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

Centos 7使用:

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

窗户呢?

我用的是Windows 10，这个命令对我来说很管用，

php -d memory_limit=-1 "C:\ProgramData\ComposerSetup\bin\composer.phar" update

在我的例子中，我丢失了一个交换分区。更多信息:https://github.com/composer/composer/issues/7348#issuecomment-414178276

苹果笔记本电脑: 执行命令sudo nano ~/。bash_profile编辑bash_profile，然后在该文件中添加别名composer="COMPOSER_MEMORY_LIMIT=-1 composer"，然后保存并退出。

希望这样能解决问题;编码快乐!

Here is another way to solve this problem under windows, if you use Wampserver. Indeed at the level of wampserver, there are two php.ini files, that of PHP, which one can find in the location C: \ wamp64 \ bin \ php \ phpx.xx \ php.ini and that of Apache , which can be found at location C: \ wamp64 \ bin \ apache \ apachex.xx \ bin \ php.ini. Both of these files have the memory_limit parameter. So to be sure to solve this problem, it is better to set the memory_limit = -1 parameter in both files at once.