Brew 是 Mac 下面的包管理工具，通过 Github 托管适合 Mac 的编译配置以及 Patch，可以方便的安装开发工具。 Mac 自带ruby 所以安装起来很方便，同时它也会自动把git也给你装上。官方网站： http://brew.sh
安装方法：
使用以下方法可以查看brew是否安装成功，以及目前的版本：
可以使用brew options PHP55命令查看安装时可以有哪些选项，因为我之前安装过curl、libxslt、openssl所以，在选项中会提示是否使用brew安装的相关扩展：
开始安装PHP5.5.15，安装后的PHP-fpm.ini以及PHP.ini都在目录：/usr/local/etc/PHP/5.5/下面
Mac OS X already provides this software and installing another version in
parallel can cause all kinds of trouble.
Generally there are no consequences of this for you. If you build your
own software and it requires this formula,you'll need to add to your
build variables:
LDFLAGS: -L/usr/local/opt/curl/lib
CPPFLAGS: -I/usr/local/opt/curl/include
==> Summary
/usr/local/Cellar/curl/7.37.1: 285 files,2.8M
==> Installing PHP55 dependency: freetds
==> Downloading http://mirrors.ibiblio.org/freetds/stable/freetds-0.91.tar.gz
######################################################################## 100.0%
==> ./configure --prefix=/usr/local/Cellar/freetds/0.91 --with-openssl=/usr/local/opt/openssl --with-tdsver=7.1 --mandir=/usr
==> make
==> make install
/usr/local/Cellar/freetds/0.91: 600 files,9.9M,built in 2.2 minutes
==> Installing PHP55 dependency: gmp
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/gmp-6.0.0a.mavericks.bottle.tar.gz
######################################################################## 100.0%
==> Pouring gmp-6.0.0a.mavericks.bottle.tar.gz
/usr/local/Cellar/gmp/6.0.0a: 15 files,3.2M
==> Installing PHP55
==> Downloading http://www.PHP.net/get/PHP-5.5.15.tar.bz2/from/this/mirror
Already downloaded: /Library/Caches/Homebrew/PHP55-5.5.15
==> ./configure --prefix=/usr/local/Cellar/PHP55/5.5.15 --localstatedir=/usr/local/var --sysconfdir=/usr/local/etc/PHP/5.5 --
==> make
==> make install
==> /usr/local/Cellar/PHP55/5.5.15/bin/pear config-set PHP_ini /usr/local/etc/PHP/5.5/PHP.ini
==> Caveats
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/PHP55/5.5.15/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:$PATH"
✩✩✩✩ FPM ✩✩✩✩
To launch PHP-fpm on startup:
If this is your first install:
mkdir -p ~/Library/LaunchAgents
cp /usr/local/Cellar/PHP55/5.5.15/homebrew.mxcl.PHP55.plist ~/Library/LaunchAgents/
launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.PHP55.plist
If this is an upgrade and you already have the homebrew.mxcl.PHP55.plist loaded:
launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.PHP55.plist
cp /usr/local/Cellar/PHP55/5.5.15/homebrew.mxcl.PHP55.plist ~/Library/LaunchAgents/
launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.PHP55.plist
The control script is located at /usr/local/Cellar/PHP55/5.5.15/sbin/PHP55-fpm
Mountain Lion comes with PHP-fpm pre-installed,to ensure you are using the brew version you need to make sure /usr/local/sbin is before /usr/sbin in your PATH:
PATH="/usr/local/sbin:$PATH"
You may also need to edit the plist to use the correct "UserName".
Please note that the plist was called 'homebrew-PHP.josegonzalez.PHP55.plist' in old versions
of this formula.
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
==> Summary
/usr/local/Cellar/PHP55/5.5.15: 477 files,43M,built in 3.9 minutes
过程中如果出现configure: error: Cannot find OpenSSL's
在PHP5安装完成的提示中写到，如何进行PHP5和mac自带的PHP以及PHP-fpm替换，执行以下命令后，我们可以看到当前的PHP版本已经是最新的了：
使用brew search PHP55-命令，可以查看还有哪些扩展可以安装，然后执行brew install PHP55-XXX就可以了。
我安装的是以下PHP5.5几个扩展：
接下来我们测试PHP-fpm的配置是否正确，以及是否正确启动：
liondeMacBook-Pro:bin lion$ launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.PHP55.plist
liondeMacBook-Pro:bin lion$ lsof -i:9000
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
PHP-fpm 51241 lion 8u IPv4 0xce9d0f6417637937 0t0 TCP localhost:cslistener (LISTEN)
PHP-fpm 51243 lion 0u IPv4 0xce9d0f6417637937 0t0 TCP localhost:cslistener (LISTEN)
PHP-fpm 51244 lion 0u IPv4 0xce9d0f6417637937 0t0 TCP localhost:cslistener (LISTEN)
PHP-fpm 51245 lion 0u IPv4 0xce9d0f6417637937 0t0 TCP localhost:cslistener (LISTEN)
liondeMacBook-Pro:bin lion$ ps aux|grep PHP-fpm|grep -v 'grep'|awk '{print $2}'|xargs kill -9
liondeMacBook-Pro:bin lion$ lsof -i:9000
liondeMacBook-Pro:bin lion$
设置PHP-FPM开机运行（其实在安装完成的提示中，也有说明）：
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