Display post select input field.

Via select2 input field

array(
    'id'		=> 'select2_posts_list_field',
    'title'		=> __('Post select field','text-domain'),
    'details'	=> __('Description of multi select2 for Page list field','text-domain'),
    'type'		=> 'select2',
    'args'		=> 'WPADMINSETTINGS_POSTS_ARRAY',
),
array(
    'id'		=> 'select2_posts_list_field',
    'title'		=> __('Post select field','text-domain'),
    'details'		=> __('Description of multi select2 for Page list field','text-domain'),
    'type'		=> 'select2',
    'multiple'		=> true,
    'args'		=> 'WPADMINSETTINGS_POSTS_ARRAY',
),

Via select

array(
    'id'		=> 'select2_posts_list_field',
    'title'		=> __('Post select field','text-domain'),
    'details'	=> __('Description of multi select2 for Page list field','text-domain'),
    'type'		=> 'select',
    'multiple'		=> true,
    'args'		=> 'WPADMINSETTINGS_POSTS_ARRAY',
),
array(
    'id'		=> 'select2_posts_list_field',
    'title'		=> __('Post select field','text-domain'),
    'details'	=> __('Description of multi select2 for Page list field','text-domain'),
    'type'		=> 'select',
    //'multiple'		=> true,
    'args'		=> 'WPADMINSETTINGS_POSTS_ARRAY',
),

Via radio

array(
    'id'		=> 'select2_posts_list_field',
    'title'		=> __('Post select field','text-domain'),
    'details'	=> __('Description of multi select2 for Page list field','text-domain'),
    'type'		=> 'radio',
    'args'		=> 'WPADMINSETTINGS_POSTS_ARRAY',
),

Via checkbox

array(
    'id'		=> 'select2_posts_list_field',
    'title'		=> __('Post select field','text-domain'),
    'details'	=> __('Description of multi select2 for Page list field','text-domain'),
    'type'		=> 'checkbox',
    'args'		=> 'WPADMINSETTINGS_POSTS_ARRAY',
),