How to Use the Apache Router¶
Symfony, while fast out of the box, also provides various ways to increase that speed with a little bit of tweaking. One of these ways is by letting Apache handle routes directly, rather than using Symfony for this task.
Change Router Configuration Parameters¶
To dump Apache routes you must first tweak some configuration parameters to tell Symfony to use the ApacheUrlMatcher instead of the default one:
- YAML
# app/config/config_prod.yml parameters: router.options.matcher.cache_class: ~ # disable router cache router.options.matcher_class: Symfony\Component\Routing\Matcher\ApacheUrlMatcher
- XML
<!-- app/config/config_prod.xml --> <parameters> <parameter key="router.options.matcher.cache_class">null</parameter> <!-- disable router cache --> <parameter key="router.options.matcher_class"> Symfony\Component\Routing\Matcher\ApacheUrlMatcher </parameter> </parameters>
- PHP
// app/config/config_prod.php $container->setParameter('router.options.matcher.cache_class', null); // disable router cache $container->setParameter( 'router.options.matcher_class', 'Symfony\Component\Routing\Matcher\ApacheUrlMatcher' );
小技巧
Note that ApacheUrlMatcher extends UrlMatcher so even if you don’t regenerate the mod_rewrite rules, everything will work (because at the end of ApacheUrlMatcher::match() a call to parent::match() is done).
Generating mod_rewrite Rules¶
To test that it’s working, create a very basic route for the AppBundle:
- YAML
# app/config/routing.yml hello: path: /hello/{name} defaults: { _controller: AppBundle:Demo:hello }
- XML
<!-- app/config/routing.xml --> <route id="hello" path="/hello/{name}"> <default key="_controller">AppBundle:Demo:hello</default> </route>
- PHP
// app/config/routing.php $collection->add('hello', new Route('/hello/{name}', array( '_controller' => 'AppBundle:Demo:hello', )));
Now generate the mod_rewrite rules:
$ php app/console router:dump-apache -e=prod --no-debug
Which should roughly output the following:
# skip "real" requests
RewriteCond %{REQUEST_FILENAME} -f
RewriteRule .* - [QSA,L]
# hello
RewriteCond %{REQUEST_URI} ^/hello/([^/]+?)$
RewriteRule .* app.php [QSA,L,E=_ROUTING__route:hello,E=_ROUTING_name:%1,E=_ROUTING__controller:AppBundle\:Demo\:hello]
You can now rewrite web/.htaccess to use the new rules, so with this example it should look like this:
<IfModule mod_rewrite.c>
RewriteEngine On
# skip "real" requests
RewriteCond %{REQUEST_FILENAME} -f
RewriteRule .* - [QSA,L]
# hello
RewriteCond %{REQUEST_URI} ^/hello/([^/]+?)$
RewriteRule .* app.php [QSA,L,E=_ROUTING__route:hello,E=_ROUTING_name:%1,E=_ROUTING__controller:AppBundle\:Demo\:hello]
</IfModule>
注解
The procedure above should be done each time you add/change a route if you want to take full advantage of this setup.
That’s it! You’re now all set to use Apache routes.
Additional Tweaks¶
To save a little bit of processing time, change occurrences of Request to ApacheRequest in web/app.php:
// web/app.php
require_once __DIR__.'/../app/bootstrap.php.cache';
require_once __DIR__.'/../app/AppKernel.php';
// require_once __DIR__.'/../app/AppCache.php';
use Symfony\Component\HttpFoundation\ApacheRequest;
$kernel = new AppKernel('prod', false);
$kernel->loadClassCache();
// $kernel = new AppCache($kernel);
$kernel->handle(ApacheRequest::createFromGlobals())->send();