OCS Inventory NG 2.3 need a more recent php version that 5.3. As it you will find update version of php in the remi repository (https://blog.remirepo.net/pages/Config-en)
To update, simple backup your database and then run setup.sh from the tar.gz you will find on our website.
Another way is to use the RPM version for centos 7 : http://rpm.ocsinventory-ng.org/enterprise/7/x86_64/ocsinventory-release-7-2.el7.ocs.noarch.rpm
To update, simple backup your database and then run setup.sh from the tar.gz you will find on our website.
Another way is to use the RPM version for centos 7 : http://rpm.ocsinventory-ng.org/enterprise/7/x86_64/ocsinventory-release-7-2.el7.ocs.noarch.rpm