confirm_delete_users() WordPress Function

function confirm_delete_users( $users ) {
	$current_user = wp_get_current_user();
	if ( ! is_array( $users ) || empty( $users ) ) {
		return false;
	}
	?>
	<h1><?php esc_html_e( 'Users' ); ?></h1>

	<?php if ( 1 === count( $users ) ) : ?>
		<p><?php _e( 'You have chosen to delete the user from all networks and sites.' ); ?></p>
	<?php else : ?>
		<p><?php _e( 'You have chosen to delete the following users from all networks and sites.' ); ?></p>
	<?php endif; ?>

	<form action="users.php?action=dodelete" method="post">
	<input type="hidden" name="dodelete" />
	<?php
	wp_nonce_field( 'ms-users-delete' );
	$site_admins = get_super_admins();
	$admin_out   = '<option value="' . esc_attr( $current_user->ID ) . '">' . $current_user->user_login . '</option>';
	?>
	<table class="form-table" role="presentation">
	<?php
	$allusers = (array) $_POST['allusers'];
	foreach ( $allusers as $user_id ) {
		if ( '' !== $user_id && '0' !== $user_id ) {
			$delete_user = get_userdata( $user_id );

			if ( ! current_user_can( 'delete_user', $delete_user->ID ) ) {
				wp_die(
					sprintf(
						/* translators: %s: User login. */
						__( 'Warning! User %s cannot be deleted.' ),
						$delete_user->user_login
					)
				);
			}

			if ( in_array( $delete_user->user_login, $site_admins, true ) ) {
				wp_die(
					sprintf(
						/* translators: %s: User login. */
						__( 'Warning! User cannot be deleted. The user %s is a network administrator.' ),
						'<em>' . $delete_user->user_login . '</em>'
					)
				);
			}
			?>
			<tr>
				<th scope="row"><?php echo $delete_user->user_login; ?>
					<?php echo '<input type="hidden" name="user[]" value="' . esc_attr( $user_id ) . '" />' . "\n"; ?>
				</th>
			<?php
			$blogs = get_blogs_of_user( $user_id, true );

			if ( ! empty( $blogs ) ) {
				?>
				<td><fieldset><p><legend>
				<?php
				printf(
					/* translators: %s: User login. */
					__( 'What should be done with content owned by %s?' ),
					'<em>' . $delete_user->user_login . '</em>'
				);
				?>
				</legend></p>
				<?php
				foreach ( (array) $blogs as $key => $details ) {
					$blog_users = get_users(
						array(
							'blog_id' => $details->userblog_id,
							'fields'  => array( 'ID', 'user_login' ),
						)
					);

					if ( is_array( $blog_users ) && ! empty( $blog_users ) ) {
						$user_site      = "<a href='" . esc_url( get_home_url( $details->userblog_id ) ) . "'>{$details->blogname}</a>";
						$user_dropdown  = '<label for="reassign_user" class="screen-reader-text">' . __( 'Select a user' ) . '</label>';
						$user_dropdown .= "<select name='blog[$user_id][$key]' id='reassign_user'>";
						$user_list      = '';

						foreach ( $blog_users as $user ) {
							if ( ! in_array( (int) $user->ID, $allusers, true ) ) {
								$user_list .= "<option value='{$user->ID}'>{$user->user_login}</option>";
							}
						}

						if ( '' === $user_list ) {
							$user_list = $admin_out;
						}

						$user_dropdown .= $user_list;
						$user_dropdown .= "</select>\n";
						?>
						<ul style="list-style:none;">
							<li>
								<?php
								/* translators: %s: Link to user's site. */
								printf( __( 'Site: %s' ), $user_site );
								?>
							</li>
							<li><label><input type="radio" id="delete_option0" name="delete[<?php echo $details->userblog_id . '][' . $delete_user->ID; ?>]" value="delete" checked="checked" />
							<?php _e( 'Delete all content.' ); ?></label></li>
							<li><label><input type="radio" id="delete_option1" name="delete[<?php echo $details->userblog_id . '][' . $delete_user->ID; ?>]" value="reassign" />
							<?php _e( 'Attribute all content to:' ); ?></label>
							<?php echo $user_dropdown; ?></li>
						</ul>
						<?php
					}
				}
				echo '</fieldset></td></tr>';
			} else {
				?>
				<td><p><?php _e( 'User has no sites or content and will be deleted.' ); ?></p></td>
			<?php } ?>
			</tr>
			<?php
		}
	}

	?>
	</table>
	<?php
	/** This action is documented in wp-admin/users.php */
	do_action( 'delete_user_form', $current_user, $allusers );

	if ( 1 === count( $users ) ) :
		?>
		<p><?php _e( 'Once you hit &#8220;Confirm Deletion&#8221;, the user will be permanently removed.' ); ?></p>
	<?php else : ?>
		<p><?php _e( 'Once you hit &#8220;Confirm Deletion&#8221;, these users will be permanently removed.' ); ?></p>
		<?php
	endif;

	submit_button( __( 'Confirm Deletion' ), 'primary' );
	?>
	</form>
	<?php
	return true;
}