执行
brew install php55

的时候有这这一堆：
warning: backing up all known pear.conf and .pearrc fileswarning: if you have a pre-existing pear install outside of homebrew-php, or you are using a non-standard pear.conf location, installation may fail.

然后：
./configure --prefix=/usr/local/cellar/php55/5.5.21 -- localstatedir=/usr/locachecking for krb5-config... /usr/bin/krb5-configchecking for dsa_get_default_method in -lssl... nochecking for x509_free in -lcrypto... yeschecking for pkg-config... noconfigure: error: cannot find openssl's read this: http://git.io/brew-troubleshootingif reporting this issue please do so at (not homebrew/homebrew): https://github.com/josegonzalez/homebrew-php/issues

求助
php -vphp 5.5.14 (cli) (built: sep 9 2014 19:09:25)copyright (c) 1997-2014 the php groupzend engine v2.5.0, copyright (c) 1998-2014 zend technologies

显示的是我之前安装的版本和安装时间。那么另一个问题就来了，如何完全清理brew 安装的php？
回复内容： 执行
brew install php55

的时候有这这一堆：
warning: backing up all known pear.conf and .pearrc fileswarning: if you have a pre-existing pear install outside of homebrew-php, or you are using a non-standard pear.conf location, installation may fail.

然后：
./configure --prefix=/usr/local/cellar/php55/5.5.21 -- localstatedir=/usr/locachecking for krb5-config... /usr/bin/krb5-configchecking for dsa_get_default_method in -lssl... nochecking for x509_free in -lcrypto... yeschecking for pkg-config... noconfigure: error: cannot find openssl's read this: http://git.io/brew-troubleshootingif reporting this issue please do so at (not homebrew/homebrew): https://github.com/josegonzalez/homebrew-php/issues

求助
php -vphp 5.5.14 (cli) (built: sep 9 2014 19:09:25)copyright (c) 1997-2014 the php groupzend engine v2.5.0, copyright (c) 1998-2014 zend technologies

显示的是我之前安装的版本和安装时间。那么另一个问题就来了，如何完全清理brew 安装的php？
brew cleanup php