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Editor to share with you an example of the use of the Composer command, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Selfupdate

To update composer itself, execute composer selfupdate frequently to keep Composer up-to-date.

Composer selfupdate

Equivalent to

Composer self-updatedumpautoload

When we change the autoload in the composer.json file, we need to execute composer dumpautoload for the autoload to take effect immediately. Without having to execute the install or update command.

Composer dumpautoload

Equivalent to

Composer dump-autoload

The dumpautoload command has two common options:

-- optimize (- o): convert PSR-0/4 autoloading to classmap for faster loading. This is especially suitable for production environments, but it may take some time to run, so it is not currently the default setting.

-- no-dev: disable the autoload-dev rule.

Installcomposer install

Install the dependency package according to the dependency defined by the composer.lock (lock file) or composer.json file in the current directory.

The install command first checks whether the composer.lock lock file exists, and if so, it downloads the version specified in the composer.lock file, ignoring the definition in the composer.json file.

# View composer install help information composer install-h# install only the dependencies defined in require, but not the dependency composer install defined in require-dev-no-devupdate

If you want to update your dependency version, or if you modify the dependency in composer.json and want composer to update as defined in the composer.json file, use the update command.

Composer updaterequire

The require command is typically used to install a new dependency package and write the dependency to the composer.json file in the current directory.

If dependencies are added or changed in the composer.json file, the modified dependencies will be installed or updated.

Composer require

You can also specify the dependent packages that need to be installed directly in the command.

Composer require barryvdh/laravel-ide-helper

Installs the specified version of the dependent package.

Composer require barryvdh/laravel-ide-helper:1.0

-- the dev option corresponds to require-dev. If your dependency package is only used in the development environment, it is recommended to add the-- dev option.

Composer require-dev barryvdh/laravel-ide-helpercreate-project

You can use create-project to create a new project from an existing package.

It is equivalent to installing the package's dependencies to its own vendor directory after executing the git clone command.

This command has several common uses:

You can deploy your application quickly.

You can check out any resource pack and develop patches for it.

Multi-person development projects can be used to speed up the initialization of applications.

# install Laravel project composer create-project-- prefer-dist laravel/laravel blog 5.5.*

If no version number is specified, the latest version is installed by default.

-- prefer-dist: install from dist when packages are available.

Search

The search command can search for remote dependent packages, usually it only searches packages on packagist.org, and you can simply enter your search criteria.

Composer search monolog

-- only-name (- N) option to search for only the specified name (exact match).

Show

To list the installed dependent packages, you can use the show command.

Composer show

Lists all dependent packages on the mirror site.

Composer show-all

If you want to see the details of a specified dependent package, you can enter the package name.

Composer show monolog/monologconfig

The config command allows you to edit some basic settings of Composer, whether it's a local composer.json or a global config.json file.

View the global configuration information for Composer:

Composer config-g-- list

Syntax: config [options] [setting-key] [setting-value1]... [setting-valueN]

Setting-key is the name of the configuration option, and setting-value1 is the value of the configuration. You can use arrays as configuration values (such as github-protocols), and multiple setting-value is allowed.

For example, globally configure the domestic image of Composer:

# it is recommended to use Ali Cloud Composer full image composer config-g repo.packagist composer https://mirrors.aliyun.com/composer/

Options:

-- global (- g): manipulate the $COMPOSER_HOME/config.json global configuration file. If you do not specify this parameter, this command affects the composer.json file of the current project, or the file pointed to by the-- file parameter.

-- editor (- e): open the composer.json file using a text editor. The file of the current project is always opened by default. When the-- global parameter exists, the global config.json file is opened.

-- unset; removes the configuration option specified by setting-key.

-- list (- l): view a list of current configuration options. When the-- global parameter exists, a list of global configuration options is displayed.

-- file= "..." (- f): operates on a specified file, not composer.json. It cannot be used with the-- global parameter.

Run-script

The run-script command, which can be used to execute the script manually, only needs to specify the name of the script.

Suppose the following script exists in composer.json.

{"scripts": {"post-update-cmd": "MyVendor\\ MyClass::postUpdate", "post-package-install": ["MyVendor\\ MyClass::postPackageInstall"], "post-install-cmd": ["MyVendor\\ MyClass::warmCache", "phpunit-c app/"]}

Run all scripts defined under the post-install-cmd event:

Composer run-script post-install-cmd above are all the contents of this article entitled "examples of the use of Composer commands". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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