How can PHP version compatibility issues be resolved when installing packages like guzzle?

To resolve PHP version compatibility issues when installing packages like Guzzle, you can specify the required PHP version in your composer.json file. This will ensure that Composer only installs packages that are compatible with your PHP version. ```json { "require": { "guzzlehttp/guzzle": "^6.3", "php": ">=7.2" } } ```