只需设置memory_limit，指定编写器的完整路由。Phar文件和更新，在我的情况下使用命令:

php -d memory_limit=-1 C:/wamp64/composer.phar update

最近发现，Composer在具有大量历史标记的包上消耗了大量CPU +内存。看到作曲家/作曲家# 7577

这个问题的解决方法是使用symfony/flex或https://github.com/rubenrua/symfony-clean-tags-composer-plugin

composer global require rubenrua/symfony-clean-tags-composer-plugin

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.

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!

您可以在运行Composer时使用特定的php版本

如果像我一样，由于某种原因，尽管您的计算机是64位的，但您使用的是32位的PHP，这将总是限制分配给Composer的内存数量。我是这样解决问题的:

在你的电脑上安装一个64位的php版本(比如在C:/php64中) 在composer中(在我的例子中使用cygwin)运行:

C:/php64/php.exe ../作曲家。phar更新

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)