OS:CentOs7
1.查看当前PHP版本
[root
disconfzbox]#php-vPHP5.4.16(cli)(built:Apr:02:01)
Copyright(c)-ThePHPGroup
ZendEnginev2.4.0,Copyright(c)-ZendTechnologies
2.查看当前PHP相关的安装包,删除之
yumlistinstalled
grepphp
yumremovephp
yumremovephp-*
3.更换RPM源
#Centos5.X:
rpm-Uvh