composer/doc/06-config.md

Config

This chapter will describe the config section of the composer.json schema.

process-timeout

Defaults to 300. The duration processes like git clones can run before Composer assumes they died out. You may need to make this higher if you have a slow connection or huge vendors.

use-include-path

Defaults to false. If true, the Composer autoloader will also look for classes in the PHP include path.

preferred-install

Defaults to auto and can be any of source, dist or auto. This option allows you to set the install method Composer will prefer to use. Can optionally be a hash of patterns for more granular install preferences.

{
    "config": {
        "preferred-install": {
            "my-organization/stable-package": "dist",
            "my-organization/*": "source",
            "partner-organization/*": "auto",
            "*": "dist"
        }
    }
}

Note: Order matters. More specific patterns should be earlier than more relaxed patterns. When mixing the string notation with the hash configuration in global and package configurations the string notation is translated to a * package pattern.

store-auths

What to do after prompting for authentication, one of: true (always store), false (do not store) and "prompt" (ask every time), defaults to "prompt".

github-protocols

Defaults to ["https", "ssh", "git"]. A list of protocols to use when cloning from github.com, in priority order. By default git is present but only if secure-http is disabled, as the git protocol is not encrypted. If you want your origin remote push URLs to be using https and not ssh (git@github.com:...), then set the protocol list to be only ["https"] and Composer will stop overwriting the push URL to an ssh URL.

github-oauth

A list of domain names and oauth keys. For example using {"github.com": "oauthtoken"} as the value of this option will use oauthtoken to access private repositories on github and to circumvent the low IP-based rate limiting of their API. Read more on how to get an OAuth token for GitHub.

gitlab-oauth

A list of domain names and oauth keys. For example using {"gitlab.com": "oauthtoken"} as the value of this option will use oauthtoken to access private repositories on gitlab.

disable-tls

Defaults to false. If set to true all HTTPS URLs will be tried with HTTP instead and no network level encryption is performed. Enabling this is a security risk and is NOT recommended. The better way is to enable the php_openssl extension in php.ini.

secure-http

Defaults to true. If set to true only HTTPS URLs are allowed to be downloaded via Composer. If you really absolutely need HTTP access to something then you can disable it, but using Let's Encrypt to get a free SSL certificate is generally a better alternative.

cafile

Location of Certificate Authority file on local filesystem. In PHP 5.6+ you should rather set this via openssl.cafile in php.ini, although PHP 5.6+ should be able to detect your system CA file automatically.

capath

If cafile is not specified or if the certificate is not found there, the directory pointed to by capath is searched for a suitable certificate. capath must be a correctly hashed certificate directory.

http-basic

A list of domain names and username/passwords to authenticate against them. For example using {"example.org": {"username": "alice", "password": "foo"} as the value of this option will let Composer authenticate against example.org.

Note: Authentication-related config options like http-basic and github-oauth can also be specified inside a auth.json file that goes besides your composer.json. That way you can gitignore it and every developer can place their own credentials in there.

platform

Lets you fake platform packages (PHP and extensions) so that you can emulate a production env or define your target platform in the config. Example: {"php": "5.4", "ext-something": "4.0"}.

vendor-dir

Defaults to vendor. You can install dependencies into a different directory if you want to. $HOME and ~ will be replaced by your home directory's path in vendor-dir and all *-dir options below.

bin-dir

Defaults to vendor/bin. If a project includes binaries, they will be symlinked into this directory.

data-dir

Defaults to C:\Users\<user>\AppData\Roaming\Composer on Windows, $XDG_DATA_HOME/composer on unix systems that follow the XDG Base Directory Specifications, and $home on other unix systems. Right now it is only used for storing past composer.phar files to be able to rollback to older versions. See also COMPOSER_HOME.

cache-dir

Defaults to C:\Users\<user>\AppData\Local\Composer on Windows, $XDG_CACHE_HOME/composer on unix systems that follow the XDG Base Directory Specifications, and $home/cache on other unix systems. Stores all the caches used by Composer. See also COMPOSER_HOME.

cache-files-dir

Defaults to $cache-dir/files. Stores the zip archives of packages.

cache-repo-dir

Defaults to $cache-dir/repo. Stores repository metadata for the composer type and the VCS repos of type svn, github and bitbucket.

cache-vcs-dir

Defaults to $cache-dir/vcs. Stores VCS clones for loading VCS repository metadata for the git/hg types and to speed up installs.

cache-files-ttl

Defaults to 15552000 (6 months). Composer caches all dist (zip, tar, ..) packages that it downloads. Those are purged after six months of being unused by default. This option allows you to tweak this duration (in seconds) or disable it completely by setting it to 0.

cache-files-maxsize

Defaults to 300MiB. Composer caches all dist (zip, tar, ..) packages that it downloads. When the garbage collection is periodically ran, this is the maximum size the cache will be able to use. Older (less used) files will be removed first until the cache fits.

bin-compat

Defaults to auto. Determines the compatibility of the binaries to be installed. If it is auto then Composer only installs .bat proxy files when on Windows. If set to full then both .bat files for Windows and scripts for Unix-based operating systems will be installed for each binary. This is mainly useful if you run Composer inside a linux VM but still want the .bat proxies available for use in the Windows host OS.

prepend-autoloader

Defaults to true. If false, the Composer autoloader will not be prepended to existing autoloaders. This is sometimes required to fix interoperability issues with other autoloaders.

autoloader-suffix

Defaults to null. String to be used as a suffix for the generated Composer autoloader. When null a random one will be generated.

optimize-autoloader

Defaults to false. If true, always optimize when dumping the autoloader.

sort-packages

Defaults to false. If true, the require command keeps packages sorted by name in composer.json when adding a new package.

classmap-authoritative

Defaults to false. If true, the Composer autoloader will only load classes from the classmap. Implies optimize-autoloader.

github-domains

Defaults to ["github.com"]. A list of domains to use in github mode. This is used for GitHub Enterprise setups.

github-expose-hostname

Defaults to true. If false, the OAuth tokens created to access the github API will have a date instead of the machine hostname.

gitlab-domains

Defaults to ["gitlab.com"]. A list of domains of GitLab servers. This is used if you use the gitlab repository type.

notify-on-install

Defaults to true. Composer allows repositories to define a notification URL, so that they get notified whenever a package from that repository is installed. This option allows you to disable that behaviour.

discard-changes

Defaults to false and can be any of true, false or "stash". This option allows you to set the default style of handling dirty updates when in non-interactive mode. true will always discard changes in vendors, while "stash" will try to stash and reapply. Use this for CI servers or deploy scripts if you tend to have modified vendors.

archive-format

Defaults to tar. Composer allows you to add a default archive format when the workflow needs to create a dedicated archiving format.

archive-dir

Defaults to .. Composer allows you to add a default archive directory when the workflow needs to create a dedicated archiving format. Or for easier development between modules.

Example:

{
    "config": {
        "archive-dir": "/home/user/.composer/repo"
    }
}

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