Fatal error: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 4096 bytes) in phar:///usr/local/bin/composer/src/Composer/DependencyResolver/RuleWatchGraph.php on line 52 Check https://getcomposer.org/doc/articles/troubleshooting.md#memory-limit-errors for more info on how to handle out of memory errors.

Set memory_limit to -1 works for me;) (vim /etc/php/7.2/cli/php.ini)

Centos 7使用:

COMPOSER_MEMORY_LIMIT=-1 composer require hwi/oauth-bundle php-http/guzzle6-adapter php-http/httplug-bundle

由于之前的答案都不包括set，所以我花了一点时间来弄清楚如何在Windows中做到这一点而不改变php.ini，但下面是对我有效的方法:

set COMPOSER_MEMORY_LIMIT=-1
composer require hwi/oauth-bundle php-http/guzzle6-adapter php-http/httplug-bundle

对于macOS Catalina和macOS Big Sur中的此错误，请使用以下代码行:

PHP -d memory_limit=-1 /usr/local/bin/composer update——no-plugins

我用这句话来更新Symfony 5。这个命令也适用于laravel 7。

在我的例子中:

Windows 10和Docker Desktop工作:

docker-compose -f .docker/docker-compose.yml exec php env COMPOSER_MEMORY_LIMIT=-1 composer require fideloper/proxy

Windows 10;

后藤C: \ ProgramData ComposerSetup \ bin

编辑:composer.bat并在最后一行添加memory_limit=-1，如下所示。

@echo OFF
:: in case DelayedExpansion is on and a path contains ! 
setlocal DISABLEDELAYEDEXPANSION
php -d memory_limit=-1 "%~dp0composer.phar" %*

问题解决了;)