PHP 8 升級後如何修復 Laravel 應用程式故障？

Laravel App Malfunctions Post-PHP 8 Upgrade

After updating to PHP 8, Laravel applications may experience disruptions. This issue manifests with the following error messages:

Deprecated: Method ReflectionParameter::getClass() is deprecated in /Users/.../Sites/.../vendor/laravel/framework/src/Illuminate/Container/Container.php on line 871

Deprecated: Method ReflectionParameter::getClass() is deprecated in /Users/.../Sites/.../vendor/laravel/framework/src/Illuminate/Container/Container.php on line 945

Despite troubleshooting attempts, the problem persists.

Solution

To resolve this issue, adhere to the following steps:

1. Update Composer.json: Include PHP 8 support:

"php": "^7.4|^8.0",

2. Run Composer Update: Update Laravel to the latest version:

composer update

3. Upgrade Libraries: Ensure the following libraries are updated:

• PHP to ^8.0
• Faker to fakerphp/faker:^1.9.1
• PHPUnit to phpunit/phpunit:^9.3

4. Check for Additional Updates: Verify and update any other required libraries.

Explanation

PHP 8 introduces enhancements to its type systems, causing certain Reflection API methods to produce inaccurate results. To address this, the following methods in ReflectionParameter are deprecated:

• ReflectionParameter::getClass()
• ReflectionParameter::isArray()
• ReflectionParameter::isCallable()

ReflectionParameter::getType() is the preferred method in these cases.

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