Is it possible to map multiple attributes using Jinja/Ansible?

Using Jinja statements:

- set_fact:
    php_command_result:
      results: [{"value":{"svn_tag":"20150703r1_6.36_homeland"},"key":"ui"},{"value":{"svn_tag":"20150702r1_6.36_homeland"},"key":"api"}]

- debug:
    msg: "{% for result in php_command_result.results %}\
        {{ result.key }} - {{ result.value.svn_tag }} |
      {% endfor %}"

Outputs:

ok: [localhost] => {
    "msg": "ui - 20150703r1_6.36_homeland | api - 20150702r1_6.36_homeland | "
}

If you want the results on separate lines:

- debug:
    msg: "{% set output = [] %}\
        {% for result in php_command_result.results %}\
          {{ output.append( result.key ~ ' - ' ~ result.value.svn_tag) }}\
        {% endfor %}\
      {{ output }}"

Outputs:

ok: [localhost] => {
    "msg": [
        "ui - 20150703r1_6.36_homeland", 
        "api - 20150702r1_6.36_homeland"
    ]
}

Either of these can be put on one line if desired:

- debug:
    msg: "{% for result in php_command_result.results %}{{ result.key }} - {{ result.value.svn_tag }} | {% endfor %}"

- debug:
    msg: "{% set output = [] %}{% for result in php_command_result.results %}{{ output.append( result.key ~ ' - ' ~ result.value.svn_tag) }}{% endfor %}{{ output }}"

Here is solution without custom filter_plugin or running shell command. However, it requires additional fact to be set in a with_items loop(php_fmt).

- hosts: localhost
  connection: local
  gather_facts: false 
  tasks:
    - set_fact: 
        php_command_result:
          results: '[{"value":{"svn_tag":"20150703r1_6.36_homeland"},"key":"ui"},{"value":{"svn_tag":"20150702r1_6.36_homeland"},"key":"api"}]'

    - set_fact:
        php_fmt: "{{ php_fmt|default([])|union([item.key+' -- '+item.value.svn_tag ]) }}"
      with_items: "{{ php_command_result.results }}"

    - debug: 
        msg: "{{php_fmt|join(',')}}"