How to Update php5 to php7 in CentOS

I got a notify from my WordPress dashboard today, it said “WordPress has detected that your site is running on an insecure version of PHP.”

I tried to update the php using their tutorial link, but got the following error:

Well. I have to update the system using the ssh.

1. 1. 1.  Login your root account using ssh or other tools.
      2. Update the php sources;
         rpm -Uvh https://mirror.webtatic.com/yum/el7/epel-release.rpm
rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
      3. Delete the old php files:
         yum remove php-common -y

      4. Install the new php version:
         yum install -y php72w php72w-opcache php72w-xml php72w-mcrypt php72w-gd php72w-devel php72w-mysql php72w-intl php72w-mbstring

      5. Check your systerm version:
         php -v
      6. Reboot your system
         reboot

   That’s it.