PHP 8 Upgrade Error: How to Fix \'Your PHP version does not satisfy requirements\'?

Composer Error after PHP Upgrade: "Your PHP version does not satisfy requirements"

When upgrading from PHP 7.4 to 8.0 and running composer update, you may encounter an error stating "Your PHP version (8.0.3) does not satisfy requirement."

Explanation:

This means that you have a dependency in your project that requires a specific PHP version, and your current PHP version does not meet that requirement. In this case, the dependency requires PHP 5.6.4 or 7.0, but you are using PHP 8.0.3.

Solution:

There are two ways to resolve this issue:

1. Update the Dependency:

Check if there is a newer version of the dependency that supports PHP 8.0. If so, update the dependency in your composer.json file and run composer update again.

2. Ignore Platform Requirements:

If updating the dependency is not an option, you can instruct Composer to ignore the platform requirements for PHP by using the --ignore-platform-req=php or --ignore-platform-reqs option. This will force Composer to install the dependency despite the compatibility issue.

However, it is important to note that using this option may lead to unexpected behavior or security vulnerabilities if the dependency is not fully compatible with PHP 8.0. It is recommended to update the dependency or use an alternative dependency that supports PHP 8.0 if possible.

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