docker内php使用xdebug性能分析

官方文档 Xdebug: Documentation » Profiling

docker内构建php8+nginx 可参考 docker构建nginx+php8_fangdong88的博客-CSDN博客_docker nginx php 

docker 安装 xdebug

pecl install xdebug
docker-php-ext-enable xdebug

php --ini 查看php配置路径

修改 docker-php-ext-xdebug.ini 配置文件, 如果无法使用vi命令，安装vim

docker内安装vim

apt-get update
apt-get install vim

编辑 docker-php-ext-xdebug.ini

zend_extension=xdebug
xdebug.mode=profile
xdebug.start_with_request=XDEBUG_TRIGGER // 可选，如果不配置这个所有访问都会生成分析文件，启用的话可通过url参数的形式来触发分析，例如 http://localhost/inde.php?XDEBUG_TRIGGER
xdebug.output_dir=/www   // 替换为你docker内与本地目录映射的地址
xdebug.use_compression=false

重启 docker php

安装xdebug脚本分析软件

brew install qcachegrind
启动命令 qcachegrind

调用api，会在上面设置的 xdebug.output_dir 目录里生成xdebug分析文件，在qcachegrind里打开即可看到分析内容

我本地是php7.2的，之前通过brew install php@7.2 安装的

上面执行完后php无法正常运行了，提示

dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.68.dylib
  Referenced from: /usr/local/opt/php@7.2/bin/php
  Reason: image not found
[7]    63371 abort      php -m

我猜是安装qcachegrind导致的，解决办法，只有重装php

brew upgrade php@7.2
==> Upgrading 1 outdated package:
php@7.2 7.2.34_2 -> 7.2.34_4
Error: php@7.2 has been disabled because it is deprecated upstream!

因为我不想换版本，本来想直接通过升级来解决，但是官方brew又不支持php7.2了，只有想其他办法来重装.

先卸载原来的php

brew services stop php@7.2
brew uninstall php@7.2

重装php7.2

brew tap shivammathur/php
brew install shivammathur/php/php@7.2

安装成功提示

The php.ini and php-fpm.ini file can be found in:
    /usr/local/etc/php/7.2/
​
php@7.2 is keg-only, which means it was not symlinked into /usr/local,
because this is an alternate version of another formula.
​
If you need to have php@7.2 first in your PATH, run:
  echo 'export PATH="/usr/local/opt/php@7.2/bin:$PATH"' >> ~/.zshrc
  echo 'export PATH="/usr/local/opt/php@7.2/sbin:$PATH"' >> ~/.zshrc
​
For compilers to find php@7.2 you may need to set:
  export LDFLAGS="-L/usr/local/opt/php@7.2/lib"
  export CPPFLAGS="-I/usr/local/opt/php@7.2/include"
​
​
To restart shivammathur/php/php@7.2 after an upgrade:
  brew services restart shivammathur/php/php@7.2
Or, if you don't want/need a background service you can just run:
  /usr/local/opt/php@7.2/sbin/php-fpm --nodaemonize

然后根据上面提示，启动php7.2

brew services start shivammathur/php/php@7.2

惊奇的发现之前安装的php扩展都还在，什么都不用改，很nice.