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Select multiple choices from different sources: posts, taxonomies, users or a custom array.
array(
'type' => 'multi-select',
'value' => array( 'choice-1', 'choice-3' ),
'attr' => array( 'class' => 'custom-class', 'data-foo' => 'bar' ),
'label' => __('Label', '{domain}'),
'desc' => __('Description', '{domain}'),
'help' => __('Help tip', '{domain}'),
/**
* Set population method
* Are available: 'posts', 'taxonomy', 'users', 'array'
*/
'population' => 'array',
/**
* Set post types, taxonomies, user roles to search for
*
* 'population' => 'posts'
* 'source' => 'page',
*
* 'population' => 'taxonomy'
* 'source' => 'category',
*
* 'population' => 'users'
* 'source' => array( 'editor', 'subscriber', 'author' ),
*
* 'population' => 'array'
* 'source' => '' // will populate with 'choices' array
*/
'source' => '',
/**
* Set the number of posts/users/taxonomies that multi-select will be prepopulated
* Or set the value to false in order to disable this functionality.
*/
'prepopulate' => 10,
/**
* An array with the available choices
* Used only when 'population' => 'array'
*/
'choices' => array(
'choice-1' => __('Choice 1', '{domain}'),
'choice-2' => __('Choice 2', '{domain}'),
'choice-3' => __('Choice 3', '{domain}'),
),
/**
* Set maximum items number that can be selected
*/
'limit' => 100,
)