Textarea

PHP

<?php

$tea_content = array(
    array(
        'type' => 'textarea',
        'title' => 'How do Penguins drink their cola?',
        'id' => 'my_textarea_field_id',
        'default' => 'On the rocks.',
        'placeholder' => 'Tell us how?',
        'description' => 'A simple question to know if you will be able to survive to the Penguin domination.',
    ),
);

Retrieve data

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

JSON

"On the rocks."