Social Auto Poster - To remain `Publish Post On` checkbox ticked

wpw-auto-poster-checked-publishbox.php

<?php

function wpw_auto_poster_checked_social_publishbox( $publish_arr ) {
	
	// Social network title for which you want to remain ticked the 'Publish Post On' checked box
	$publish_arr = array(
				'facebook',
				'twitter',
				'linkedin',
				'tumblr',
				'delicious',
				'bufferapp'
			);
	
	return $publish_arr;
}
add_filter('wpw_auto_poster_checked_publishbox', 'wpw_auto_poster_checked_social_publishbox' );

function wpw_auto_poster_checked_social_publishbox_meta( $meta ) {
	$meta = 'on';
	return $meta;
}
add_filter('wpw_auto_poster_checked_publishbox_meta', 'wpw_auto_poster_checked_social_publishbox_meta' );