用brew安装PHP扩展时报错nvalid attribute for formula 'homebrew/php/php71？

Question

在我重新安装了PHP71后
报错内容如下：
包括安装reids,mongodb扩展也是，任何扩展也装不上。

huangwhMac:php huangwh$ brew install php71-igbinary
Updating Homebrew...
==> Installing php71-igbinary from homebrew/php
Error: invalid attribute for formula 'homebrew/php/php71': version (nil)
/usr/local/Homebrew/Library/Homebrew/formula.rb:252:in `validate_attributes!'
/usr/local/Homebrew/Library/Homebrew/formula.rb:199:in `initialize'
/usr/local/Homebrew/Library/Homebrew/formulary.rb:88:in `new'
/usr/local/Homebrew/Library/Homebrew/formulary.rb:88:in `get_formula'
/usr/local/Homebrew/Library/Homebrew/formulary.rb:275:in `factory'
/usr/local/Homebrew/Library/Homebrew/dependency.rb:33:in `to_formula'
/usr/local/Homebrew/Library/Homebrew/dependency.rb:96:in `block in expand'
/usr/local/Homebrew/Library/Homebrew/dependency.rb:83:in `expand'
/usr/local/Homebrew/Library/Homebrew/formula.rb:1473:in `recursive_dependencies'
/usr/local/Homebrew/Library/Homebrew/formula.rb:1485:in `runtime_dependencies'
/usr/local/Homebrew/Library/Homebrew/formula_installer.rb:416:in `runtime_requirements'
/usr/local/Homebrew/Library/Homebrew/formula_installer.rb:429:in `expand_requirements'
/usr/local/Homebrew/Library/Homebrew/formula_installer.rb:364:in `compute_dependencies'
/usr/local/Homebrew/Library/Homebrew/formula_installer.rb:136:in `verify_deps_exist'
/usr/local/Homebrew/Library/Homebrew/formula_installer.rb:129:in `prelude'
/usr/local/Homebrew/Library/Homebrew/cmd/install.rb:335:in `install_formula'
/usr/local/Homebrew/Library/Homebrew/cmd/install.rb:226:in `block in install'
/usr/local/Homebrew/Library/Homebrew/cmd/install.rb:224:in `each'
/usr/local/Homebrew/Library/Homebrew/cmd/install.rb:224:in `install'
/usr/local/Homebrew/Library/Homebrew/brew.rb:95:in `<main>'

Answer 1

1.首先你要确定你已经 brew update 了。
2.其次你可以在命令行运行 brew install php71-igbinary --build-from-source
3.可以在 --build-from-source 后面追加 --HEAD 或者 --devel
4.可能是你的Homebrew 版本过低，尝试重装：ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
如果仍然不行的话，可以@我