MAC本来就自带了 php，但是很多扩展没有安装，所以选择了重新安装php并升级到最新版，下面说说安装步骤，希望对大家有所帮助。

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：

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

使用以下方法可以查看brew是否安装成功，以及目前的版本：

liondeMacBook-Pro:~ lion$ brew -v

Homebrew 0.9.5

添加brew的PHP扩展库：

liondeMacBook-Pro:~ lion$ brew update

liondeMacBook-Pro:~ lion$ brew tap homebrew/dupes

liondeMacBook-Pro:~ lion$ brew tap homebrew/php

liondeMacBook-Pro:~ lion$ brew tap josegonzalez/homebrew-php

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：

1. liondeMacBook-Pro:Library lion$ brew options php55
2. --disable-opcache
3. Build without Opcache extension
4. --disable-zend-multibyte
5. Disable auto-detection of Unicode encoded scripts (PHP 5.2 and 5.3 only)
6. --homebrew-apxs
7. Build against apxs in Homebrew prefix
8. --with-apache
9. Enable building of shared Apache 2.0 Handler module, overriding any options which disable apache
10. --with-cgi
11. Enable building of the CGI executable (implies --without-apache)
12. --with-debug
13. Compile with debugging symbols
14. --with-fpm
15. Enable building of the fpm SAPI executable (implies --without-apache)
16. --with-gmp
17. Build with gmp support
18. --with-homebrew-curl
19. Include Curl support via Homebrew
20. --with-homebrew-libxslt
21. Include LibXSLT support via Homebrew
22. --with-homebrew-openssl
23. Include OpenSSL support via Homebrew
24. --with-imap
25. Include IMAP extension
26. --with-intl
27. Include internationalization support
28. --with-libmysql
29. Include (old-style) libmysql support instead of mysqlnd
30. --with-mssql
31. Include MSSQL-DB support
32. --with-pdo-oci
33. Include Oracle databases (requries ORACLE_HOME be set)
34. --with-pgsql
35. Include PostgreSQL support
36. --with-phpdbg
37. Enable building of the phpdbg SAPI executable (PHP 5.4 and above)
38. --with-thread-safety
39. Build with thread safety
40. --with-tidy
41. Include Tidy support
42. --without-bz2
43. Build without bz2 support
44. --without-mysql
45. Remove MySQL/MariaDB support
46. --without-pcntl
47. Build without Process Control support
48. --without-pear
49. Build without PEAR
50. --HEAD
51. install HEAD version

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。

1. liondeMacBook-Pro:Library lion$ brew install php55 --with-mssql --with-homebrew-openssl --with-homebrew-libxslt --with-homebrew-curl --with-fpm --with-debug --with-gmp --with-imap --with-tidy --with-libmysql
2. ==> Installing dependencies for php55: curl, freetds, gmp
3. ==> Installing php55 dependency: curl
4. ==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/curl-7.37.1.mavericks.bottle.tar.gz
5. ######################################################################## 100.0%
6. ==> Pouring curl-7.37.1.mavericks.bottle.tar.gz
7. ==> Caveats
8. This formula is keg-only, which means it was not symlinked into /usr/local.
9. Mac OS X already provides this software and installing another version in
10. parallel can cause all kinds of trouble.
11. Generally there are no consequences of this for you. If you build your
12. own software and it requires this formula, you'll need to add to your
13. build variables:
14. LDFLAGS: -L/usr/local/opt/curl/lib
15. CPPFLAGS: -I/usr/local/opt/curl/include
16. ==> Summary
17. /usr/local/Cellar/curl/7.37.1: 285 files, 2.8M
18. ==> Installing php55 dependency: freetds
19. ==> Downloading http://mirrors.ibiblio.org/freetds/stable/freetds-0.91.tar.gz
20. ######################################################################## 100.0%
21. ==> ./configure --prefix=/usr/local/Cellar/freetds/0.91 --with-openssl=/usr/local/opt/openssl --with-tdsver=7.1 --mandir=/usr
22. ==> make
23. ==> make install
24. /usr/local/Cellar/freetds/0.91: 600 files, 9.9M, built in 2.2 minutes
25. ==> Installing php55 dependency: gmp
26. ==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/gmp-6.0.0a.mavericks.bottle.tar.gz
27. ######################################################################## 100.0%
28. ==> Pouring gmp-6.0.0a.mavericks.bottle.tar.gz
29. /usr/local/Cellar/gmp/6.0.0a: 15 files, 3.2M
30. ==> Installing php55
31. ==> Downloading http://www.php.net/get/php-5.5.15.tar.bz2/from/this/mirror
32. Already downloaded: /Library/Caches/Homebrew/php55-5.5.15
33. ==> ./configure --prefix=/usr/local/Cellar/php55/5.5.15 --localstatedir=/usr/local/var --sysconfdir=/usr/local/etc/php/5.5 --
34. ==> make
35. ==> make install
36. ==> /usr/local/Cellar/php55/5.5.15/bin/pear config-set php_ini /usr/local/etc/php/5.5/php.ini
37. ==> Caveats
38. The php.ini file can be found in:
39. /usr/local/etc/php/5.5/php.ini
40. ✩✩✩✩ PEAR ✩✩✩✩
41. If PEAR complains about permissions, 'fix' the default PEAR permissions and config:
42. chmod -R ug+w /usr/local/Cellar/php55/5.5.15/lib/php
43. pear config-set php_ini /usr/local/etc/php/5.5/php.ini
44. ✩✩✩✩ Extensions ✩✩✩✩
45. If you are having issues with custom extension compiling, ensure that
46. you are using the brew version, by placing /usr/local/bin before /usr/sbin in your PATH:
47. PATH="/usr/local/bin:$PATH"
48. PHP55 Extensions will always be compiled against this PHP. Please install them
49. using --without-homebrew-php to enable compiling against system PHP.
50. ✩✩✩✩ PHP CLI ✩✩✩✩
51. If you wish to swap the PHP you use on the command line, you should add the following to ~/.bashrc,
52. ~/.zshrc, ~/.profile or your shell's equivalent configuration file:
53. export PATH="$(brew --prefix homebrew/php/php55)/bin:$PATH"
54. ✩✩✩✩ FPM ✩✩✩✩
55. To launch php-fpm on startup:
56. * If this is your first install:
57. mkdir -p ~/Library/LaunchAgents
58. cp /usr/local/Cellar/php55/5.5.15/homebrew.mxcl.php55.plist ~/Library/LaunchAgents/
59. launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.php55.plist
60. * If this is an upgrade and you already have the homebrew.mxcl.php55.plist loaded:
61. launchctl unload -w ~/Library/LaunchAgents/homebrew.mxcl.php55.plist
62. cp /usr/local/Cellar/php55/5.5.15/homebrew.mxcl.php55.plist ~/Library/LaunchAgents/
63. launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.php55.plist
64. The control script is located at /usr/local/Cellar/php55/5.5.15/sbin/php55-fpm
65. Mountain Lion comes with php-fpm pre-installed, to ensure you are using the brew version you need to make sure /usr/local/sbin is before /usr/sbin in your PATH:
66. PATH="/usr/local/sbin:$PATH"
67. You may also need to edit the plist to use the correct "UserName".
68. Please note that the plist was called 'homebrew-php.josegonzalez.php55.plist' in old versions
69. of this formula.
70. To have launchd start php55 at login:
71. ln -sfv /usr/local/opt/php55/*.plist ~/Library/LaunchAgents
72. Then to load php55 now:
73. launchctl load ~/Library/LaunchAgents/homebrew.mxcl.php55.plist
74. ==> Summary
75. /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 <evp.h>这样的错误，请执行以下命令，将xcode进行更新：

xcode-select --install

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：

1. liondeMacBook-Pro:~ lion$ echo 'export PATH=/usr/local/bin:$PATH' >> ~/.bash_profile
2. liondeMacBook-Pro:~ lion$ echo 'export PATH=/usr/sbin:$PATH' >> ~/.bash_profile
3. liondeMacBook-Pro:~ lion$ echo 'export PATH=/usr/local/sbin:$PATH' >> ~/.bash_profile
4. liondeMacBook-Pro:~ lion$ source ~/.bash_profile
5. liondeMacBook-Pro:~ lion$ php -v
6. PHP 5.5.15 (cli) (built: Aug 14 2014 15:37:16) (DEBUG)
7. Copyright (c) 1997-2014 The PHP Group
8. Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
9. liondeMacBook-Pro:~ lion$

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。

1. liondeMacBook-Pro:~ lion$ brew search php55-
2. php55-amqp php55-igbinary php55-msgpack php55-runkit php55-varnish
3. php55-apcu php55-imagick php55-mysqlnd_ms php55-scrypt php55-vld
4. php55-augmentedtypes php55-inclued php55-oauth php55-snappy php55-wbxml
5. php55-binpack php55-intl php55-opcache php55-solr php55-xcache
6. php55-blitz php55-ioncubeloader php55-parsekit php55-sphinx php55-xdebug
7. php55-boxwood php55-jsmin php55-pcntl php55-spl-types php55-xhgui
8. php55-chdb php55-judy php55-pdflib php55-ssh2 php55-xhp
9. php55-couchbase php55-leveldb php55-pdo-dblib php55-stats php55-xhprof
10. php55-crypto php55-libevent php55-pdo-pgsql php55-stemmer php55-xmldiff
11. php55-dbase php55-libvirt php55-phalcon php55-sundown php55-yac
12. php55-dbus php55-lz4 php55-proctitle php55-svm php55-yaf
13. php55-dmtx php55-lzf php55-propro php55-swoole php55-yaml
14. php55-ev php55-mailparse php55-protobuf php55-thrift php55-yar
15. php55-gearman php55-mcrypt php55-pspell php55-tidy php55-yaz
16. php55-geoip php55-memcache php55-pthreads php55-timezonedb php55-yp
17. php55-gmagick php55-memcached php55-raphf php55-tokyotyrant php55-yrmcds
18. php55-graphdat php55-midgard2 php55-redis php55-twig php55-zmq
19. php55-htscanner php55-mongo php55-redland php55-uploadprogress php55-zookeeper
20. php55-http php55-mosquitto php55-riak php55-uuid

我安装的是以下php5.5几个扩展：

liondeMacBook-Pro:~ lion$ brew install php55-imagick php55-igbinary php55-ev php55-gmagick php55-geoip php55-memcache php55-memcached php55-thrift php55-xdebug php55-sphinx composer

接下来我们测试php-fpm的配置是否正确，以及是否正确启动：

1. #测试php-fpm配置是否正确
2. liondeMacBook-Pro:bin lion$ php-fpm -t
3. [14-Aug-2014 16:14:30] NOTICE: configuration file /usr/local/etc/php/5.5/php-fpm.conf test is successful
4. liondeMacBook-Pro:bin lion$ php-fpm -c /usr/local/etc/php/5.5/php.ini -y /usr/local/etc/php/5.5/php-fpm.conf -t
5. [14-Aug-2014 16:14:48] NOTICE: configuration file /usr/local/etc/php/5.5/php-fpm.conf test is successful
6. #启动php-fpm
7. liondeMacBook-Pro:bin lion$ launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.php55.plist
8. #查看9000端口是否在运行
9. liondeMacBook-Pro:bin lion$ lsof -i:9000
10. COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
11. php-fpm 51241 lion 8u IPv4 0xce9d0f6417637937 0t0 TCP localhost:cslistener (LISTEN)
12. php-fpm 51243 lion 0u IPv4 0xce9d0f6417637937 0t0 TCP localhost:cslistener (LISTEN)
13. php-fpm 51244 lion 0u IPv4 0xce9d0f6417637937 0t0 TCP localhost:cslistener (LISTEN)
14. php-fpm 51245 lion 0u IPv4 0xce9d0f6417637937 0t0 TCP localhost:cslistener (LISTEN)
15. #关闭掉php-fpm进程，再查看9000端口，没有监听了
16. liondeMacBook-Pro:bin lion$ ps aux|grep php-fpm|grep -v 'grep'|awk '{print $2}'|xargs kill -9
17. liondeMacBook-Pro:bin lion$ lsof -i:9000
18. 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）：

ln -sfv /usr/local/opt/php55/*.plist ~/Library/LaunchAgents

launchctl load ~/Library/LaunchAgents/homebrew.mxcl.php55.plist