Take the 2-minute tour ×  I've removed php5.1 using  yum remove
php\*  I've installed php5.3 using  yum install php53  Now I
need to make sure that certain supporting packages are
installed. So I tried this:  yum install php-xml php-pear php-
mhash php-mcrypt php-mysql php-pdo php-gd  But I get errors,
like:  Error: php53-common conflicts with php-common  I found
some instructions here but am not sure if I should trust them or
not.  Thank you  share|improve this question You need to install
the php53-* extensions. The php-* extensions you mention above,
are for the php package you removed (and require php-common - if
you look closely, it will probably be one of the dependencies).
So try, php53-xml, etc. Some packages might not be included in
the CentOS repository, I would recommend adding the EPEL
repository if you need other extensions (as it is fully
compatible with CentOS, and trusted). I'd advise against adding
random repositories (such as the one from the article you
linked). –  cyberx86 Jan 28 '12 at 3:4