Symfony Local Web Server
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Symfony Local Web Server
You can run Symfony applications with any web server (Apache, nginx, the internal PHP web server, etc.). However, Symfony provides its own web server to make you more productive while developing your applications.
Although this server is not intended for production use, it supports HTTP/2, TLS/SSL, automatic generation of security certificates, local domains, and many other features that sooner or later you'll need when developing web projects. Moreover, the server is not tied to Symfony and you can also use it with any PHP application and even with HTML or single page applications.
Installation
The Symfony server is part of the symfony
binary created when you
install Symfony and has support for Linux, macOS and Windows.
Note
You can view and contribute to the Symfony CLI source in the symfony-cli/symfony-cli GitHub repository.
Getting Started
The Symfony server is started once per project, so you may end up with several instances (each of them listening to a different port). This is the common workflow to serve a Symfony project:
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$ cd my-project/
$ symfony server:start
[OK] Web server listening on http://127.0.0.1:....
...
# Now, browse the given URL, or run this command:
$ symfony open:local
Running the server this way makes it display the log messages in the console, so you won't be able to run other commands at the same time. If you prefer, you can run the Symfony server in the background:
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$ cd my-project/
# start the server in the background
$ symfony server:start -d
# continue working and running other commands...
# show the latest log messages
$ symfony server:log
Enabling PHP-FPM
Note
PHP-FPM must be installed locally for the Symfony server to utilize.
When the server starts, it checks for web/index_dev.php
, web/index.php
,
public/app_dev.php
, public/app.php
in that order. If one is found, the
server will automatically start with PHP-FPM enabled. Otherwise the server will
start without PHP-FPM and will show a Page not found
page when trying to
access a .php
file in the browser.
Tip
When an index.html
and a front controller like e.g. index.php
are
both present the server will still start with PHP-FPM enabled but the
index.html
will take precedence over the front controller. This means
when an index.html
file is present in public
or web
, it will be
displayed instead of the index.php
which would show e.g. the Symfony
application.
Enabling TLS
Browsing the secure version of your applications locally is important to detect problems with mixed content early, and to run libraries that only run in HTTPS. Traditionally this has been painful and complicated to set up, but the Symfony server automates everything. First, run this command:
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$ symfony server:ca:install
This command creates a local certificate authority, registers it in your system
trust store, registers it in Firefox (this is required only for that browser)
and creates a default certificate for localhost
and 127.0.0.1
. In other
words, it does everything for you.
Before browsing your local application with HTTPS instead of HTTP, restart its server stopping and starting it again.
Different PHP Settings Per Project
Selecting a Different PHP Version
If you have multiple PHP versions installed on your computer, you can tell
Symfony which one to use creating a file called .php-version
at the project
root directory:
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$ cd my-project/
# use a specific PHP version
$ echo 7.4 > .php-version
# use any PHP 8.x version available
$ echo 8 > .php-version
Tip
The Symfony server traverses the directory structure up to the root
directory, so you can create a .php-version
file in some parent
directory to set the same PHP version for a group of projects under that
directory.
Run the command below if you don't remember all the PHP versions installed on your computer:
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$ symfony local:php:list
# You'll see all supported SAPIs (CGI, FastCGI, etc.) for each version.
# FastCGI (php-fpm) is used when possible; then CGI (which acts as a FastCGI
# server as well), and finally, the server falls back to plain CGI.
Overriding PHP Config Options Per Project
You can change the value of any PHP runtime config option per project by creating a
file called php.ini
at the project root directory. Add only the options you want
to override:
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$ cd my-project/
# this project only overrides the default PHP timezone
$ cat php.ini
[Date]
date.timezone = Asia/Tokyo
Running Commands with Different PHP Versions
When running different PHP versions, it is useful to use the main symfony
command as a wrapper for the php
command. This allows you to always select
the most appropriate PHP version according to the project which is running the
commands. It also loads the env vars automatically, which is important when
running non-Symfony commands:
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# runs the command with the default PHP version
$ php -r "..."
# runs the command with the PHP version selected by the project
# (or the default PHP version if the project didn't select one)
$ symfony php -r "..."
Local Domain Names
By default, projects are accessible at some random port of the 127.0.0.1
local IP. However, sometimes it is preferable to associate a domain name to them:
- It's more convenient when you work continuously on the same project because port numbers can change but domains don't;
- The behavior of some applications depend on their domains/subdomains;
- To have stable endpoints, such as the local redirection URL for OAuth2.
Setting up the Local Proxy
Local domains are possible thanks to a local proxy provided by the Symfony server. If this is the first time you run the proxy, you must configure it as follows:
Open the proxy settings of your operating system:
- Set the following URL as the value of the Automatic Proxy Configuration:
http://127.0.0.1:7080/proxy.pac
Now run this command to start the proxy:
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$ symfony proxy:start
If the proxy doesn't work as explained in the following sections, check these:
- Some browsers (e.g. Chrome) require to re-apply proxy settings (clicking on
Re-apply settings
button on thechrome://net-internals/#proxy
page) or a full restart after starting the proxy. Otherwise, you'll see a "This webpage is not available" error (ERR_NAME_NOT_RESOLVED
); - Some Operating Systems (e.g. macOS) don't apply by default the proxy settings
to local hosts and domains. You may need to remove
*.local
and/or other IP addresses from that list.
Defining the Local Domain
By default, Symfony proposes .wip
(for Work in Progress) for the local
domains. You can define a local domain for your project as follows:
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$ cd my-project/
$ symfony proxy:domain:attach my-domain
If you have installed the local proxy as explained in the previous section, you
can now browse https://my-domain.wip
to access your local project with the
new custom domain.
Tip
Browse the http://127.0.0.1:7080 URL to get the full list of local project directories, their custom domains, and port numbers.
You can also add a wildcard domain:
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$ symfony proxy:domain:attach "*.my-domain"
So it will match all subdomains like https://admin.my-domain.wip
, https://other.my-domain.wip
...
When running console commands, add the https_proxy
env var to make custom
domains work:
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# Example with curl
$ https_proxy=$(symfony proxy:url) curl https://my-domain.wip
# Example with Blackfire and curl
$ https_proxy=$(symfony proxy:url) blackfire curl https://my-domain.wip
# Example with Cypress
$ https_proxy=$(symfony proxy:url) ./node_modules/bin/cypress open
Note
Although env var names are always defined in uppercase, the https_proxy
env var is treated differently than other env vars and its name must be
spelled in lowercase.
Tip
If you prefer to use a different TLD, edit the ~/.symfony5/proxy.json
file (where ~
means the path to your user directory) and change the
value of the tld
option from wip
to any other TLD.
Long-Running Commands
Long-running commands, such as the ones that compile front-end web assets, block
the terminal and you can't run other commands at the same time. The Symfony
server provides a run
command to wrap them as follows:
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# compile Webpack assets using Symfony Encore ... but do that in the
# background to not block the terminal
$ symfony run -d yarn encore dev --watch
# continue working and running other commands...
# from time to time, check the command logs if you want
$ symfony server:log
# and you can also check if the command is still running
$ symfony server:status
Web server listening on ...
Command "yarn ..." running with PID ...
# stop the web server (and all the associated commands) when you are finished
$ symfony server:stop
Configuration file
Caution
This feature is experimental and could change or be removed at any time without prior notice.
There are several options that you can set using a .symfony.local.yaml
config file:
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# Sets domain1.wip and domain2.wip for the current project
proxy:
domains:
- domain1
- domain2
http:
document_root: public/ # Path to the project document root
passthru: index.php # Project passthru index
port: 8000 # Force the port that will be used to run the server
preferred_port: 8001 # Preferred HTTP port [default: 8000]
p12: path/to/p12_cert # Name of the file containing the TLS certificate to use in p12 format
allow_http: true # Prevent auto-redirection from HTTP to HTTPS
no_tls: true # Use HTTP instead of HTTPS
daemon: true # Run the server in the background
use_gzip: true # Toggle GZIP compression
Caution
Setting domains in this configuration file will override any domains you set
using the proxy:domain:attach
command for the current project when you start
the server.
Configuring Workers
If you like some processes to start automatically, along with the webserver
(symfony server:start
), you can set them in the YAML configuration file:
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# .symfony.local.yaml
workers:
# built-in command that builds and watches front-end assets
# yarn_encore_watch:
# cmd: ['yarn', 'encore', 'dev', '--watch']
yarn_encore_watch: ~
# built-in command that starts messenger consumer
# messenger_consume_async:
# cmd: ['symfony', 'console', 'messenger:consume', 'async']
# watch: ['config', 'src', 'templates', 'vendor']
messenger_consume_async: ~
# you can also add your own custom commands
build_spa:
cmd: ['yarn', '--cwd', './spa/', 'dev']
Docker Integration
The local Symfony server provides full Docker integration for projects that use it. To learn more about Docker & Symfony, see Using Docker with Symfony.
When the web server detects that Docker Compose is running for the project, it automatically exposes some environment variables.
Via the docker-compose
API, it looks for exposed ports used for common
services. When it detects one it knows about, it uses the service name to
expose environment variables.
Consider the following configuration:
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# docker-compose.yaml
services:
database:
ports: [3306]
The web server detects that a service exposing port 3306
is running for the
project. It understands that this is a MySQL service and creates environment
variables accordingly with the service name (database
) as a prefix:
DATABASE_URL
, DATABASE_HOST
, ...
If the service is not in the supported list below, generic environment
variables are set: PORT
, IP
, and HOST
.
If the docker-compose.yaml
names do not match Symfony's conventions, add a
label to override the environment variables prefix:
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# docker-compose.yaml
services:
db:
ports: [3306]
labels:
com.symfony.server.service-prefix: 'DATABASE'
In this example, the service is named db
, so environment variables would be
prefixed with DB_
, but as the com.symfony.server.service-prefix
is set
to DATABASE
, the web server creates environment variables starting with
DATABASE_
instead as expected by the default Symfony configuration.
Here is the list of supported services with their ports and default Symfony prefixes:
Service | Port | Symfony default prefix |
---|---|---|
MySQL | 3306 | DATABASE_ |
PostgreSQL | 5432 | DATABASE_ |
Redis | 6379 | REDIS_ |
Memcached | 11211 | MEMCACHED_ |
RabbitMQ | 5672 | RABBITMQ_ (set user and pass via Docker RABBITMQ_DEFAULT_USER and RABBITMQ_DEFAULT_PASS env var) |
Elasticsearch | 9200 | ELASTICSEARCH_ |
MongoDB | 27017 | MONGODB_ (set the database via a Docker MONGO_DATABASE env var) |
Kafka | 9092 | KAFKA_ |
MailCatcher | 1025/1080 or 25/80 | MAILER_ |
Blackfire | 8707 | BLACKFIRE_ |
Mercure | 80 | Always exposes MERCURE_PUBLIC_URL and MERCURE_URL (only works with the dunglas/mercure Docker image) |
You can open web management interfaces for the services that expose them:
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$ symfony open:local:webmail
$ symfony open:local:rabbitmq
Or click on the links in the "Server" section of the web debug toolbar.
Tip
To debug and list all exported environment variables, run symfony
var:export --debug
.
Tip
For some services, the web server also exposes environment variables
understood by CLI tools related to the service. For instance, running
symfony run psql
will connect you automatically to the PostgreSQL server
running in a container without having to specify the username, password, or
database name.
When Docker services are running, browse a page of your Symfony application and check the "Symfony Server" section in the web debug toolbar; you'll see that "Docker Compose" is "Up".
Note
If you don't want environment variables to be exposed for a service, set
the com.symfony.server.service-ignore
label to true
:
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# docker-compose.yaml
services:
db:
ports: [3306]
labels:
com.symfony.server.service-ignore: true
If your Docker Compose file is not at the root of the project, use the
COMPOSE_FILE
and COMPOSE_PROJECT_NAME
environment variables to define
its location, same as for docker-compose
:
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# start your containers:
COMPOSE_FILE=docker/docker-compose.yaml COMPOSE_PROJECT_NAME=project_name docker-compose up -d
# run any Symfony CLI command:
COMPOSE_FILE=docker/docker-compose.yaml COMPOSE_PROJECT_NAME=project_name symfony var:export
Note
If you have more than one Docker Compose file, you can provide them all
separated by :
as explained in the Docker compose CLI env var reference.
Caution
When using the Symfony binary with php bin/console
(symfony console ...
),
the binary will always use environment variables detected via Docker and will
ignore local environment variables.
For example if you set up a different database name in your .env.test
file
(DATABASE_URL=mysql://db_user:db_password@127.0.0.1:3306/test
) and if you run
symfony console doctrine:database:drop --force --env=test
, the command will drop the database
defined in your Docker configuration and not the "test" one.
Platform.sh Integration
The local Symfony server provides full, but optional, integration with Platform.sh, a service optimized to run your Symfony applications on the cloud. It provides features such as creating environments, backups/snapshots, and even access to a copy of the production data from your local machine to help debug any issues.