brew install php70 --with-debug --with-gmp --with-homebrew-curl --with-homebrew-libressl --with-homebrew-libxml2 --with-homebrew-libxslt --with-imap --with-libmysql --with-mysql
出错信息：
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configure: error: Cannot find libz If reporting this issue please do so at (not Homebrew/brew or Homebrew/core): https://github.com/josegonzalez/homebrew-php/issues /usr/local/Homebrew/Library/Homebrew/utils/github.rb:226:in `raise_api_error': Validation Failed (GitHub::Error) from /usr/local/Homebrew/Library/Homebrew/utils/github.rb:184:in `open' from /usr/local/Homebrew/Library/Homebrew/utils/github.rb:233:in `issues_matching' from /usr/local/Homebrew/Library/Homebrew/utils/github.rb:266:in `issues_for_formula' from /usr/local/Homebrew/Library/Homebrew/exceptions.rb:325:in `fetch_issues' from /usr/local/Homebrew/Library/Homebrew/exceptions.rb:321:in `issues' from /usr/local/Homebrew/Library/Homebrew/exceptions.rb:383:in `dump' from /usr/local/Homebrew/Library/Homebrew/brew.rb:133:in `rescue in' from /usr/local/Homebrew/Library/Homebrew/brew.rb:31:in ` '
解决方法：
在命令行执行 $ xcode-select --install 再次安装 $ brew install php70 --with-debug --with-gmp --with-homebrew-curl --with-homebrew-libressl --with-homebrew-libxml2 --with-homebrew-libxslt --with-imap --with-libmysql --with-mysql 成功解决。
参考链接：
http://stackoverflow.com/questions/39442552/5-boxen-errors-when-running-boxen-our-boxen