Centos 6.9 vesta upgrading php7 - centos

Question

I'm totally new to linux and trying to upgrade php5.6 to php7. I followed the steps in a tutorial and in step 5 it told me to remove php so i did. In step 6 i had to use that command and all should be fine:
yum --enablerepo=remi-php70 install php70-php php70-php-pear php70-php-bcmath php70-php-pecl-jsond-devel php70-php-mysqlnd php70-php-gd php70-php-common php70-php-fpm php70-php-intl php70-php-cli php70-php php70-php-xml php70-php-opcache php70-php-pecl-apcu php70-php-pecl-jsond php70-php-pdo php70-php-gmp php70-php-process php70-php-pecl-imagick php70-php-devel php70-php-mbstring
But console said i needed these dependencies to install php7. Also there is an error says "libdb4 conflicts with filesystem".
Output:
Error: Package: rpm-4.8.0-55.el6.x86_64 (base)
Requires: libdb-4.7.so()(64bit)
Available: db4-4.7.25-22.el6.x86_64 (base)
libdb-4.7.so()(64bit)
Error: Package: iproute-2.6.32-54.el6.x86_64 (base)
Requires: libdb-4.7.so()(64bit)
Available: db4-4.7.25-22.el6.x86_64 (base)
libdb-4.7.so()(64bit)
Error: Package: apr-util-1.3.9-3.el6_0.1.x86_64 (base)
Requires: libdb-4.7.so()(64bit)
Available: db4-4.7.25-22.el6.x86_64 (base)
libdb-4.7.so()(64bit)
Error: Package: libdb4-utils-4.8.30-13.el7.x86_64 (epel)
Requires: libc.so.6(GLIBC_2.14)(64bit)
Error: Package: libdb4-4.8.30-13.el7.x86_64 (epel)
Requires: libc.so.6(GLIBC_2.17)(64bit)
Error: Package: httpd-tools-2.2.15-115.el6.1.x86_64 (vesta)
Requires: libdb-4.7.so()(64bit)
Available: db4-4.7.25-22.el6.x86_64 (base)
libdb-4.7.so()(64bit)
Error: Package: pam-1.1.1-24.el6.x86_64 (base)
Requires: libdb-4.7.so()(64bit)
Available: db4-4.7.25-22.el6.x86_64 (base)
libdb-4.7.so()(64bit)
Error: libdb4 conflicts with filesystem-2.4.30-3.el6.x86_64
Error: Package: httpd-2.2.15-115.el6.1.x86_64 (vesta)
Requires: libdb-4.7.so()(64bit)
Available: db4-4.7.25-22.el6.x86_64 (base)
libdb-4.7.so()(64bit)
Error: Package: cyrus-sasl-lib-2.1.23-15.el6_6.2.x86_64 (base)
Requires: libdb-4.7.so()(64bit)
Available: db4-4.7.25-22.el6.x86_64 (base)
libdb-4.7.so()(64bit)
Error: Package: rpm-libs-4.8.0-55.el6.x86_64 (base)
Requires: libdb-4.7.so()(64bit)
Available: db4-4.7.25-22.el6.x86_64 (base)
libdb-4.7.so()(64bit)
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
(I made a lot of search in google tried to download one by one but when I try to install a rpm i downloaded, it requires another dependencies. And it looks like it is going to ask for dependencies forever. I tried to find a command that will find all dependencies and install, it didnt work. I got the same output)
Is there a way to Install php7 or a way to get php5.6 back?

Answer 1

Error: Package: libdb4-utils-4.8.30-13.el7.x86_64 (epel) Requires: libc.so.6(GLIBC_2.14)(64bit)
Looks like you are trying to mix repository from CentOS 6 and CentOS 7 (the el7 suffix), probably EPEL.
See yum repolist to see which repository need to be fixed.
So remove what is needed, at least
yum remove epel-release
yum clean all
To install any PHP version on CentOS from my repository, see the Wizard instructions