Allow php 8

[holtkamp]

Allow installing this provider on PHP 8

[JaZo]

Nice work @holtkamp! However, I'd like to keep PHP 7.0 as minimum required version for now. Also don't forget to update CI config (.travis.yml and .scrutinizer.yml) to run tests on all supported PHP versions.

[holtkamp]

I am afraid 7.2 will be the minimum since PHPUnit requires / allows this and higher versions (required for PHP 8) since 8.5.12, I could give that a try...?

But 7.4 gives all the niceness of typing, etc, so that would be my suggestion. A lot of libraries use 7.4 as minimum now.

The Geocoder itself aims at 7.3:

/~https://github.com/geocoder-php/Geocoder/blob/3249d994244d30f591a71b1911ca936bd35f71b4/composer.json#L20

Also note that security fixes have not been supported anymore for 7.0 since january 2019

[JaZo]

I see supporting PHP 7.0 will need some workarounds and I agree it's not worth it. I'm aware of all the niceness in PHP 7.4, but for this one class library I don't feel the urge to have those available so then I'd like to go for PHP 7.2 as minimum.

[holtkamp]

Tried it with "php": "^7.2 || ^8.0" and "phpunit/phpunit": "^8.5" but then geocoder-php/provider-integration-tests is unable to install since none of the tagged versions allows php unit 8.5:

Problem 1
    - geocoder-php/provider-integration-tests 1.5.0 requires phpunit/phpunit ^9.5 -> satisfiable by phpunit/phpunit[9.5.0, 9.5.1, 9.5.x-dev] but these conflict with your requirements or minimum-stability.
    - geocoder-php/provider-integration-tests 1.4.1 requires phpunit/phpunit ^7.5 -> satisfiable by phpunit/phpunit[7.5.0, 7.5.1, 7.5.10, 7.5.11, 7.5.12, 7.5.13, 7.5.14, 7.5.15, 7.5.16, 7.5.17, 7.5.18, 7.5.19, 7.5.2, 7.5.20, 7.5.3, 7.5.4, 7.5.5, 7.5.6, 7.5.7, 7.5.8, 7.5.9] but these conflict with your requirements or minimum-stability.

The combination "php": "^7.3 || ^8.0" and "phpunit/phpunit": "^9.0" works and installs PHPUnit 9.5, so I guess the minimum version of PHP is forced to be 7.3...?

[JaZo]

The testsuite is compatible with PHPUnit 7-9, so we can use "phpunit/phpunit": "^7.0|^8.0|^9.0" to allow running tests on PHP 7.2.

[JaZo]

Thanks for your effort @holtkamp, released in 1.3.0!