screen-options-admin_page.php

<?php
/**
 * Renders the admin page.
 */
function admin_page() {
	$screen    = get_current_screen();
	$parent    = get_admin_page_parent();
	$user_meta = get_usermeta( get_current_user_id(), 'wordpress_screen_options_demo_options' );
	?>
	<div class="wrap <?php echo esc_attr( $parent ); ?>">
		<h1><?php echo esc_html( get_admin_page_title() ); ?></h1>

		<div class="notice notice-info is-dismissable">
			<p>
				<?php
				// Translators: %s is the URL to the GitHub repository.
				echo wp_kses_post( sprintf( __( 'This is a demonstration of the Screen Options framework. More information can be found at <a href="%s">the GitHub repo</a>. Click on the Screen Options tab in the upper right hand corner of the page to test the screen options.', 'wordpress-screen-options-demo' ), 'https://github.com/jazzsequence/WordPress-Screen-Options-Framework' ) );
				?>
			</p>
		</div> <!-- .notice -->
	</div>
	<div class="<?php echo esc_attr( $parent ); ?>-body">
		<h2><?php esc_html_e( 'Screen option values', 'wordpress-screen-options-demo' ); ?></h2>
		<div class="description">
			<?php if ( $user_meta ) : ?>
				<p>
					<?php esc_html_e( 'Screen Options have been saved to user meta. Displaying the user settings below.', 'wordpress-screen-options-demo' ); ?>
				</p>
			<?php else : ?>
				<p>
					<?php esc_html_e( 'Screen Options have not yet been saved for this user. Displaying the default settings below.', 'wordpress-screen-options-demo' ); ?>
				</p>
			<?php endif; ?>
		</div>
		<ul class="screen-options-list">
			<?php
			foreach ( $this->options() as $option_name ) {
				$option     = "wordpress_screen_options_demo_$option_name";
				if ( $user_meta ) {
					$user_value = isset( $user_meta[ $option_name ] ) ? 'true' : 'false';
				} else {
					$user_value = var_export( $screen->get_option( $option, 'value' ), true );
				}
				?>
				<li class="<?php echo esc_attr( $option_name ); ?>-option">
					<strong><?php echo esc_html( ucwords( $option_name ) ); ?>:</strong> <code><?php echo esc_html( $user_value ); ?></code>
				</li>
			<?php } ?>
		</ul>
	</div>
	<?php
}