I’ve never had any issues installing Symfony 2.2.x with Composer; I simply copied the stable version from http://symfony.com/download.
composer create-project symfony/framework-standard-edition myproject/ 2.2.1
(I use Composer on a worldwide scale.) 2.3.0-RC1 has piqued my interest. I expected everything to go smoothly:
composer create-project symfony/framework-standard-edition mynewerproject/ 2.3.0-RC1
However, the following errors forced a shutdown:
Your requirements could not be resolved to an installable set of packages. Problem 1 - symfony/icu v1.2.0-RC1 requires lib-icu >=4.4 -> the requested linked library icu has the wrong version installed or is missing from your system, make sure to have the extension providing it. - symfony/icu v1.1.0-RC1 requires lib-icu >=3.8 -> the requested linked library icu has the wrong version installed or is missing from your system, make sure to have the extension providing it. - symfony/symfony v2.3.0-RC1 requires symfony/icu >=1.0,<2.0 -> satisfiable by symfony/icu[v1.1.0-RC1, v1.2.0-RC1]. - Installation request for symfony/symfony 2.3.* -> satisfiable by symfony/symfony[v2.3.0-RC1].
Do I need to make any changes to composer.json?
Installing and configuring the intl extension is a breeze. The Intl extension is included by default in PHP 5.3, but other distributions, such as MAMP, don’t, therefore you’ll need to install it. I used the acronym PEAR:
Asked by Mark Fox
The icu problem is caused by an out-of-date php-intl extension.
sudo aptitude install php5-intl // i.e. ubuntu brew install icu4c // osx
Make sure the extension is enabled and setup properly in php.ini as well.
(Hint: php-cli uses a different php.ini on occasion)
extension=intl.so ; *nix extension=php_intl.dll ; windows
intl.default_locale = en_utf8 intl.error_level = E_WARNING
If the extension has been successfully enabled, run phpinfo() and php -m from your terminal.
Use the following command to check your current intl versions from php:
Attention is no longer required ( symfony 2.3 has meanwhile been released )
Please add the @dev or @rc minimal stability flag to your dependent as follows:
composer create-project symfony/framework-standard-edition mynewerproject/ 2.3.*@dev
The composer default stability is stable, however the symfony 2.3 branch is currently not (it’s @rc). More information on stability flags can be found here.
Answered by Nicolai Fröhlich
Many programs will just support the English locale and will not require translation or php-intl. If this is the case, or if you are unable to install php-intl on your server, you can add symfony/icu 1.0 to your composer manually. json. php-intl is not required in version 1.0, but it is in version 1.1+.
If you don’t require translation capabilities:
$ php bin/composer.phar require symfony/icu ~1.0
If you try to install symfony/symfony 2.3 without this declaration, Composer may try to install symfony/icu 1.2, which will require you to install php-intl.
This is described in greater detail in the Symfony Intl Component’s documentation under “ICU and Deployment Problems.”
Answered by John Kary
This and other related difficulties have a solution here: ICU and Deployment Issues
Composer behavior should be sophisticated in selecting the appropriate icu-component:
There should be no problems installing Symfony 2.3 without the intl-extension (theoretically).
However, you may find yourself imprisoned if your development environment differs from your production environment, as described in this article:
If you don’t have root access to your production server, follow the steps in this article to fix it. (tinkering with composer.json)
I hope this additional information was as useful to you as it was to me in this unique scenario with several contexts.
Answered by tweini
Without intl, Mac OS Mavericks comes with PHP 5.4.17. To get this, you’ll need to take the following steps:
brew install icu4c sudo pecl install intl The path to the ICU libraries and headers is: /usr/local/opt/icu4c/ Edit /etc/php.ini and add extension=intl.so to the end.
Answered by lenybernard
This answer may or may not be the correct solution to this person’s problem, but it was the solution to my problem of the same name. By enabling the intl extension in php.ini and upgrading composer, I was able to resolve this issue for myself.
php composer.phar self-update
Remove the following comment from the php.ini file:
Also, comment out these two lines in (php.ini) below [intl]:
[intl] intl.default_locale = en_utf8 intl.error_level = E_WARNING
And restart apache2 of course. 🙂
Follow these steps if you’re using a Mac and have Homebrew installed:
$ brew install php54-intl
$ brew tap josegonzalez/php $ brew tap homebrew/dupes $ brew install josegonzalez/php/php55-intl $ sudo apachectl restart
Answered by Layton Everson
Post is based on https://stackoverflow.com/questions/16753105/problems-with-lib-icu-dependency-when-installing-symfony-2-3-x-via-composer