talk is cheap，show me the code:
[root@LAMP1 lib]# php -v PHP 5.3.3 (cli) (built: Oct 30 2014 20:12:53) Copyright (c) 1997-2010 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies [root@LAMP1 lib]# yum install php-bcmath Loaded plugins: fastestmirror, presto Loading mirror speeds from cached hostfile * base: mirrors.pubyun.com * extras: mirrors.pubyun.com * updates: mirrors.pubyun.com Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package php-bcmath.x86_64 0:5.3.3-40.el6_6 will be installed --> Finished Dependency Resolution Dependencies Resolved ============================================================================================================================================================================================== Package Arch Version Repository Size ============================================================================================================================================================================================== Installing: php-bcmath x86_64 5.3.3-40.el6_6 updates 37 k Transaction Summary ============================================================================================================================================================================================== Install 1 Package(s) Total download size: 37 k Installed size: 29 k Is this ok [y/N]: y Downloading Packages: Setting up and reading Presto delta metadata Processing delta metadata Package(s) data still to download: 37 k php-bcmath-5.3.3-40.el6_6.x86_64.rpm | 37 kB 00:00 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : php-bcmath-5.3.3-40.el6_6.x86_64 1/1 Verifying : php-bcmath-5.3.3-40.el6_6.x86_64 1/1 Installed: php-bcmath.x86_64 0:5.3.3-40.el6_6 Complete! [root@LAMP1 lib]# ps -ef|grep httpd root 1780 1 0 Mar10 ? 00:03:02 /usr/sbin/httpd apache 2510 1780 0 11:53 ? 00:00:00 /usr/sbin/httpd apache 2511 1780 0 11:53 ? 00:00:00 /usr/sbin/httpd apache 2512 1780 0 11:53 ? 00:00:00 /usr/sbin/httpd apache 2513 1780 0 11:53 ? 00:00:00 /usr/sbin/httpd apache 2514 1780 0 11:53 ? 00:00:00 /usr/sbin/httpd apache 2515 1780 0 11:53 ? 00:00:00 /usr/sbin/httpd apache 2516 1780 0 11:53 ? 00:00:00 /usr/sbin/httpd apache 2517 1780 0 11:53 ? 00:00:00 /usr/sbin/httpd root 2531 2474 0 11:56 pts/0 00:00:00 grep httpd [root@LAMP1 lib]# /usr/sbin/httpd -k restart [root@LAMP1 lib]#
如果想卸载也是一样的：
yum remove PHP- bcmath
httpd -k restart
即可。