function show_hide_author() {
	global $post;

	// Exit if there's no post object (e.g., on homepage or archive page)
	if ( ! isset( $post ) || ! $post instanceof WP_Post ) {
		return;
	}

	$ID = $post->ID;

	// Get current full URL without www/https for comparison
	$url = current_full_url();
	$replace = array('/http:\/\/www./', '/https:\/\/www./', '/www./', '/\n\r/');
	$with    = array('', '', '', '\n');
	$current_url_nohttp = preg_replace($replace, $with, $url);

	// Get plugin options
	$options_array = get_option('show_author_options');

	// If no settings found, hide author globally
	if ( ! is_array($options_array) ) {
		remove_author();
		return;
	}

	// Prepare and normalize show/hide URL lists
	$urls_show_array = array_map('trim', explode("\n", preg_replace($replace, $with, $options_array['option_url_show'] ?? '')));
	$urls_hide_array = array_map('trim', explode("\n", preg_replace($replace, $with, $options_array['option_url_hide'] ?? '')));

	// 1. Check for custom show URLs
	if ( in_array($current_url_nohttp, $urls_show_array, true) ) {
		return; // Show author
	}

	// 2. Check for custom hide URLs
	if ( in_array($current_url_nohttp, $urls_hide_array, true) ) {
		remove_author();
		return;
	}

	// 3. Check for individual post override
	$per_post_setting = get_post_meta( $ID, '_show_author_inthis_post', true );
	if ( ! empty($options_array['option_individual']) ) {
		if ( $per_post_setting === 'inthis_post' ) {
			return; // Show author
		}
		if ( $per_post_setting === 'not_inthis_post' ) {
			remove_author();
			return;
		}
	}

	// 4. Check post type setting
	$current_post_type = get_post_type( $ID );
	if ( empty($options_array['option_' . $current_post_type]) ) {
		remove_author();
		return;
	}

	// Otherwise, show author (no action needed)
}