Resolve Xdebug conflicts in Composer runtime
composer is good news for phper, but sometimes, it also gives us some little troubles, such as the following error:
You are running composer with xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug
This is a very common conflict, and the impact of this conflict on composer operation is still quite severe Big, when we enable the Xdebug function, it will slow down our composer by 3-4 times. In other words: xdebug is very important for our program debugging, but it increases memory usage and process time for composer.
Composer official website provides a solution
Now I will talk about my troubleshooting ideas.
Method 1: Disable Xdebug globally through the php configuration file.
First of all, this is definitely a conflict caused by enabling Xdebug. We need to find where Xdebug is enabled.
Write a page containing the phpinfo() function and open it in the browser.
Configuration Parameters | Value |
Configuration File (php.ini) Path | /usr/local/etc/php/5.6 |
Loaded Configuration File | /usr/ local/etc/php/5.6/php.ini |
Scan this dir for additional .ini files | /usr/local/etc/php/5.6/conf.d |
Additional .ini files parsed | /usr/local/etc/php/5.6/conf.d/ext-igbinary.ini, /usr/local/etc/php/5.6/conf.d/ext-mcrypt.ini, /usr/local/etc/php /5.6/conf.d/ext-redis.ini, /usr/local/etc/php/5.6/conf.d/ext-xdebug.ini |
可见 php 调用了 php.ini 配置文件和 conf.d 目录里面的所有 ini 配置文件。
禁用 php.ini 中的 "xdebug" 模块
用分号注释掉调用语句:
;zend_extension = "/path/to/my/xdebug.so"
去除 Xdebug 相关的配置文件
如果 Xdebug 的调用不在主配置文件 php.ini 中,那么有可能在扩展配置文件夹中,比如我的环境就是如此,见上图表:
我们可以将 conf.d/ext-xdebug.ini 重命名为 ext-xdebug.bak 或者删除。这样 php 服务重启就不会调用了。当面,我们也可以参照上面的步骤,在 conf.d/ext-xdebug.ini 中将相应的 Xdebug 语句注释掉,效果相同。
方法2:通过给 composer 设置别名防止调用 Xdebug
设置别名的需要了解你自己在哪个 shell 环境下,我的机子用的是 zsh ,所以编辑 .zshrc 这个文件即可。
➜ ~ cd ➜ ~ vi .zshrc
然后根据下面两种情况选择一种方式设置你的别名,或者设置 两个别名 。
调用不含 Xdebug 模块的配置文件
对于 Xdebug 调用在 php.ini 中的情况,我们可以通过复制一份不含 Xdebug 的配置文件(xdebug-disabled-php.ini),然后建立以下别名:
alias comp='php -c /path/to/xdebug-disabled-php.ini /path/to/composer.phar'
不调用任何 php 配置文件
这种方式可以解决像我一样已经将一些扩展配置路径编译进 php 的情况:
/path/to 为你实际的文件或命令路径
OK ,现在我们执行 composer -V 试试,是否还有错误提示出现。
Good,完美解决。
以上就是解决 Composer 运行时的 Xdebug 冲突的内容,更多相关内容请关注PHP中文网(www.php.cn)!

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