Multiselect

PHP

<?php

$tea_content = array(
    array(
        'type' => 'multiselect',
        'title' => 'Select the Minions that you may know',
        'id' => 'my_multiselect_field_id',
        'default' => 'henry',
        'description' => 'Pay attention to this question ;)',
        'options' => array(
            'henry' => 'Henry',
            'jacques' => 'Jacques',
            'kevin' => 'Kevin',
            'tom' => 'Tom',
        ),
    ),
);

Retrieve data

Using the _get_option('my_multiselect_field_id') method, you'll get (with a json_encode() display):

JSON

["henry", "jacques", "kevin", "tom"]