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.

手册中的另一个解决方案:

Composer也尊重由componer_memory_limit环境变量定义的内存限制:

COMPOSER_MEMORY_LIMIT=-1 composer.phar <...>

或者在我的案例中

export COMPOSER_MEMORY_LIMIT=-1
composer <...>

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.

在确保供应商文件夹存在之前，请确保不需要包。

检查之前是否安装过composer。您可能只是将存储库克隆到您的机器上。因此，在需要新的包之前，必须先安装旧的包。或者，您可能希望在composer命令中包含这个选项——profile，以查看时间和内存使用信息。

我使用php7.2，大小默认设置为memory_limit = 512M。 要增加大小，需要定位php.ini。

在Wamp中，它位于C:\wamp64\bin\php\php7.2.23\php.ini。请注意PHP版本，因为它是名称文件夹，在我的情况下，我有php7.2.23

在Laragon中，它位于C:\ Laragon \bin\php\php-7.2.23- win32 - vc15 -x64\php.ini中。

如果您不想允许无限的空间，您可以设置任何您方便的大小，在我的例子中，我使用memory_limit = 2G

如果希望允许无限空间，可以更改为memory_limit = -1

同样的问题，没有任何与“memory_limit”相关的工作，但是..

composer self-update --2

．．解决了我的问题。(升级:1.10.17 -> 2.0.4)