Unsuccessful installation of php56w-common on CentOS 6.9 - centos

Question

Whenever try to install, the server throws this error;
Error: Package: 1:php56w-pear-1.10.4-1.w6.noarch (#webtatic)
Requires: php56w-xml
Removing: php56w-xml-5.6.31-1.w6.x86_64 (#webtatic)
php56w-xml = 5.6.31-1.w6
Obsoleted By: php-xml-7.0.33-20.el6.remi.x86_64 (remi-php70)
Not found
Updated By: php56w-xml-5.6.40-1.w6.x86_64 (webtatic)
php56w-xml = 5.6.40-1.w6
Error: Package: 1:php56w-pear-1.10.4-1.w6.noarch (#webtatic)
Requires: php56w-pcre
Removing: php56w-common-5.6.31-1.w6.x86_64 (#webtatic)
php56w-pcre
Obsoleted By: php-common-7.0.33-20.el6.remi.x86_64 (remi-php70)
Not found
Updated By: php56w-common-5.6.40-1.w6.x86_64 (webtatic)
php56w-pcre
Error: Package: 1:php56w-pear-1.10.4-1.w6.noarch (#webtatic)
Requires: php56w-zlib
Removing: php56w-common-5.6.31-1.w6.x86_64 (#webtatic)
php56w-zlib
Obsoleted By: php-common-7.0.33-20.el6.remi.x86_64 (remi-php70)
Not found
Updated By: php56w-common-5.6.40-1.w6.x86_64 (webtatic)
php56w-zlib
Error: Package: 1:php56w-pear-1.10.4-1.w6.noarch (#webtatic)
Requires: php56w-ftp
Removing: php56w-common-5.6.31-1.w6.x86_64 (#webtatic)
php56w-ftp
Obsoleted By: php-common-7.0.33-20.el6.remi.x86_64 (remi-php70)
Not found
Updated By: php56w-common-5.6.40-1.w6.x86_64 (webtatic)
php56w-ftp
Error: Package: 1:php56w-pear-1.10.4-1.w6.noarch (#webtatic)
Requires: php56w-tokenizer
Removing: php56w-common-5.6.31-1.w6.x86_64 (#webtatic)
php56w-tokenizer
Obsoleted By: php-common-7.0.33-20.el6.remi.x86_64 (remi-php70)
Not found
Updated By: php56w-common-5.6.40-1.w6.x86_64 (webtatic)
php56w-tokenizer
Error: Package: 1:php56w-pear-1.10.4-1.w6.noarch (#webtatic)
Requires: php56w-cli
Removing: php56w-cli-5.6.31-1.w6.x86_64 (#webtatic)
php56w-cli = 5.6.31-1.w6
Obsoleted By: php-cli-7.0.33-20.el6.remi.x86_64 (remi-php70)
Not found
Updated By: php56w-cli-5.6.40-1.w6.x86_64 (webtatic)
php56w-cli = 5.6.40-1.w6
Error: Package: 1:php56w-pear-1.10.4-1.w6.noarch (#webtatic)
Requires: php56w-bz2
Removing: php56w-common-5.6.31-1.w6.x86_64 (#webtatic)
php56w-bz2
Obsoleted By: php-common-7.0.33-20.el6.remi.x86_64 (remi-php70)
Not found
Updated By: php56w-common-5.6.40-1.w6.x86_64 (webtatic)
php56w-bz2
Error: Package: 1:php56w-pear-1.10.4-1.w6.noarch (#webtatic)
Requires: php56w-posix
Removing: php56w-process-5.6.31-1.w6.x86_64 (#webtatic)
php56w-posix
Obsoleted By: php-process-7.0.33-20.el6.remi.x86_64 (remi-php70)
Not found
Updated By: php56w-process-5.6.40-1.w6.x86_64 (webtatic)
php56w-posix
You could try using --skip-broken to work around the problem
** Found 1 pre-existing rpmdb problem(s), 'yum check' output follows:
webmin-1.941-1.noarch has missing requires of unzip
.. install failed!
And while trying to update "php56w-common" the whole bunch of below mentioned libs as well listed in the control panel.
Building complete list of packages ...
php56w-common 5.6.31-1.w6 5.6.40-1.w6 Common files for PHP
php56w-cli 5.6.31-1.w6 5.6.40-1.w6 Command-line interface for PHP
php56w-process 5.6.31-1.w6 5.6.40-1.w6 Modules for PHP script using system process interfaces
php56w-xml 5.6.31-1.w6 5.6.40-1.w6 A module for PHP applications which use XML
php56w-cli 5.6.31-1.w6 5.6.40-1.w6 Command-line interface for PHP
php56w-common 5.6.31-1.w6 5.6.40-1.w6 Common files for PHP
php56w-process 5.6.31-1.w6 5.6.40-1.w6 Modules for PHP script using system process interfaces
php56w-xml 5.6.31-1.w6 5.6.40-1.w6 A module for PHP applications which use XML
I would appreciate any input. Thanks

Answer 1

You should not mix various providers for PHP stack (remi + webtatic)
Notice: PHP 5.6 have reached its EOL in January 2019, so I heartily recommend to use a supported version.
I also recommend to not use webtatic repository which seems dead (no change since October 2019)
yum-config-manager --disable webtatic
If you really need PHP 5.6, you can install it from remi's repository, see the Wizard for proper instruction.