How to get keyname of array in the view of twig

Question

Im coding in twig to visualize values that I get from php and I want that the keyname of array appear above the values.

{% if user.address %}

        <tr>

            {% for address in user.address %}

                {% for parts in address %}

                    <td width="25%">

                        {{ parts }}

                    </td>  

                {%endfor%}

            {% endfor %}

        </tr>              

{% endif %}

In the part of under

{% for address in user.address %}

I want put (

{{address.key}}

or the real sentence that is necessary to get keyname of array )

The array is like:

  -address : array:4 [▼

    "Door" => array:1 [▼

      0 => "225"

    ]

    "Street" => array:1 [▼

      0 => "Pinky street"

    ]

    "District" => array:1 [▼

      0 => "District north"

    ]

    "City" => array:1 [▼

      0 => "New York"

    ]

  ]

Edit:

Ty for the help the result is :

{% if user.address %}

        <tr>

           {% for key, address in user.address %}

                    <td width="25%">

                        {{ key }}

                    </td>

                {%endfor%}

        </tr> 

        <tr>

           {% for address in user.address %}

                {% for parts in address %}

                    <td width="25%">

                        {{ parts }}

                    </td>  

                    {%endfor%}

           {%endfor%}

        </tr>

    {% endif %}

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Answer 1

you can try this:

{% for key, address in user.address %}

In this way you have the key and the value

How to get keyname of array in the view of twig

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