返答頂きありがとうございます。jsonが間違っているというより環境に問題がありそうだとは思っています。
環境
```
$ cat /etc/redhat-release
CentOS release 6.8 (Final)
$ php -v
PHP 5.6.26 (cli) (built: Sep 15 2016 14:57:05)
$ composer -V
Composer version 1.2.2 2016-11-03 17:43:15
```
詳細出力
```
$ composer install -vvv
Reading ./composer.json
Loading config file /home/user/.composer/config.json
Loading config file /home/user/.composer/auth.json
Loading config file ./composer.json
Checked CA file /etc/pki/tls/certs/ca-bundle.crt: valid
Executing command (/home/user/php_check): git branch --no-color --no-abbrev -v
Executing command (/home/user/php_check): git describe --exact-match --tags
Executing command (/home/user/php_check): git log --pretty="%H" -n1 HEAD
Failed to initialize global composer: Composer could not find the config file: /home/user/.composer/composer.json
To initialize a project, please create a composer.json file as described in the https://getcomposer.org/ "Getting Started" section
Running 1.2.2 (2016-11-03 17:43:15) with PHP 5.6.26 on Linux / 2.6.32-573.7.1.el6.x86_64
Loading composer repositories with package information
Downloading https://packagist.org/packages.json
Writing /home/user/.composer/cache/repo/https---packagist.org/packages.json into cache
Updating dependencies (including require-dev)
Reading /home/user/.composer/cache/repo/https---packagist.org/p-provider-2013.json from cache
Reading /home/user/.composer/cache/repo/https---packagist.org/p-provider-2014.json from cache
Reading /home/user/.composer/cache/repo/https---packagist.org/p-provider-2015.json from cache
Reading /home/user/.composer/cache/repo/https---packagist.org/p-provider-2016-01.json from cache
Downloading http://packagist.org/p/provider-2016-04%2460ba0ba968e33e5a85d3eecc609b1d814f8305dff699597a64ae41daea91bc82.json
Writing /home/user/.composer/cache/repo/https---packagist.org/p-provider-2016-04.json into cache
Downloading http://packagist.org/p/provider-2016-07%24fa068a7f3e0c6151ed61d238d88df81dabc9957aecc32a29c7cea250f88e76fe.json
Writing /home/user/.composer/cache/repo/https---packagist.org/p-provider-2016-07.json into cache
Downloading http://packagist.org/p/provider-2016-10%2440cd60db051f1a5f85554b707a7cb89faab5cd605385f45e2e422c4ffc5b15f8.json
Writing /home/user/.composer/cache/repo/https---packagist.org/p-provider-2016-10.json into cache
Reading /home/user/.composer/cache/repo/https---packagist.org/p-provider-archived.json from cache
Downloading http://packagist.org/p/provider-latest%24036c66e52ddd3c3a261f10c6a55d76cb688420f453720e05443754b7a02c1f5e.json
Writing /home/user/.composer/cache/repo/https---packagist.org/p-provider-latest.json into cache
Downloading http://packagist.org/p/phpmd/phpmd%24a6e16be774913df988a7ca5d5e6026bb82a11653c64dee650d48156e430a0719.json
Failed to decode response: zlib_decode(): data error
Retrying with degraded mode, check https://getcomposer.org/doc/articles/troubleshooting.md#degraded-mode for more info
Downloading http://packagist.org/p/phpmd/phpmd%24a6e16be774913df988a7ca5d5e6026bb82a11653c64dee650d48156e430a0719.json
Downloading http://packagist.org/p/phpmd/phpmd%24a6e16be774913df988a7ca5d5e6026bb82a11653c64dee650d48156e430a0719.json
Downloading http://packagist.org/p/phpmd/phpmd%24a6e16be774913df988a7ca5d5e6026bb82a11653c64dee650d48156e430a0719.json
[ErrorException]
zlib_decode(): data error
Exception trace:
() at phar:///usr/local/bin/composer/src/Composer/Util/RemoteFilesystem.php:388
Composer\Util\ErrorHandler::handle() at n/a:n/a
zlib_decode() at phar:///usr/local/bin/composer/src/Composer/Util/RemoteFilesystem.php:388
Composer\Util\RemoteFilesystem->get() at phar:///usr/local/bin/composer/src/Composer/Util/RemoteFilesystem.php:101
Composer\Util\RemoteFilesystem->getContents() at phar:///usr/local/bin/composer/src/Composer/Repository/ComposerRepository.php:646
Composer\Repository\ComposerRepository->fetchFile() at phar:///usr/local/bin/composer/src/Composer/Repository/ComposerRepository.php:332
Composer\Repository\ComposerRepository->whatProvides() at phar:///usr/local/bin/composer/src/Composer/DependencyResolver/Pool.php:204
Composer\DependencyResolver\Pool->computeWhatProvides() at phar:///usr/local/bin/composer/src/Composer/DependencyResolver/Pool.php:193
Composer\DependencyResolver\Pool->whatProvides() at phar:///usr/local/bin/composer/src/Composer/DependencyResolver/RuleSetGenerator.php:271
Composer\DependencyResolver\RuleSetGenerator->whitelistFromJobs() at phar:///usr/local/bin/composer/src/Composer/DependencyResolver/RuleSetGenerator.php:324
Composer\DependencyResolver\RuleSetGenerator->getRulesFor() at phar:///usr/local/bin/composer/src/Composer/DependencyResolver/Solver.php:214
Composer\DependencyResolver\Solver->solve() at phar:///usr/local/bin/composer/src/Composer/Installer.php:461
Composer\Installer->doInstall() at phar:///usr/local/bin/composer/src/Composer/Installer.php:216
Composer\Installer->run() at phar:///usr/local/bin/composer/src/Composer/Command/InstallCommand.php:135
Composer\Command\InstallCommand->execute() at phar:///usr/local/bin/composer/vendor/symfony/console/Command/Command.php:259
Symfony\Component\Console\Command\Command->run() at phar:///usr/local/bin/composer/vendor/symfony/console/Application.php:847
Symfony\Component\Console\Application->doRunCommand() at phar:///usr/local/bin/composer/vendor/symfony/console/Application.php:192
Symfony\Component\Console\Application->doRun() at phar:///usr/local/bin/composer/src/Composer/Console/Application.php:231
Composer\Console\Application->doRun() at phar:///usr/local/bin/composer/vendor/symfony/console/Application.php:123
Symfony\Component\Console\Application->run() at phar:///usr/local/bin/composer/src/Composer/Console/Application.php:104
Composer\Console\Application->run() at phar:///usr/local/bin/composer/bin/composer:43
require() at /usr/local/bin/composer:24
install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [--no-suggest] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--ignore-platform-reqs] [--] [<packages>]...
```
バッドをするには、ログインかつ
こちらの条件を満たす必要があります。
2016/11/13 14:17
2016/11/13 14:28
2016/11/13 14:30
2016/11/13 14:35 編集