brew Error: Formulae found in multiple taps

Mac PHP

brew install php56-apcu

Error: Formulae found in multiple taps: 
 * homebrew/php/php56-apcu
 * josegonzalez/php/php56-apcu

Please use the fully-qualified name e.g. homebrew/php/php56-apcu to refer the formula.

解决：
多个镜像地址，brew不知道该怎么办了！

brew untap homebrew/php