unable to install phpdox using composer

[punramesh]

Command: composer global require theseer/phpdox

Error message: 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

• Installation request for theseer/phpdox ^0.11.2 -> satisfiable by theseer/phpdox[0.11.2].
• Conclusion: remove phpunit/php-timer 2.0.0
• Conclusion: don't install phpunit/php-timer 2.0.0
• theseer/phpdox 0.11.2 requires phpunit/php-timer ^1.0 -> satisfiable by phpunit/php-timer[1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9].
• Can only install one of: phpunit/php-timer[1.0.3, 2.0.0].
• Can only install one of: phpunit/php-timer[1.0.4, 2.0.0].
• Can only install one of: phpunit/php-timer[1.0.5, 2.0.0].
• Can only install one of: phpunit/php-timer[1.0.6, 2.0.0].
• Can only install one of: phpunit/php-timer[1.0.7, 2.0.0].
• Can only install one of: phpunit/php-timer[1.0.8, 2.0.0].
• Can only install one of: phpunit/php-timer[1.0.9, 2.0.0].
• Installation request for phpunit/php-timer (locked at 2.0.0) -> satisfiable by phpunit/php-timer[2.0.0].

Installation failed, reverting ./composer.json to its original content.

[theseer]

See https://github.com/theseer/phpdox/issues/328#issuecomment-372602708