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Radio

A list of radio buttons.

radio option type — Theme Settings example 
$options = [
	'demo_radio' => [
		'label' => __( 'Radio', 'unysonplus' ),  // or false to hide the label column
		'type' => 'radio',
		'value' => 'c2',
		'desc' => __( 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.',
			'unysonplus' ),
		'choices' => [
			'c1' => __( 'Radio 1 Custom Text', 'unysonplus' ),
			'c2' => __( 'Radio 2 Custom Text', 'unysonplus' ),
			'c3' => __( 'Radio 3 Custom Text', 'unysonplus' ),
		],
		'help' => sprintf( "%s \n\n'\"<br/><br/>\n\n <b>%s</b>",
			__( 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.',
				'unysonplus' ),
			__( 'Sed ut perspiciatis, unde omnis iste natus error sit voluptatem accusantium doloremque laudantium',
				'unysonplus' )
		),
		// — Optional attributes you can add —
		// 'inline' => false,
		// 'attr' => [ 'class' => 'my-class', 'data-foo' => 'bar' ],  // extra HTML attributes
	],
];

Reading the value​

radio returns a string — output it directly.

In a shortcode​

The shortcode framework passes the option values into view.php as $atts:

echo esc_html( $atts['demo_radio'] );

In a page template — a per-page option​

Options defined on a post/page (a metabox) are read with fw_get_db_post_option():

$value = fw_get_db_post_option( get_the_ID(), 'demo_radio' );
echo esc_html( $value );

When the field is one of several inside a box/group, read the whole group once and pick fields by key — the common CPT pattern (e.g. a review or book box):

$book = fw_get_db_post_option( get_the_ID(), 'book' );
echo esc_html( $book['demo_radio'] );

In Theme Settings — a global option​

Global options are read with fw_get_db_settings_option():

$value = fw_get_db_settings_option( 'demo_radio' );
echo esc_html( $value );

Saved value​

fw_print( fw_get_db_settings_option( 'demo_radio' ) ) outputs — the shape of this option type's stored value:

choice_2