WordPress/wp-admin/users.php

<?php
/**
 * Users administration panel.
 *
 * @package WordPress
 * @subpackage Administration
 */

/** WordPress Administration Bootstrap */
require_once( './admin.php' );

if ( ! current_user_can( 'list_users' ) )
	wp_die( __( 'Cheatin&#8217; uh?' ) );

$wp_list_table = _get_list_table('WP_Users_List_Table');
$pagenum = $wp_list_table->get_pagenum();
$title = __('Users');
$parent_file = 'users.php';

add_screen_option( 'per_page', array('label' => _x( 'Users', 'users per page (screen options)' )) );

// contextual help - choose Help on the top right of admin panel to preview this.
add_contextual_help($current_screen,
    '<p>' . __('This screen lists all the existing users for your site. Each user has one of five defined roles as set by the site admin: Site Administrator, Editor, Author, Contributor, or Subscriber. Users with roles other than Administrator will see fewer options in the dashboard navigation when they are logged in, based on their role.') . '</p>' .
    '<p>' . __('You can customize the display of information on this screen as you can on other screens, by using the Screen Options tab and the on-screen filters.') . '</p>' .
    '<p>' . __('To add a new user for your site, click the Add New button at the top of the screen or Add New in the Users menu section.') . '</p>' .
    '<p><strong>' . __('For more information:') . '</strong></p>' .
    '<p>' . __('<a href="http://codex.wordpress.org/Users_Screen" target="_blank">Documentation on Managing Users</a>') . '</p>' .
    '<p>' . __('<a href="http://codex.wordpress.org/Roles_and_Capabilities" target="_blank">Descriptions of Roles and Capabilities</a>') . '</p>' .
    '<p>' . __('<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>') . '</p>'
);

if ( empty($_REQUEST) ) {
	$referer = '<input type="hidden" name="wp_http_referer" value="'. esc_attr(stripslashes($_SERVER['REQUEST_URI'])) . '" />';
} elseif ( isset($_REQUEST['wp_http_referer']) ) {
	$redirect = remove_query_arg(array('wp_http_referer', 'updated', 'delete_count'), stripslashes($_REQUEST['wp_http_referer']));
	$referer = '<input type="hidden" name="wp_http_referer" value="' . esc_attr($redirect) . '" />';
} else {
	$redirect = 'users.php';
	$referer = '';
}

$update = '';

switch ( $wp_list_table->current_action() ) {

/* Bulk Dropdown menu Role changes */
case 'promote':
	check_admin_referer('bulk-users');

	if ( ! current_user_can( 'promote_users' ) )
		wp_die( __( 'You can&#8217;t edit that user.' ) );

	if ( empty($_REQUEST['users']) ) {
		wp_redirect($redirect);
		exit();
	}

	$editable_roles = get_editable_roles();
	if ( empty( $editable_roles[$_REQUEST['new_role']] ) )
		wp_die(__('You can&#8217;t give users that role.'));

	$userids = $_REQUEST['users'];
	$update = 'promote';
	foreach ( $userids as $id ) {
		$id = (int) $id;

		if ( ! current_user_can('promote_user', $id) )
			wp_die(__('You can&#8217;t edit that user.'));
		// The new role of the current user must also have promote_users caps
		if ( $id == $current_user->ID && !$wp_roles->role_objects[$_REQUEST['new_role']]->has_cap('promote_users') ) {
			$update = 'err_admin_role';
			continue;
		}

		// If the user doesn't already belong to the blog, bail.
		if ( is_multisite() && !is_user_member_of_blog( $id ) )
			wp_die(__('Cheatin&#8217; uh?'));

		$user = new WP_User($id);
		$user->set_role($_REQUEST['new_role']);
	}

	wp_redirect(add_query_arg('update', $update, $redirect));
	exit();

break;

case 'dodelete':
	if ( is_multisite() )
		wp_die( __('User deletion is not allowed from this screen.') );

	check_admin_referer('delete-users');

	if ( empty($_REQUEST['users']) ) {
		wp_redirect($redirect);
		exit();
	}

	if ( ! current_user_can( 'delete_users' ) )
		wp_die(__('You can&#8217;t delete users.'));

	$userids = $_REQUEST['users'];
	$update = 'del';
	$delete_count = 0;

	foreach ( (array) $userids as $id) {
		$id = (int) $id;

		if ( ! current_user_can( 'delete_user', $id ) )
			wp_die(__( 'You can&#8217;t delete that user.' ) );

		if ( $id == $current_user->ID ) {
			$update = 'err_admin_del';
			continue;
		}
		switch ( $_REQUEST['delete_option'] ) {
		case 'delete':
			if ( current_user_can('delete_user', $id) )
				wp_delete_user($id);
			break;
		case 'reassign':
			if ( current_user_can('delete_user', $id) )
				wp_delete_user($id, $_REQUEST['reassign_user']);
			break;
		}
		++$delete_count;
	}

	$redirect = add_query_arg( array('delete_count' => $delete_count, 'update' => $update), $redirect);
	wp_redirect($redirect);
	exit();

break;

case 'delete':
	if ( is_multisite() )
		wp_die( __('User deletion is not allowed from this screen.') );

	check_admin_referer('bulk-users');

	if ( empty($_REQUEST['users']) && empty($_REQUEST['user']) ) {
		wp_redirect($redirect);
		exit();
	}

	if ( ! current_user_can( 'delete_users' ) )
		$errors = new WP_Error( 'edit_users', __( 'You can&#8217;t delete users.' ) );

	if ( empty($_REQUEST['users']) )
		$userids = array(intval($_REQUEST['user']));
	else
		$userids = (array) $_REQUEST['users'];

	include ('admin-header.php');
?>
<form action="" method="post" name="updateusers" id="updateusers">
<?php wp_nonce_field('delete-users') ?>
<?php echo $referer; ?>

<div class="wrap">
<?php screen_icon(); ?>
<h2><?php _e('Delete Users'); ?></h2>
<p><?php echo _n( 'You have specified this user for deletion:', 'You have specified these users for deletion:', count( $userids ) ); ?></p>
<ul>
<?php
	$go_delete = 0;
	foreach ( $userids as $id ) {
		$id = (int) $id;
		$user = new WP_User($id);
		if ( $id == $current_user->ID ) {
			echo "<li>" . sprintf(__('ID #%1s: %2s <strong>The current user will not be deleted.</strong>'), $id, $user->user_login) . "</li>\n";
		} else {
			echo "<li><input type=\"hidden\" name=\"users[]\" value=\"" . esc_attr($id) . "\" />" . sprintf(__('ID #%1s: %2s'), $id, $user->user_login) . "</li>\n";
			$go_delete++;
		}
	}
	?>
	</ul>
<?php if ( $go_delete ) : ?>
	<fieldset><p><legend><?php echo _n( 'What should be done with posts and links owned by this user?', 'What should be done with posts and links owned by these users?', $go_delete ); ?></legend></p>
	<ul style="list-style:none;">
		<li><label><input type="radio" id="delete_option0" name="delete_option" value="delete" checked="checked" />
		<?php _e('Delete all posts and links.'); ?></label></li>
		<li><input type="radio" id="delete_option1" name="delete_option" value="reassign" />
		<?php echo '<label for="delete_option1">'.__('Attribute all posts and links to:').'</label>';
		wp_dropdown_users( array( 'name' => 'reassign_user', 'exclude' => array_diff( $userids, array($current_user->ID) ) ) ); ?></li>
	</ul></fieldset>
	<input type="hidden" name="action" value="dodelete" />
	<?php submit_button( __('Confirm Deletion'), 'secondary' ); ?>
<?php else : ?>
	<p><?php _e('There are no valid users selected for deletion.'); ?></p>
<?php endif; ?>
</div>
</form>
<?php

break;

case 'doremove':
	check_admin_referer('remove-users');

	if ( ! is_multisite() )
		wp_die( __( 'You can&#8217;t remove users.' ) );

	if ( empty($_REQUEST['users']) ) {
		wp_redirect($redirect);
		exit;
	}

	if ( ! current_user_can( 'remove_users' ) )
		wp_die( __( 'You can&#8217;t remove users.' ) );

	$userids = $_REQUEST['users'];

	$update = 'remove';
 	foreach ( $userids as $id ) {
		$id = (int) $id;
		if ( $id == $current_user->ID && !is_super_admin() ) {
			$update = 'err_admin_remove';
			continue;
		}
		if ( !current_user_can('remove_user', $id) ) {
			$update = 'err_admin_remove';
			continue;
		}
		remove_user_from_blog($id, $blog_id);
	}

	$redirect = add_query_arg( array('update' => $update), $redirect);
	wp_redirect($redirect);
	exit;

break;

case 'remove':

	check_admin_referer('bulk-users');

	if ( ! is_multisite() )
		wp_die( __( 'You can&#8217;t remove users.' ) );

	if ( empty($_REQUEST['users']) && empty($_REQUEST['user']) ) {
		wp_redirect($redirect);
		exit();
	}

	if ( !current_user_can('remove_users') )
		$error = new WP_Error('edit_users', __('You can&#8217;t remove users.'));

	if ( empty($_REQUEST['users']) )
		$userids = array(intval($_REQUEST['user']));
	else
		$userids = $_REQUEST['users'];

	include ('admin-header.php');
?>
<form action="" method="post" name="updateusers" id="updateusers">
<?php wp_nonce_field('remove-users') ?>
<?php echo $referer; ?>

<div class="wrap">
<?php screen_icon(); ?>
<h2><?php _e('Remove Users from Site'); ?></h2>
<p><?php _e('You have specified these users for removal:'); ?></p>
<ul>
<?php
	$go_remove = false;
 	foreach ( $userids as $id ) {
		$id = (int) $id;
 		$user = new WP_User($id);
		if ( $id == $current_user->ID && !is_super_admin() ) {
			echo "<li>" . sprintf(__('ID #%1s: %2s <strong>The current user will not be removed.</strong>'), $id, $user->user_login) . "</li>\n";
		} elseif ( !current_user_can('remove_user', $id) ) {
			echo "<li>" . sprintf(__('ID #%1s: %2s <strong>You don\'t have permission to remove this user.</strong>'), $id, $user->user_login) . "</li>\n";
		} else {
			echo "<li><input type=\"hidden\" name=\"users[]\" value=\"{$id}\" />" . sprintf(__('ID #%1s: %2s'), $id, $user->user_login) . "</li>\n";
			$go_remove = true;
		}
 	}
 	?>
<?php if ( $go_remove ) : ?>
		<input type="hidden" name="action" value="doremove" />
		<?php submit_button( __('Confirm Removal'), 'secondary' ); ?>
<?php else : ?>
	<p><?php _e('There are no valid users selected for removal.'); ?></p>
<?php endif; ?>
</div>
</form>
<?php

break;

default:

	if ( !empty($_GET['_wp_http_referer']) ) {
		wp_redirect(remove_query_arg(array('_wp_http_referer', '_wpnonce'), stripslashes($_SERVER['REQUEST_URI'])));
		exit;
	}

	$wp_list_table->prepare_items();
	$total_pages = $wp_list_table->get_pagination_arg( 'total_pages' );
	if ( $pagenum > $total_pages && $total_pages > 0 ) {
		wp_redirect( add_query_arg( 'paged', $total_pages ) );
		exit;
	}
	include('./admin-header.php');

	$messages = array();
	if ( isset($_GET['update']) ) :
		switch($_GET['update']) {
		case 'del':
		case 'del_many':
			$delete_count = isset($_GET['delete_count']) ? (int) $_GET['delete_count'] : 0;
			$messages[] = '<div id="message" class="updated"><p>' . sprintf(_n('%s user deleted', '%s users deleted', $delete_count), $delete_count) . '</p></div>';
			break;
		case 'add':
			$messages[] = '<div id="message" class="updated"><p>' . __('New user created.') . '</p></div>';
			break;
		case 'promote':
			$messages[] = '<div id="message" class="updated"><p>' . __('Changed roles.') . '</p></div>';
			break;
		case 'err_admin_role':
			$messages[] = '<div id="message" class="error"><p>' . __('The current user&#8217;s role must have user editing capabilities.') . '</p></div>';
			$messages[] = '<div id="message" class="updated"><p>' . __('Other user roles have been changed.') . '</p></div>';
			break;
		case 'err_admin_del':
			$messages[] = '<div id="message" class="error"><p>' . __('You can&#8217;t delete the current user.') . '</p></div>';
			$messages[] = '<div id="message" class="updated"><p>' . __('Other users have been deleted.') . '</p></div>';
			break;
		case 'remove':
			$messages[] = '<div id="message" class="updated fade"><p>' . __('User removed from this site.') . '</p></div>';
			break;
		case 'err_admin_remove':
			$messages[] = '<div id="message" class="error"><p>' . __("You can't remove the current user.") . '</p></div>';
			$messages[] = '<div id="message" class="updated fade"><p>' . __('Other users have been removed.') . '</p></div>';
			break;
		}
	endif; ?>

<?php if ( isset($errors) && is_wp_error( $errors ) ) : ?>
	<div class="error">
		<ul>
		<?php
			foreach ( $errors->get_error_messages() as $err )
				echo "<li>$err</li>\n";
		?>
		</ul>
	</div>
<?php endif;

if ( ! empty($messages) ) {
	foreach ( $messages as $msg )
		echo $msg;
} ?>

<div class="wrap">
<?php screen_icon(); ?>
<h2>
<?php
echo esc_html( $title );
if ( current_user_can( 'create_users' ) ) { ?>
	<a href="user-new.php" class="add-new-h2"><?php echo esc_html_x( 'Add New', 'user' ); ?></a>
<?php } elseif ( is_multisite() && current_user_can( 'promote_users' ) ) { ?>
	<a href="user-new.php" class="add-new-h2"><?php echo esc_html_x( 'Add Existing', 'user' ); ?></a>
<?php }

if ( $usersearch )
	printf( '<span class="subtitle">' . __('Search results for &#8220;%s&#8221;') . '</span>', esc_html( $usersearch ) ); ?>
</h2>

<?php $wp_list_table->views(); ?>

<form action="" method="get">

<?php $wp_list_table->search_box( __( 'Search Users' ), 'user' ); ?>

<?php $wp_list_table->display(); ?>
</form>

<br class="clear" />
</div>
<?php
break;

} // end of the $doaction switch

include('./admin-footer.php');