1.先进入php安装的bin目录

cd /usr/local/php/bin/

2. 下载php安装pecl的脚本

wget http://pear.php.net/go-pear.phar -O go-pear.php

3.安装pecl

php go-pear.php

这时候会提示是否安装到这些目录下

 1. Installation base ($prefix)                   : /usr/local/php
 2. Temporary directory for processing            : /tmp/pear/install
 3. Temporary directory for downloads             : /tmp/pear/install
 4. Binaries directory                            : /usr/local/php/bin
 5. PHP code directory ($php_dir)                 : /usr/local/php/share/pear
 6. Documentation directory                       : /usr/local/php/docs
 7. Data directory                                : /usr/local/php/data
 8. User-modifiable configuration files directory : /usr/local/php/cfg
 9. Public Web Files directory                    : /usr/local/php/www
10. System manual pages directory                 : /usr/local/php/man
11. Tests directory                               : /usr/local/php/tests
12. Name of configuration file                    : /usr/local/php/etc/pear.conf

翻译版

 1.php安装的目录                              : /usr/local/php
 2.用于处理的临时目录                           : /tmp/pear/install
 3. 下载的临时目录                              : /tmp/pear/install
 4. 二进制文件目录(就是pecl的安装目录)            : /usr/local/php/bin
 5. PHP代码目录（$PHP_dir）                    : /usr/local/php/share/pear
 6.文档目录                                    : /usr/local/php/docs
 7.数据目录                                    :  /usr/local/php/Data
 8.用户可修改的配置文件目录                       : /usr/local/php/cfg
 9.公共Web文件目录                              :  /usr/local/php/www
 10.系统手册页目录                              :  /usr/local/php/man
 11.测试目录                                   :  /usr/local/php/Tests
 12.配置文件名                                 : /usr/local/php/etc/pear.conf

4. pecl基本命令

pecl search key-word    #查找扩展
pecl install key-word   #安装扩展