Skip composer PHP requirement

For many commands, you can tell composer to bypass php version check, with parameter "--ignore-platform-reqs":

composer COMMAND --ignore-platform-reqs

this will bypass php version specification.

Be aware that the software may work or not: php version specification is there because somewhere in the code is needed at least the specified php version, so if you use that code the software will break.

I've found the option:

composer install --ignore-platform-reqs

Ignore platform requirements (php & ext- packages).

---

Edit: You can skip the platform checks with this, but Composer will fetch packages based on given PHP version then. So when you need composer to also emulate a PHP version during depedency resolving, you can (and should!) use this in your composer.json:

{
    "config": {
       "platform": {
           "php": "5.6.6"
       }
    }
}

https://getcomposer.org/doc/06-config.md#platform