composer和laravel 7不适用于php8.1

Question

今天我将examplep中的php更新为8.1.0，之后所有Laravel项目都停止在localhost中。

因此，在将composer.json从更新为之后

"php": "^7.3|^8.0",

在运行composer更新或任何composer命令后，我看到composer出现了这样的问题：

PHP Deprecated:  Return type of SymfonyComponentConsoleHelperHelperSet::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/symfony/console/Helper/HelperSet.php on line 112
Deprecated: Return type of SymfonyComponentConsoleHelperHelperSet::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/symfony/console/Helper/HelperSet.php on line 112
Deprecation Notice: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/Constraint.php:48
Deprecation Notice: Return type of ComposerRepositoryArrayRepository::count() should either be compatible with Countable::count(): int, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Repository/ArrayRepository.php:277
Deprecation Notice: Return type of ComposerRepositoryArrayRepository::count() should either be compatible with Countable::count(): int, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Repository/ArrayRepository.php:277
Deprecation Notice: Return type of ComposerRepositoryArrayRepository::count() should either be compatible with Countable::count(): int, or the #[ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Repository/ArrayRepository.php:277
Deprecation Notice: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/Constraint.php:48
Deprecation Notice: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/Constraint.php:48
Deprecation Notice: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/Constraint.php:48

我该如何解决这个问题？我所有的项目都因为作曲家出错而停止。

Answer 1

我在最新的examplep中遇到了同样的问题，我所做的只是回到7.4.26，现在6-7的安装工作正常。