']) && RouteCompiler::class === $options['compiler_class']) {
            unset($options['compiler_class']);
        }

        if ($options) {
            $dumpArray['options'] = $route->getOptions();
        }

        if ($route->getHost()) {
            $dumpArray['host'] = $route->getHost();
        }

        if ($route->getSchemes()) {
            $dumpArray['schemes'] = $route->getSchemes();
        }

        if ($route->getCondition()) {
            $dumpArray['condition'] = $route->getCondition();
        }

        echo Yaml::dump([$name => $dumpArray]) . "\n";
    }
}

// Initialize your application here.
$app = new Application();

RouteDumper::dump($app);

note that this won't work if you use closures as controllers (as they cannot be dumped to YAML)

@stof Correct. Those closure controllers should be converted to classes first, if you want to use this script. Also, any route middlewares need to be removed first.