作曲家和 laravel 7 不适用于 php 8.1 [关闭]

Posted 2023-03-14

【中文标题】作曲家和 laravel 7 不适用于 php 8.1 [关闭]

【英文标题】：composer and laravel 7 not working with php 8.1 [closed]

【发布时间】：2022-01-22 07:38:55

【问题描述】：

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

所以，在将 composer.json 从更新到

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

在运行 composer update 或任何 composer 命令后，我看到 composer 有这样的问题：

PHP Deprecated:  Return type of Symfony\Component\Console\Helper\HelperSet::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 Symfony\Component\Console\Helper\HelperSet::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 ($string) of type string is deprecated in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/vendor/justinrainbow/json-schema/src/JsonSchema/Constraints/Constraint.php:48
Deprecation Notice: Return type of Composer\Repository\ArrayRepository::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Repository/ArrayRepository.php:277
Deprecation Notice: Return type of Composer\Repository\ArrayRepository::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Repository/ArrayRepository.php:277
Deprecation Notice: Return type of Composer\Repository\ArrayRepository::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar://C:/ProgramData/ComposerSetup/bin/composer.phar/src/Composer/Repository/ArrayRepository.php:277
Deprecation Notice: strlen(): Passing null to parameter #1 ($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，因为作曲家有错误，我的所有项目都停止了。

【问题讨论】：

为什么会这样？ Laravel 7 不支持 PHP 8，并且是在它之前编写的。

你在哪里看到 Laravel 7 兼容 PHP 8.1？

好吧，如果你想使用 PHP 8，你需要使用兼容的 Laravel 版本。

@BrianThompson Laravel 7（和 6）仍受支持。规范 ^7.3|^8.0 表示它适用于 8.1。

你需要更新作曲家；错误消息显然来自composer.phar。就做composer selfupdate

【参考方案1】：

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

【讨论】：

这只是一种解决方法。有什么解决办法吗？