PHP Fatal error: Call to undefined function dom_import_simplexml()

PHP Fatal error:  Call to undefined function dom_import_simplexml() in /usr/share/pear/XML/RPC2/Backend/Php/Value.php on line 230

というエラーが出て、dom_import_simplexml()関数が使えなかった。

解決策:php-domのインストール

-bash-4.1# yum install php-dom
]Loaded plugins: fastestmirror, priorities, security
Loading mirror speeds from cached hostfile
 * epel: ftp.kddilabs.jp
 * rpmforge: mirror.fairway.ne.jp
 * rpmforge-extras: mirror.fairway.ne.jp
1771 packages excluded due to repository priority protections
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php-xml.x86_64 0:5.3.3-14.el6_3 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=====================================================================================================================================================================================
 Package                                   Arch                                     Version                                          Repository                                 Size
=====================================================================================================================================================================================
Installing:
 php-xml                                   x86_64                                   5.3.3-14.el6_3                                   updates                                   101 k

Transaction Summary
=====================================================================================================================================================================================
Install       1 Package(s)

Total download size: 101 k
Installed size: 307 k
Is this ok [y/N]: y
Is this ok [y/N]: y
Downloading Packages:
php-xml-5.3.3-14.el6_3.x86_64.rpm                                                                                                                             | 101 kB     00:01    
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : php-xml-5.3.3-14.el6_3.x86_64                                                                                                                                     1/1
  Verifying  : php-xml-5.3.3-14.el6_3.x86_64                                                                                                                                     1/1

Installed:
  php-xml.x86_64 0:5.3.3-14.el6_3                                                                                                                                                   

Complete!
-bash-4.1# service httpd restart