WordPress 后台用户列表显示用户登录次数和时间

/**
 * WordPress 后台用户列表显示<a href="https://www.wpdaxue.com/tag/%e7%94%a8%e6%88%b7%e7%99%bb%e5%bd%95" title="查看与【用户登录】相关的文章" target="_blank" rel="noopener">用户登录</a>次数和时间
 * https://www.wpdaxue.com/log-user-stats.html
 */
add_action('wp_login','freeman_your_last_login_time');
function freeman_your_last_login_time($login) {
	global $user_ID;
	$user = get_user_by('login', $login);
	$time_start = time();
	update_user_meta($user-&gt;ID, 'start_time', $time_start);
}
 
add_action('wp_logout', 'freeman_get_time_on_logout');
function freeman_get_time_on_logout($user_id) {
	global $user_ID;
	$user = get_user_by('id', $user_ID);
	$time_end = time();
	$time_start = get_user_meta($user-&gt;ID, 'start_time', true);
	$total_time = (intval($time_end) - intval($time_start));
	$total_time = round($total_time/60);
	$total_all_time = get_user_meta($user-&gt;ID, 'total_time', true);
	$total_time = $total_all_time + $total_time;
	update_user_meta($user-&gt;ID, 'total_time', $total_time);
 
 
	$logged_in_amount = get_user_meta($user-&gt;ID, 'logged_in_amount', true);
	$logged_in_amount = $logged_in_amount + 1;
	update_user_meta($user-&gt;ID, 'logged_in_amount', $logged_in_amount);
 
	$average_time = ($total_time/$logged_in_amount);
	update_user_meta($user-&gt;ID, 'average_time', $average_time);
}
 
add_filter('manage_users_columns', 'freeman_add_user_minutes_column');
function freeman_add_user_minutes_column($columns) {
	$columns['total_time'] = 'Total Minutes';
	$columns['logged_in_amount'] = '# of Logins';
	$columns['average_time'] = 'Ave. Min./Login';
	return $columns;
}
 
add_action('manage_users_custom_column',  'freeman_show_user_minutes_column_content', 10, 3);
function freeman_show_user_minutes_column_content($value, $column_name, $user_id) {
	$output = &quot; &quot;;
	$user = get_userdata( $user_id );
	if ( 'total_time' == $column_name )
		$output .= ($user-&gt;total_time);
	if ( 'logged_in_amount' == $column_name )
		$output .= ($user-&gt;logged_in_amount);
	if ( 'average_time' == $column_name )
		$output .= ($user-&gt;average_time);
	return $output;
}
 
add_action('admin_footer', 'freeman_custom_user_buttons');
function freeman_custom_user_buttons() {
	$screen = get_current_screen();
	if ( $screen-&gt;id != &quot;users&quot; )   // Only add to users.php page
	return;
	echo &quot;
	&lt;script type=\&quot;text/javascript\&quot;&gt;
		jQuery(document).ready(function($) {
			$('&lt;option&gt;').val('del_user_meta').text('Delete User Logs').appendTo(\&quot;select[name='action']\&quot;);
			$('&lt;option&gt;').val('export_user_meta').text('Export User Logs').appendTo(\&quot;select[name='action']\&quot;);
		});
	&lt;/script&gt;
	&quot;;
}
 
add_action('load-users.php', 'freeman_delete_users_info');
function freeman_delete_users_info() {
	if(isset($_GET['action']) &amp;&amp; $_GET['action'] === 'del_user_meta') {  // Check if our custom action was selected
		$del_users = $_GET['users'];  // Get array of user id's which were selected for meta deletion
		if ($del_users) {  // If any users were selected
			foreach ($del_users as $del_user) {
				delete_user_meta($del_user, 'logged_in_amount');
				delete_user_meta($del_user, 'total_time');
				delete_user_meta($del_user, 'average_time');
			}
		}
	}
}
 
add_action('load-users.php', 'freeman_export_users_info');
function freeman_export_users_info() {
	if(isset($_GET['action']) &amp;&amp; $_GET['action'] === 'export_user_meta') {
		$del_users = $_GET['users'];
		if ($del_users) {
			$fp = fopen('file.csv', 'w');
			$User_Name_Row = array(&quot;USERNAME&quot;, &quot;Total Minutes&quot;, &quot;# of Logins&quot;, &quot;Ave. Min./Login&quot;);
			fputcsv($fp, $User_Name_Row);
			foreach ($del_users as $del_user) {
				$user_info = get_userdata($del_user);
				$user_name = ($user_info-&gt;user_login);
				$logged_in_amount = get_user_meta($del_user, 'logged_in_amount', true);
				$total_time = get_user_meta($del_user, 'total_time', true);
				$average_time = get_user_meta($del_user, 'average_time', true);
 
				$list = array (
					array ($user_name, $total_time, $logged_in_amount, $average_time)
					);
 
				foreach ($list as $fields) {
					fputcsv($fp, $fields);
				}
			}
		}
 
		fclose($fp);
 
		$file=&quot;file.csv&quot;; //file location
		header('Content-Type: application/octet-stream');
		header('Content-Disposition: attachment; filename=&quot;'.basename($file).'&quot;');
		header('Content-Length: ' . filesize($file));
		readfile($file);
	}
}