这两天php cli老报错，修改php.ini无数回也不正常，一怒之下，卸载php54并安装了php55。

但在使用pecl安装redis等扩展的时候，总会报以下错误。

Fatal error: Call to a member function getFilelist() on a non-object in /usr/local/Cellar/php55/5.5.14/lib/php/PEAR/Command/Install.php on line 742

解决方法如下。
`brew info php55`

查看中间一段提示信息

To enable PHP in Apache add the following to httpd.conf and restart Apache:
LoadModule php5_module /usr/local/opt/php55/libexec/apache2/libphp5.so

The php.ini file can be found in:
/usr/local/etc/php/5.5/php.ini

✩✩✩✩ PEAR ✩✩✩✩

If PEAR complains about permissions, ‘fix’ the default PEAR permissions and config:
chmod -R ug+w /usr/local/Cellar/php55/5.5.14/lib/php
pear config-set php_ini /usr/local/etc/php/5.5/php.ini

✩✩✩✩ Extensions ✩✩✩✩

If you are having issues with custom extension compiling, ensure that
you are using the brew version, by placing /usr/local/bin before /usr/sbin in your PATH:

PATH=”/usr/local/bin:$PATH”

PHP55 Extensions will always be compiled against this PHP. Please install them
using –without-homebrew-php to enable compiling against system PHP.

✩✩✩✩ PHP CLI ✩✩✩✩

If you wish to swap the PHP you use on the command line, you should add the following to ~/.bashrc,
~/.zshrc, ~/.profile or your shell’s equivalent configuration file:

export PATH=”$(brew –prefix homebrew/php/php55)/bin:$PATH”

To have launchd start php55 at login:
ln -sfv /usr/local/opt/php55/*.plist ~/Library/LaunchAgents
Then to load php55 now:
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.php55.plist

然后执行其中提示的信息：
chmod -R ug+w /usr/local/Cellar/php55/5.5.14/lib/php
pear config-set php_ini /usr/local/etc/php/5.5/php.ini

问题解决。

然后就可以开心的跟RethinkDB玩耍了。