安装了php发觉没有编译pear管理包的，只能动手安装了。
1.下载pear包：
wget http://pear.php.net/go-pear.phar
可能这个不是最新的，那就要根据提示下载更新的了。
2.执行：php go-pear.phar
打出如下提示
Below is a suggested file layout for your new PEAR installation. To
change individual locations, type the number in front of the
directory. Type 'all' to change all of them or simply press Enter to
accept these locations.
1. Installation base ($prefix) : /usr
2. Temporary directory for processing : /tmp/pear/install
3. Temporary directory for downloads : /tmp/pear/install
4. Binaries directory : /usr/bin
5. PHP code directory ($php_dir) : /usr/share/pear
6. Documentation directory : /usr/docs
7. Data directory : /usr/data
8. User-modifiable configuration files directory : /usr/cfg
9. Public Web Files directory : /usr/www
10. Tests directory : /usr/tests
11. Name of configuration file : /etc/pear.conf
1-11, 'all' or Enter to continue:
如果不用修改各个路径，按下enter就可了。
如果要修改可以写上编码，如：1后按enter（修改的是安装目录）
1-11, 'all' or Enter to continue: 1
再输入目录即可。
(Use $prefix as a shortcut for '/usr', etc.)
Installation base ($prefix) [/usr] : /usr/local/pear
3.测试
只要PATH路径包含4路径就可以直接运行pear，执行pear：
Commands:
build Build an Extension From C Source
bundle Unpacks a Pecl Package
channel-add Add a Channel
channel-alias Specify an alias to a channel name
channel-delete Remove a Channel From the List
channel-discover Initialize a Channel from its server
channel-info Retrieve Information on a Channel
channel-login Connects and authenticates to remote channel server
channel-logout Logs out from the remote channel server
channel-update Update an Existing Channel
clear-cache Clear Web Services Cache
config-create Create a Default configuration file
config-get Show One Setting
config-help Show Information About Setting
config-set Change Setting
config-show Show All Settings
convert Convert a package.xml 1.0 to package.xml 2.0 format
cvsdiff Run a "cvs diff" for all files in a package
cvstag Set CVS Release Tag
download Download Package
download-all Downloads each available package from the default channel
info Display information about a package
install Install Package
list List Installed Packages In The Default Channel
list-all List All Packages
list-channels List Available Channels
list-files List Files In Installed Package
list-upgrades List Available Upgrades
login Connects and authenticates to remote server [Deprecated in favor of channel-login]
logout Logs out from the remote server [Deprecated in favor of channel-logout]
makerpm Builds an RPM spec file from a PEAR package
package Build Package
package-dependencies Show package dependencies
package-validate Validate Package Consistency
pickle Build PECL Package
remote-info Information About Remote Packages
remote-list List Remote Packages
run-scripts Run Post-Install Scripts bundled with a package
run-tests Run Regression Tests
search Search remote package database
shell-test Shell Script Test
sign Sign a package distribution file
svntag Set SVN Release Tag
uninstall Un-install Package
update-channels Update the Channel List
upgrade Upgrade Package
upgrade-all Upgrade All Packages [Deprecated in favor of calling upgrade with no parameters]
Usage: pear [options] command [command-options] <parameters>
Type "pear help options" to list all options.
Type "pear help shortcuts" to list all command shortcuts.
Type "pear help <command>" to get the help for the specified command.
这样证明已经安装好了。