widget

// widget

function legacy_widget_areas() {
    register_sidebar( array(
        'name' => __( 'Image Add Widgets Area', 'legacy' ),
        'id' => 'image_add', // Here (image_add) is id
        'before_widget' => '<div class="single_sidebar">',
        'after_widget' => '</div>',
        'before_title' => '<h2>',
        'after_title' => '</h2>',
    ) );
    // add another widget sidebar

}
add_action('widgets_init', 'legacy_widget_areas');

// After creating a widget we have to the below code our location
/*

<?php if ( ! dynamic_sidebar( 'image_add' ) ) : ?>    // Here (image_add) is id
    // if needed then we can also more show data here
<?php endif; ?>


*/