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Project使用Symfony 2.8.2,PHP版本为5.6

我正在尝试安装DoctrineMigrationsBundle,并且composer因错误而失败:

Problem 1 - doctrine/doctrine-migrations-bundle 1.0.0 requires doctrine/migrations ~1.0@dev -> satisfiable by doctrine/migrations[v1.0.0, v1.1.0, v1.2.0, v1.2.1, v1.2.2, v1.3.0]. - doctrine/doctrine-migrations-bundle 1.0.1 requires doctrine/migrations ~1.0@dev -> satisfiable by doctrine/migrations[v1.0.0, v1.1.0, v1.2.0, v1.2.1, v1.2.2, v1.3.0]. - doctrine/doctrine-migrations-bundle 1.1.1 requires doctrine/migrations ~1.0 -> satisfiable by doctrine/migrations[v1.0.0, v1.1.0, v1.2.0, v1.2.1, v1.2.2, v1.3.0]. - doctrine/doctrine-migrations-bundle v1.1.0 requires doctrine/migrations ~1.0 -> satisfiable by doctrine/migrations[v1.0.0, v1.1.0, v1.2.0, v1.2.1, v1.2.2, v1.3.0]. - doctrine/migrations v1.3.0 requires php ^5.5|^7.0 -> your PHP version (5.5.28) or "config.platform.php" value does …