Overview

The hidden field creates a simple hidden input. It’s usually used to store custom data that cannot be changed.

Settings

This field doesn’t have any specific settings. It only uses common field settings.

To store the hidden value, put it in the std setting.

Sample code

array(
    'id'   => 'field_id',
    'type' => 'hidden',
    // Hidden field must have predefined value
    'std'  => 'Hidden value',
),

Data

Although the value is fixed in the code, this field still saves it in the post meta.

Template usage

To get the field value, use this code

$value = rwmb_meta( $field_id );
echo $value;

Read more about rwmb_meta().