Composer has triggered a renaissance in the PHP community, it has changed the way we deal with other people’s code and it has changed the way we share our code. We are all slowly moving to using Composer, from Wordpress to Joomla and Drupal and frameworks in between. But many of us mistreat composer, follow outdated practices or simply lack a few tricks. In this session i’ll get you the low down on how to use composer the right way.

1. Composer
the right way
@rdohms
Rafael Dohms

2. photo: smileymanwithahat

5. photo: Rob Allen

6. photo: 18millionpixels

7. Library Publisher
photo: 18millionpixels

8. Library Publisher
Library Consumer
photo: 18millionpixels

9. Library Publisher
Library
Library Consumer
photo: 18millionpixels

10. Library Publisher
Library
Library Consumer
Packagist
photo: 18millionpixels

11. photo: 18millionpixels

12. {
"require": {
"monolog/monolog": “2.0”
}
}
photo: 18millionpixels

13. {
"require": {
"monolog/monolog": “2.0”
}
}
{
"name": “monolog/monolog”
...
}
photo: 18millionpixels

14. {
"require": {
"monolog/monolog": “2.0”
}
}
{
"name": “monolog/monolog”
...
}
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- The requested package monolog/monolog could not be found in any version, there may be a typo in the package name.
Potential causes:
- A typo in the package name
- The package is not available in a stable-enough version according to your minimum-stability setting
see <https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion> for more details.
Read <http://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.
Installation failed, reverting ./composer.json to its original content.
photo: 18millionpixels

15. {
"require": {
"monolog/monolog": “2.0”
}
}
{
"name": “monolog/monolog”
...
}
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- The requested package monolog/monolog could not be found in any version, there may be a typo in the package name.
Potential causes:
- A typo in the package name
- The package is not available in a stable-enough version according to your minimum-stability setting
see <https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion> for more details.
Read <http://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.
Installation failed, reverting ./composer.json to its original content.
___
~1.1
photo: 18millionpixels

16. {
"require": {
"monolog/monolog": “2.0”
}
}
{
"name": “monolog/monolog”
...
}
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- The requested package monolog/monolog could not be found in any version, there may be a typo in the package name.
Potential causes:
- A typo in the package name
- The package is not available in a stable-enough version according to your minimum-stability setting
see <https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion> for more details.
Read <http://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.
Installation failed, reverting ./composer.json to its original content.
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
- Installing psr/log (1.0.0)
Loading from cache
- Installing monolog/monolog (1.11.0)
Downloading: 100%
monolog/monolog suggests installing graylog2/gelf-php (Allow sending log messages to a GrayLog2 server)
[...]
monolog/monolog suggests installing ext-mongo (Allow sending log messages to a MongoDB server)
monolog/monolog suggests installing aws/aws-sdk-php (Allow sending log messages to AWS services like DynamoDB)
monolog/monolog suggests installing rollbar/rollbar (Allow sending log messages to Rollbar)
Writing lock file
Generating autoload files
___
~1.1
photo: 18millionpixels

17. composer

18. composercomposer.json!

19. composercomposer.json!
composer.lock!

20. composercomposer.json!
composer.lock!

21. discovery Packagist
"
composercomposer.json!
composer.lock!

22. discovery sourcePackagist
"
Repository
#
composercomposer.json!
composer.lock!

23. discovery source
installation
Packagist
"
Vendor
Folder
$
Repository
#
composercomposer.json!
composer.lock!

24. 1 916 785 006

25. 1 916 785 006+

26. 1 916 785 006one billion, nine hundred and sixteen million,
seven hundred and eighty-five thousand, six.
+

27. Stable!Go tell @seldaek, @naderman and the entire
composer team, thank you for all the
amazing work!

28. $ composer self-update
Production
$ composer self-update --snapshot
Development
$ composer self-update --preview
CI / Build

29. $ composer init
Library Publisher

30. $ composer init
Library Publisher
$ composer require <vendor>/<package>
Library Consumer

31. $ composer require monolog/monolog
Tip

32. $ composer require monolog/monolog
Tip
Using version ~1.11 for monolog/monolog

33. $ composer require monolog/monolog --sort-packages
Tip

34. $ composer remove monolog/monolog
Tip
removes packages and dependencies by default
— beta 2

35. Library Publishers
Composer for

36. Library Publisher Unique vendor names
vendor / package

37. Library Publisher Unique vendor names
pick your own
unique vendor

38. Library Publisher Unique vendor names
or join a collective

39. README!
CHANGELOG%
LICENSE&
Library Publisher What’s in your library?

40. README!
CHANGELOG%
LICENSE&
Library Publisher What’s in your library?
' What problem does it solve?
' Usage examples
' Install instructions
' How can I contribute?

41. README!
CHANGELOG%
LICENSE&
Library Publisher What’s in your library?
' List relevant changes
' Make BC breaks prominent
' Show examples of how to upgrade
' What problem does it solve?
' Usage examples
' Install instructions
' How can I contribute?

42. README!
CHANGELOG%
LICENSE&
Library Publisher What’s in your library?
' List relevant changes
' Make BC breaks prominent
' Show examples of how to upgrade
' Pick one that reflects your values
' choosealicense.com can help
' What problem does it solve?
' Usage examples
' Install instructions
' How can I contribute?

43. Library Publisher Semantic Versioning
1 . 2 3.major minor patch

44. Library Publisher Semantic Versioning
1 . 2 3.major minor patch
Bug Fixes

45. Library Publisher Semantic Versioning
1 . 2 3.major minor patch
New Features Bug Fixes

46. Library Publisher Semantic Versioning
1 . 2 3.major minor patch
API / BC
Breaks
New Features Bug Fixes

47. Library Publisher Tagging
Please, tag your
releases.

48. Library Publisher Tagging
Please, tag your
releases.
often!

49. Library Publisher “I'm out"
photo: nickwebb

50. Library Publisher “I'm out"

51. Library Publisher “I'm out"
Click here and provide an alternative

52. Library Publisher “I'm out"

53. Pick the
correct
version
Library Publisher Pick a Version

54. *the asterisk
Library Publisher Pick a Version

55. *the asterisk○Library Publisher Pick a Version

56. ~the tilde
Library Publisher Pick a Version

57. ~1.2
>=1.2.0, <2.0.0
Library Publisher Pick a Version

58. ~1.2
>=1.2.0, <2.0.0
Library Publisher Pick a Version
)

59. ~1.2.3
>=1.2.3, <1.3
Library Publisher Pick a Version

60. ~1.2.3
>=1.2.3, <1.3
Library Publisher Pick a Version
)

61. "require": {
"zendframework/zend-stdlib": “2.1.*”,
"zendframework/zend-servicemanager": "2.1.*",
},
“require-dev": {
“phpunit/phpunit": “~3.7”
}
Library Publisher Pick a Version
"require": {
"zendframework/zend-stdlib": “~2.3”,
"zendframework/zend-servicemanager": “~2.3",
},
“require-dev": {
“phpunit/phpunit": “~4”
}
3rd party library
Your application

62. "require": {
"zendframework/zend-stdlib": “2.1.*”,
"zendframework/zend-servicemanager": "2.1.*",
},
“require-dev": {
“phpunit/phpunit": “~3.7”
}
Library Publisher Pick a Version
"require": {
"zendframework/zend-stdlib": “~2.3”,
"zendframework/zend-servicemanager": “~2.3",
},
“require-dev": {
“phpunit/phpunit": “~4”
}
3rd party library
Your application
*

63. "require": {
"zendframework/zend-stdlib": “2.1.*”,
"zendframework/zend-servicemanager": "2.1.*",
},
“require-dev": {
“phpunit/phpunit": “~3.7”
}
Library Publisher Pick a Version
"require": {
"zendframework/zend-stdlib": “~2.3”,
"zendframework/zend-servicemanager": “~2.3",
},
“require-dev": {
“phpunit/phpunit": “~4”
}
3rd party library
Your application
*

64. "require": {
"zendframework/zend-stdlib": “2.1.*”,
"zendframework/zend-servicemanager": "2.1.*",
},
“require-dev": {
“phpunit/phpunit": “~3.7”
}
Library Publisher Pick a Version
"require": {
"zendframework/zend-stdlib": “~2.3”,
"zendframework/zend-servicemanager": “~2.3",
},
“require-dev": {
“phpunit/phpunit": “~4”
}
3rd party library
Your application
*
~2.1

65. Yo @rdohms, I’m
really happy for you and
I’m gonna let you finish, but
the tilde operator is
totally old news.

66. ^the caret
Library Publisher Pick a Version

67. 1.2.3
>=1.2.3, <2.0.0
Library Publisher Pick a Version
^

68. 1.2.3
>=1.2.3, <2.0.0
Library Publisher Pick a Version
)
^
)

69. 0.3.0
>=0.3.0, <0.4.0
Library Publisher Pick a Version
^

70. 0.3.0
>=0.3.0, <0.4.0
Library Publisher Pick a Version
^
)

71. 0.3.0
>=0.3.0, <0.4.0
Library Publisher Pick a Version
^
)
Major Version Zero

72. Library Consumers
Composer for

73. Library Consumer Install or update?
install or update?

74. Library Consumer Install or update?
Make sure you have
installed the last
updates from other
developers.
?
install updateor

75. Library Consumer Install or update?
Make sure you have
installed the last
updates from other
developers.
?
install updateor

76. Library Consumer Install or update?
Deploying a new
release of your
application to
production.
?
install updateor

77. Library Consumer Install or update?
Deploying a new
release of your
application to
production.
?
install updateor

78. Library Consumer Install or update?
Checked out a new
project and want to
start coding.
?
install updateor

79. Library Consumer Install or update?
Checked out a new
project and want to
start coding.
?
install updateor

80. Library Consumer Install or update?
Grab new versions for
the dependencies of
your project.
?
install updateor

81. Library Consumer Install or update?
Grab new versions for
the dependencies of
your project.
?
install updateor

82. Your application
$
Public
Repository
#
Library Consumer Install or update?
composer.lock!
composer install
composer update

83. Your application
$
Public
Repository
#
Library Consumer Install or update?
composer.lock!
read
composer install
composer update

84. Your application
$
Public
Repository
#
Library Consumer Install or update?
composer.lock!
read grab version
composer install
composer update

85. Your application
$
Public
Repository
#
Library Consumer Install or update?
composer.lock!
read grab version
check latest compatible release
composer install
composer update

86. Your application
$
Public
Repository
#
Library Consumer Install or update?
composer.lock!
read grab version
check latest compatible release
update
composer install
composer update

87. Your application
$
Public
Repository
#
Library Consumer Install or update?
composer.lock!
read grab version
check latest compatible release
update
composer install
composer update
no lock file? composer update
since beta2

88. Library Consumer Install or update?
commit your lock file

89. Tip
since beta1

90. $ composer update —interactive (-i)
Tip
since beta1

91. Tip
since beta1

92. $ composer why-not <package>
doctrine/doctrine-bundle 1.6.2 requires symfony/framework-bundle (~2.3|~3.0)
doctrine/doctrine-cache-bundle 1.3.0 requires symfony/doctrine-bridge (~2.2|~3.0)
doctrine/doctrine-fixtures-bundle 2.3.0 requires symfony/doctrine-bridge (~2.3|~3.0)
doctrine/doctrine-migrations-bundle dev-master requires symfony/framework-bundle (~2.3|~3.0)
doctrine/migrations dev-master requires symfony/yaml (~2.3|~3.0)
doctrine/orm v2.5.4 requires symfony/console (~2.5|~3.0)
friendsofsymfony/rest-bundle 1.7.7 requires symfony/http-kernel (^2.3.24|~3.0)
incenteev/composer-parameter-handler v2.1.2 requires symfony/yaml (~2.3|~3.0)
jms/serializer-bundle 1.1.0 requires symfony/framework-bundle (~2.3|~3.0)
knplabs/knp-paginator-bundle 2.5.1 requires symfony/framework-bundle (~2.3|~3.0)
kriswallsmith/assetic v1.3.2 requires symfony/process (~2.1|~3.0)
Tip
since beta1

93. Pick the
correct
version
Library Consumer Version Selection

94. Library Consumer Version Selection
dev-master

95. Library Consumer Version Selection

96. Library Consumer Version Selection

97. Library Consumer Using forks
found a bug?

98. Library Consumer Using forks
$ composer install --prefer-source
Tip

99. Library Consumer Using forks

100. Library Consumer Using forks
patch it,

101. Library Consumer Using forks
patch it,
fork it,

102. Library Consumer Using forks
patch it,
fork it,
push it…

103. Library Consumer Using forks
patch it,
fork it,
push it…
wait for it.

104. Library Consumer Using forks
patch it,
fork it,
push it…
wait for it.

105. Library Consumer Using forks
symfony/symfony

106. Library Consumer Using forks
symfony/symfony
rdohms/symfony

107. Library Consumer Using forks
symfony/symfony
rdohms/symfony
"repositories": [
{
"type": "vcs",
"url": "https://github.com/rdohms/symfony"
}
]

108. Library Consumer Using forks
symfony/symfony
rdohms/symfony
"repositories": [
{
"type": "vcs",
"url": "https://github.com/rdohms/symfony"
}
]
+

109. Library Consumer Using forks
Do not put
forked repositories
on packagist
,

110. Library Consumer Using forks
"require": {
"symfony/symfony": "dev-my-patch as 2.5.0"
}
Tip

111. Library Consumer Composer and deployments
Composer
and
production

112. Library Consumer Composer and deployments
$ composer install --prefer-dist --no-dev --optimize-autoloader
,

113. Library Consumer Composer and deployments
$ composer install --prefer-dist --no-dev --optimize-autoloader
,

114. Library Consumer Composer and deployments
$ composer install --prefer-dist --no-dev --optimize-autoloader
,
- Install same versions
- Uses information defined in the composer.lock file

115. $ composer install --prefer-dist --no-dev --optimize-autoloader
Library Consumer Composer and deployments
,

116. $ composer install --prefer-dist --no-dev --optimize-autoloader
Library Consumer Composer and deployments
,
- Downloads distribution packages
- Can use local cache for previously downloaded
- No git required

117. $ composer install --prefer-dist --no-dev --optimize-autoloader
Library Consumer Composer and deployments
,

118. $ composer install --prefer-dist --no-dev --optimize-autoloader
Library Consumer Composer and deployments
,
- Avoids download unnecessary developer libraries

119. $ composer install --prefer-dist --no-dev --optimize-autoloader
Library Consumer Composer and deployments
,

120. $ composer install --prefer-dist --no-dev --optimize-autoloader
Library Consumer Composer and deployments
,
- Generates classmap from PSR-0/4 autoloaders
- Speeds up autoloading

121. Library Consumer Licensing
$ composer licenses
Name: __root__
Version: 1.0.0
Licenses: none
Dependencies:
doctrine/annotations v1.2.1 MIT
doctrine/cache v1.3.1 MIT
doctrine/collections v1.2 MIT
doctrine/common v2.4.2 MIT
doctrine/inflector v1.0 MIT
doctrine/lexer v1.0 MIT
psr/log 1.0.0 MIT
symfony/symfony v2.5.6 MIT
twig/twig v1.16.2 BSD-3-Clause
Tip

122. Library Consumer Simulating Environments
Tip
Production
Server
.
Development
Server
.

123. Library Consumer Simulating Environments
Tip
Production
Server
.
Development
Server
.PHP
7.0
PHP
5.6

124. Library Consumer Simulating Environments
"config": {
"platform": {
"php": “5.6.2”,
“ext-mongodb”: “1.1”
}
},
Tip
Production
Server
.
Development
Server
.PHP
7.0
PHP
5.6

125. Library Consumer Simulating Environments
$ composer install —-ignore-platform-reqs
Tip

126. Library Consumer Private Packages and Proxy
Satis and Toran

127. composer Packagist
"
Your application
$
Public
Repository
#
Library Consumer Private Packages and Proxy

128. composer
Packagist
"
Your application
$
Public
Repository
#
Satis / Toran
"
Private
Repository
/
proxy
Library Consumer Private Packages and Proxy

129. Library Consumer Private Packages and Proxy
toranproxy.com
private repos, automatic packagist proxy
and support composer development

130. Library Consumer Tooling
$ composer require jquery/jquery
How many of you?

131. Library Consumer Tooling

132. Library Consumer Tooling

133. Javascript only Developer
Library Consumer Tooling
0 my-js-library
1

134. Javascript only Developer
Library Consumer Tooling
0 my-js-library
! package.json
1

135. Javascript only Developer
Library Consumer Tooling
0 my-js-library
! package.json
! bower.json
1

136. Javascript only Developer
Library Consumer Tooling
0 my-js-library
! composer.json
! package.json
! bower.json
1

137. Javascript only Developer
Library Consumer Tooling
0 my-js-library
! composer.json
! package.json
! bower.json
! .gemspec
1

138. Javascript only Developer
Library Consumer Tooling
0 my-js-library
! composer.json
! package.json
! bower.json
! .gemspec
1
2
2

139. Library Consumer Tooling

140. Library Consumer Tooling
Right tool.
Right job.

141. Library Consumer One last thing
One last thing…

142. Library Consumer pickle!

143. Library Consumer pickle!
$ pickle install memcache
https://wiki.php.net/rfc/pickle
https://github.com/FriendsOfPHP/pickle

144. Thank you.
https://joind.in/talk/5113b
https://teespring.com/i-use-composer

145. Thank you.any questions?
3 http://slides.doh.ms
4 http://doh.ms
5 @rdohms
https://joind.in/talk/5113b
https://teespring.com/i-use-composer