- hosts: test
  remote_user: admin
  become: yes

  tasks:
  - name: Debug
    debug: msg={{ ansible_os_family }}

  - set_fact: package_name=apache2
    when: ansible_os_family == "Debian"

  - set_fact: package_name=httpd
    when: ansible_os_family == "Redhat"


  - name: Update cache packages
    apt:
      update_cache: yes
      cache_valid_time: 3600


  - name: Install Apache2
    apt:
      name: {{ package_name }}
      state: latest
      when: ansible_os_family == "Debian"

  - name: Install httpd
    yum:
      name: {{ package_name }}
      state: latest
      when: ansible_os_family == "RedHat"

apt:
      name: {{ package_name }}
             ^ here
We could be wrong, but this one looks like it might be an issue with
missing quotes.  Always quote template expression brackets when they
start a value. For instance:

    with_items:
      - {{ foo }}

Should be written as:

    with_items:
      - "{{ foo }}"

- name: Install Apache2
        apt:
          name: "{{ package_name }}"

---

- name: install php5.6
  include_tasks: centos_php56.yml
  when: (ansible_distribution == "CentOS") and (php.version == "5.6")

- name: install php7.0
  include_tasks: centos_php70.yml
  when: (ansible_distribution == "CentOS") and (php.version == "7.0")

- name: install php56
  yum: name={{ item }} state=latest
  with_items:
    - php56w
    - php56w-opcache
    - php56w-pdo
    - php56w-mysql
    - php56w-mbstring
    - php56w-mcrypt
    - php56w-pear
    - php56w-pecl-apcu
    - php56w-gd
  notify: restart httpd

- name: install php
  yum: name=php state=latest
  notify: restart httpd