File: /var/www/vfconf/wp-content/themes/event-star/acmethemes/customizer/single-posts/feature-image.php
<?php
/*adding sections for feature image selection*/
$wp_customize->add_section( 'event-star-single-feature-image', array(
'capability' => 'edit_theme_options',
'title' => esc_html__( 'Feature Image Option', 'event-star' ),
'panel' => 'event-star-single-post'
) );
/*single image size*/
$wp_customize->add_setting( 'event_star_theme_options[event-star-single-img-size]', array(
'capability' => 'edit_theme_options',
'default' => $defaults['event-star-single-img-size'],
'sanitize_callback' => 'event_star_sanitize_select'
) );
$choices = event_star_get_image_sizes_options(1);
$wp_customize->add_control( 'event_star_theme_options[event-star-single-img-size]', array(
'choices' => $choices,
'label' => esc_html__( 'Image Size', 'event-star' ),
'section' => 'event-star-single-feature-image',
'settings' => 'event_star_theme_options[event-star-single-img-size]',
'type' => 'select'
) );