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Name	Size	Permission
ID3	[ DIR ]	drwxr-xr-x
IXR	[ DIR ]	drwxr-xr-x
PHPMailer	[ DIR ]	drwxr-xr-x
Requests	[ DIR ]	drwxr-xr-x
SimplePie	[ DIR ]	drwxr-xr-x
Text	[ DIR ]	drwxr-xr-x
css	[ DIR ]	drwxr-xr-x
customize	[ DIR ]	drwxr-xr-x
fonts	[ DIR ]	drwxr-xr-x
images	[ DIR ]	drwxr-xr-x
js	[ DIR ]	drwxr-xr-x
pomo	[ DIR ]	drwxr-xr-x
random_compat	[ DIR ]	drwxr-xr-x
rest-api	[ DIR ]	drwxr-xr-x
theme-compat	[ DIR ]	drwxr-xr-x
widgets	[ DIR ]	drwxr-xr-x
admin-bar.php	29.03 KB	-rw-r--r--
atomlib.php	11.56 KB	-rw-r--r--
author-template.php	16.22 KB	-rw-r--r--
blocks.php	12.43 KB	-rw-r--r--
bookmark-template.php	11.64 KB	-rw-r--r--
bookmark.php	13.55 KB	-rw-r--r--
bootstrap.php	4.11 KB	-rw-r--r--
cache.php	21.35 KB	-rw-r--r--
canonical.php	27.83 KB	-rw-r--r--
capabilities.php	28.84 KB	-rw-r--r--
category-template.php	50.8 KB	-rw-r--r--
category.php	12.41 KB	-rw-r--r--
class-IXR.php	2.51 KB	-rw-r--r--
class-feed.php	523 B	-rw-r--r--
class-http.php	36.22 KB	-rw-r--r--
class-json.php	39.53 KB	-rw-r--r--
class-oembed.php	30.73 KB	-rw-r--r--
class-phpass.php	7.15 KB	-rw-r--r--
class-phpmailer.php	668 B	-rw-r--r--
class-pop3.php	20.43 KB	-rw-r--r--
class-requests.php	29.09 KB	-rw-r--r--
class-simplepie.php	87.17 KB	-rw-r--r--
class-smtp.php	461 B	-rw-r--r--
class-walker-category-dropdown...	2.07 KB	-rw-r--r--
class-walker-category.php	6.62 KB	-rw-r--r--
class-walker-comment.php	13.33 KB	-rw-r--r--
class-walker-nav-menu.php	8.38 KB	-rw-r--r--
class-walker-page-dropdown.php	2.24 KB	-rw-r--r--
class-walker-page.php	6.78 KB	-rw-r--r--
class-wp-admin-bar.php	16.08 KB	-rw-r--r--
class-wp-ajax-response.php	5.01 KB	-rw-r--r--
class-wp-block-parser.php	14.86 KB	-rw-r--r--
class-wp-block-type-registry.p...	4.63 KB	-rw-r--r--
class-wp-block-type.php	4.7 KB	-rw-r--r--
class-wp-comment-query.php	42.21 KB	-rw-r--r--
class-wp-comment.php	8.75 KB	-rw-r--r--
class-wp-customize-control.php	24.49 KB	-rw-r--r--
class-wp-customize-manager.php	195.47 KB	-rw-r--r--
class-wp-customize-nav-menus.p...	53.08 KB	-rw-r--r--
class-wp-customize-panel.php	9.42 KB	-rw-r--r--
class-wp-customize-section.php	9.99 KB	-rw-r--r--
class-wp-customize-setting.php	27.59 KB	-rw-r--r--
class-wp-dependency.php	2.28 KB	-rw-r--r--
class-wp-editor.php	66.27 KB	-rw-r--r--
class-wp-embed.php	14.38 KB	-rw-r--r--
class-wp-error.php	4.81 KB	-rw-r--r--
class-wp-feed-cache-transient....	2.5 KB	-rw-r--r--
class-wp-feed-cache.php	749 B	-rw-r--r--
class-wp-hook.php	13.77 KB	-rw-r--r--
class-wp-http-cookie.php	6.44 KB	-rw-r--r--
class-wp-http-curl.php	11.64 KB	-rw-r--r--
class-wp-http-encoding.php	6.35 KB	-rw-r--r--
class-wp-http-ixr-client.php	3.25 KB	-rw-r--r--
class-wp-http-proxy.php	5.92 KB	-rw-r--r--
class-wp-http-requests-hooks.p...	1.83 KB	-rw-r--r--
class-wp-http-requests-respons...	4.19 KB	-rw-r--r--
class-wp-http-response.php	2.8 KB	-rw-r--r--
class-wp-http-streams.php	15.02 KB	-rw-r--r--
class-wp-image-editor-gd.php	13.18 KB	-rw-r--r--
class-wp-image-editor-imagick....	21.27 KB	-rw-r--r--
class-wp-image-editor.php	11.49 KB	-rw-r--r--
class-wp-list-util.php	6.25 KB	-rw-r--r--
class-wp-locale-switcher.php	4.91 KB	-rw-r--r--
class-wp-locale.php	14.26 KB	-rw-r--r--
class-wp-matchesmapregex.php	1.76 KB	-rw-r--r--
class-wp-meta-query.php	22.86 KB	-rw-r--r--
class-wp-metadata-lazyloader.p...	5.26 KB	-rw-r--r--
class-wp-network-query.php	16.79 KB	-rw-r--r--
class-wp-network.php	11.93 KB	-rw-r--r--
class-wp-oembed-controller.php	5.88 KB	-rw-r--r--
class-wp-post-type.php	17.81 KB	-rw-r--r--
class-wp-post.php	6.28 KB	-rw-r--r--
class-wp-query.php	127.67 KB	-rw-r--r--
class-wp-rewrite.php	58.42 KB	-rw-r--r--
class-wp-role.php	2.6 KB	-rw-r--r--
class-wp-roles.php	8.13 KB	-rw-r--r--
class-wp-session-tokens.php	7.25 KB	-rw-r--r--
class-wp-simplepie-file.php	2.27 KB	-rw-r--r--
class-wp-simplepie-sanitize-ks...	1.73 KB	-rw-r--r--
class-wp-site-query.php	26.78 KB	-rw-r--r--
class-wp-site.php	7.13 KB	-rw-r--r--
class-wp-tax-query.php	18.81 KB	-rw-r--r--
class-wp-taxonomy.php	10.41 KB	-rw-r--r--
class-wp-term-query.php	33.84 KB	-rw-r--r--
class-wp-term.php	5.14 KB	-rw-r--r--
class-wp-text-diff-renderer-in...	716 B	-rw-r--r--
class-wp-text-diff-renderer-ta...	16.06 KB	-rw-r--r--
class-wp-theme.php	48.09 KB	-rw-r--r--
class-wp-user-meta-session-tok...	2.92 KB	-rw-r--r--
class-wp-user-query.php	30.49 KB	-rw-r--r--
class-wp-user.php	20.91 KB	-rw-r--r--
class-wp-walker.php	12.39 KB	-rw-r--r--
class-wp-widget-factory.php	3.69 KB	-rw-r--r--
class-wp-widget.php	17.41 KB	-rw-r--r--
class-wp-xmlrpc-server.php	202.08 KB	-rw-r--r--
class-wp.php	24.18 KB	-rw-r--r--
class.wp-dependencies.php	11.24 KB	-rw-r--r--
class.wp-scripts.php	16.79 KB	-rw-r--r--
class.wp-styles.php	9.61 KB	-rw-r--r--
comment-template.php	87.64 KB	-rw-r--r--
comment.php	111.72 KB	-rw-r--r--
compat.php	15.99 KB	-rw-r--r--
cron.php	30.82 KB	-rw-r--r--
date.php	34.34 KB	-rw-r--r--
default-constants.php	9.61 KB	-rw-r--r--
default-filters.php	24.68 KB	-rw-r--r--
default-widgets.php	2.13 KB	-rw-r--r--
embed.php	44.04 KB	-rw-r--r--
feed-atom-comments.php	5.33 KB	-rw-r--r--
feed-atom.php	3.09 KB	-rw-r--r--
feed-rdf.php	2.67 KB	-rw-r--r--
feed-rss.php	1.25 KB	-rw-r--r--
feed-rss2-comments.php	4.09 KB	-rw-r--r--
feed-rss2.php	3.77 KB	-rw-r--r--
feed.php	19.29 KB	-rw-r--r--
formatting.php	277.86 KB	-rw-r--r--
functions.php	207.2 KB	-rw-r--r--
functions.wp-scripts.php	12.53 KB	-rw-r--r--
functions.wp-styles.php	8.03 KB	-rw-r--r--
general-template.php	138.46 KB	-rw-r--r--
http.php	21.9 KB	-rw-r--r--
kses.php	55.74 KB	-rw-r--r--
l10n.php	50.58 KB	-rw-r--r--
link-template.php	135.3 KB	-rw-r--r--
load.php	36.4 KB	-rw-r--r--
media-template.php	46.33 KB	-rw-r--r--
media.php	141.33 KB	-rw-r--r--
meta.php	44.98 KB	-rw-r--r--
mime.php	39.54 KB	-rw-r--r--
nav-menu-template.php	21.2 KB	-rw-r--r--
nav-menu.php	39.57 KB	-rw-r--r--
open_basedir.php	21 B	-rw-r--r--
option.php	67.91 KB	-rw-r--r--
pluggable.php	97.52 KB	-rw-r--r--
plugin.php	31.37 KB	-rw-r--r--
post-formats.php	6.86 KB	-rw-r--r--
post-template.php	60.07 KB	-rw-r--r--
post-thumbnail-template.php	8.75 KB	-rw-r--r--
post.php	227.37 KB	-rw-r--r--
query.php	31.24 KB	-rw-r--r--
rest-api.php	40.67 KB	-rw-r--r--
revision.php	21.08 KB	-rw-r--r--
rewrite.php	17.27 KB	-rw-r--r--
rss.php	22.66 KB	-rw-r--r--
script-loader.php	98.75 KB	-rw-r--r--
shortcodes.php	20.25 KB	-rw-r--r--
sitepad_functions.php	19.26 KB	-rw-r--r--
sitepad_functions2.php	21.99 KB	-rw-r--r--
spl-autoload-compat.php	2.51 KB	-rw-r--r--
taxonomy.php	152.95 KB	-rw-r--r--
template-loader.php	2.55 KB	-rw-r--r--
template.php	19.77 KB	-rw-r--r--
theme.php	99.09 KB	-rw-r--r--
update.php	24.81 KB	-rw-r--r--
user.php	120.69 KB	-rw-r--r--
vars.php	5.59 KB	-rw-r--r--
version.php	2.03 KB	-rw-r--r--
widgets.php	55.82 KB	-rw-r--r--
wlwmanifest.xml	1.03 KB	-rw-r--r--
wp-db.php	99.29 KB	-rw-r--r--
wp-diff.php	662 B	-rw-r--r--

Code Editor : class-wp-user.php

<?php
/**
 * User API: WP_User class
 *
 * @package WordPress
 * @subpackage Users
 * @since 4.4.0
 */

/**
 * Core class used to implement the WP_User object.
 *
 * @since 2.0.0
 *
 * @property string $nickname
 * @property string $description
 * @property string $user_description
 * @property string $first_name
 * @property string $user_firstname
 * @property string $last_name
 * @property string $user_lastname
 * @property string $user_login
 * @property string $user_pass
 * @property string $user_nicename
 * @property string $user_email
 * @property string $user_url
 * @property string $user_registered
 * @property string $user_activation_key
 * @property string $user_status
 * @property int    $user_level
 * @property string $display_name
 * @property string $spam
 * @property string $deleted
 * @property string $locale
 * @property string $rich_editing
 * @property string $syntax_highlighting
 */
class WP_User {
	/**
	 * User data container.
	 *
	 * @since 2.0.0
	 * @var object
	 */
	public $data;

/**
	 * The user's ID.
	 *
	 * @since 2.1.0
	 * @var int
	 */
	public $ID = 0;

/**
	 * The individual capabilities the user has been given.
	 *
	 * @since 2.0.0
	 * @var array
	 */
	public $caps = array();

/**
	 * User metadata option name.
	 *
	 * @since 2.0.0
	 * @var string
	 */
	public $cap_key;

/**
	 * The roles the user is part of.
	 *
	 * @since 2.0.0
	 * @var array
	 */
	public $roles = array();

/**
	 * All capabilities the user has, including individual and role based.
	 *
	 * @since 2.0.0
	 * @var bool[] Array of key/value pairs where keys represent a capability name and boolean values
	 *             represent whether the user has that capability.
	 */
	public $allcaps = array();

/**
	 * The filter context applied to user data fields.
	 *
	 * @since 2.9.0
	 * @var string
	 */
	public $filter = null;

/**
	 * The site ID the capabilities of this user are initialized for.
	 *
	 * @since 4.9.0
	 * @var int
	 */
	private $site_id = 0;

/**
	 * @since 3.3.0
	 * @var array
	 */
	private static $back_compat_keys;

/**
	 * Constructor.
	 *
	 * Retrieves the userdata and passes it to WP_User::init().
	 *
	 * @since 2.0.0
	 *
	 * @param int|string|stdClass|WP_User $id User's ID, a WP_User object, or a user object from the DB.
	 * @param string $name Optional. User's username
	 * @param int $site_id Optional Site ID, defaults to current site.
	 */
	public function __construct( $id = 0, $name = '', $site_id = '' ) {
		if ( ! isset( self::$back_compat_keys ) ) {
			$prefix                 = $GLOBALS['wpdb']->prefix;
			self::$back_compat_keys = array(
				'user_firstname'             => 'first_name',
				'user_lastname'              => 'last_name',
				'user_description'           => 'description',
				'user_level'                 => $prefix . 'user_level',
				$prefix . 'usersettings'     => $prefix . 'user-settings',
				$prefix . 'usersettingstime' => $prefix . 'user-settings-time',
			);
		}

if ( $id instanceof WP_User ) {
			$this->init( $id->data, $site_id );
			return;
		} elseif ( is_object( $id ) ) {
			$this->init( $id, $site_id );
			return;
		}

if ( ! empty( $id ) && ! is_numeric( $id ) ) {
			$name = $id;
			$id   = 0;
		}

if ( $id ) {
			$data = self::get_data_by( 'id', $id );
		} else {
			$data = self::get_data_by( 'login', $name );
		}

if ( $data ) {
			$this->init( $data, $site_id );
		} else {
			$this->data = new stdClass;
		}
	}

/**
	 * Sets up object properties, including capabilities.
	 *
	 * @since  3.3.0
	 *
	 * @param object $data    User DB row object.
	 * @param int    $site_id Optional. The site ID to initialize for.
	 */
	public function init( $data, $site_id = '' ) {
		$this->data = $data;
		$this->ID   = (int) $data->ID;

$this->for_site( $site_id );
	}

/**
	 * Return only the main user fields
	 *
	 * @since 3.3.0
	 * @since 4.4.0 Added 'ID' as an alias of 'id' for the `$field` parameter.
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param string $field The field to query against: 'id', 'ID', 'slug', 'email' or 'login'.
	 * @param string|int $value The field value
	 * @return object|false Raw user object
	 */
	public static function get_data_by( $field, $value ) {
		global $wpdb;

// 'ID' is an alias of 'id'.
		if ( 'ID' === $field ) {
			$field = 'id';
		}

if ( 'id' == $field ) {
			// Make sure the value is numeric to avoid casting objects, for example,
			// to int 1.
			if ( ! is_numeric( $value ) ) {
				return false;
			}
			$value = intval( $value );
			if ( $value < 1 ) {
				return false;
			}
		} else {
			$value = trim( $value );
		}

if ( ! $value ) {
			return false;
		}

switch ( $field ) {
			case 'id':
				$user_id  = $value;
				$db_field = 'ID';
				break;
			case 'slug':
				$user_id  = wp_cache_get( $value, 'userslugs' );
				$db_field = 'user_nicename';
				break;
			case 'email':
				$user_id  = wp_cache_get( $value, 'useremail' );
				$db_field = 'user_email';
				break;
			case 'login':
				$value    = sanitize_user( $value );
				$user_id  = wp_cache_get( $value, 'userlogins' );
				$db_field = 'user_login';
				break;
			default:
				return false;
		}

if ( false !== $user_id ) {
			if ( $user = wp_cache_get( $user_id, 'users' ) ) {
				return $user;
			}
		}

if ( ! $user = $wpdb->get_row(
			$wpdb->prepare(
				"SELECT * FROM $wpdb->users WHERE $db_field = %s LIMIT 1",
				$value
			)
		) ) {
			return false;
		}

update_user_caches( $user );

return $user;
	}

/**
	 * Magic method for checking the existence of a certain custom field.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key User meta key to check if set.
	 * @return bool Whether the given user meta key is set.
	 */
	public function __isset( $key ) {
		if ( 'id' == $key ) {
			_deprecated_argument(
				'WP_User->id',
				'2.1.0',
				sprintf(
					/* translators: %s: WP_User->ID */
					__( 'Use %s instead.' ),
					'<code>WP_User->ID</code>'
				)
			);
			$key = 'ID';
		}

if ( isset( $this->data->$key ) ) {
			return true;
		}

if ( isset( self::$back_compat_keys[ $key ] ) ) {
			$key = self::$back_compat_keys[ $key ];
		}

return metadata_exists( 'user', $this->ID, $key );
	}

/**
	 * Magic method for accessing custom fields.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key User meta key to retrieve.
	 * @return mixed Value of the given user meta key (if set). If `$key` is 'id', the user ID.
	 */
	public function __get( $key ) {
		if ( 'id' == $key ) {
			_deprecated_argument(
				'WP_User->id',
				'2.1.0',
				sprintf(
					/* translators: %s: WP_User->ID */
					__( 'Use %s instead.' ),
					'<code>WP_User->ID</code>'
				)
			);
			return $this->ID;
		}

if ( isset( $this->data->$key ) ) {
			$value = $this->data->$key;
		} else {
			if ( isset( self::$back_compat_keys[ $key ] ) ) {
				$key = self::$back_compat_keys[ $key ];
			}
			$value = get_user_meta( $this->ID, $key, true );
		}

if ( $this->filter ) {
			$value = sanitize_user_field( $key, $value, $this->ID, $this->filter );
		}

return $value;
	}

/**
	 * Magic method for setting custom user fields.
	 *
	 * This method does not update custom fields in the database. It only stores
	 * the value on the WP_User instance.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key   User meta key.
	 * @param mixed  $value User meta value.
	 */
	public function __set( $key, $value ) {
		if ( 'id' == $key ) {
			_deprecated_argument(
				'WP_User->id',
				'2.1.0',
				sprintf(
					/* translators: %s: WP_User->ID */
					__( 'Use %s instead.' ),
					'<code>WP_User->ID</code>'
				)
			);
			$this->ID = $value;
			return;
		}

$this->data->$key = $value;
	}

/**
	 * Magic method for unsetting a certain custom field.
	 *
	 * @since 4.4.0
	 *
	 * @param string $key User meta key to unset.
	 */
	public function __unset( $key ) {
		if ( 'id' == $key ) {
			_deprecated_argument(
				'WP_User->id',
				'2.1.0',
				sprintf(
					/* translators: %s: WP_User->ID */
					__( 'Use %s instead.' ),
					'<code>WP_User->ID</code>'
				)
			);
		}

if ( isset( $this->data->$key ) ) {
			unset( $this->data->$key );
		}

if ( isset( self::$back_compat_keys[ $key ] ) ) {
			unset( self::$back_compat_keys[ $key ] );
		}
	}

/**
	 * Determine whether the user exists in the database.
	 *
	 * @since 3.4.0
	 *
	 * @return bool True if user exists in the database, false if not.
	 */
	public function exists() {
		return ! empty( $this->ID );
	}

/**
	 * Retrieve the value of a property or meta key.
	 *
	 * Retrieves from the users and usermeta table.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key Property
	 * @return mixed
	 */
	public function get( $key ) {
		return $this->__get( $key );
	}

/**
	 * Determine whether a property or meta key is set
	 *
	 * Consults the users and usermeta tables.
	 *
	 * @since 3.3.0
	 *
	 * @param string $key Property
	 * @return bool
	 */
	public function has_prop( $key ) {
		return $this->__isset( $key );
	}

/**
	 * Return an array representation.
	 *
	 * @since 3.5.0
	 *
	 * @return array Array representation.
	 */
	public function to_array() {
		return get_object_vars( $this->data );
	}

/**
	 * Makes private/protected methods readable for backward compatibility.
	 *
	 * @since 4.3.0
	 *
	 * @param string   $name      Method to call.
	 * @param array    $arguments Arguments to pass when calling.
	 * @return mixed|false Return value of the callback, false otherwise.
	 */
	public function __call( $name, $arguments ) {
		if ( '_init_caps' === $name ) {
			return call_user_func_array( array( $this, $name ), $arguments );
		}
		return false;
	}

/**
	 * Set up capability object properties.
	 *
	 * Will set the value for the 'cap_key' property to current database table
	 * prefix, followed by 'capabilities'. Will then check to see if the
	 * property matching the 'cap_key' exists and is an array. If so, it will be
	 * used.
	 *
	 * @since 2.1.0
	 * @deprecated 4.9.0 Use WP_User::for_site()
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param string $cap_key Optional capability key
	 */
	protected function _init_caps( $cap_key = '' ) {
		global $wpdb;

_deprecated_function( __METHOD__, '4.9.0', 'WP_User::for_site()' );

if ( empty( $cap_key ) ) {
			$this->cap_key = $wpdb->get_blog_prefix( $this->site_id ) . 'capabilities';
		} else {
			$this->cap_key = $cap_key;
		}

$this->caps = $this->get_caps_data();

$this->get_role_caps();
	}

/**
	 * Retrieves all of the capabilities of the roles of the user, and merges them with individual user capabilities.
	 *
	 * All of the capabilities of the roles of the user are merged with the user's individual capabilities. This means
	 * that the user can be denied specific capabilities that their role might have, but the user is specifically denied.
	 *
	 * @since 2.0.0
	 *
	 * @return bool[] Array of key/value pairs where keys represent a capability name and boolean values
	 *                represent whether the user has that capability.
	 */
	public function get_role_caps() {
		$switch_site = false;
		if ( is_multisite() && $this->site_id != get_current_blog_id() ) {
			$switch_site = true;

switch_to_blog( $this->site_id );
		}

$wp_roles = wp_roles();

// Filter out caps that are not role names and assign to $this->roles.
		if ( is_array( $this->caps ) ) {
			$this->roles = array_filter( array_keys( $this->caps ), array( $wp_roles, 'is_role' ) );
		}

// Build $allcaps from role caps, overlay user's $caps.
		$this->allcaps = array();
		foreach ( (array) $this->roles as $role ) {
			$the_role      = $wp_roles->get_role( $role );
			$this->allcaps = array_merge( (array) $this->allcaps, (array) $the_role->capabilities );
		}
		$this->allcaps = array_merge( (array) $this->allcaps, (array) $this->caps );

if ( $switch_site ) {
			restore_current_blog();
		}

return $this->allcaps;
	}

/**
	 * Add role to user.
	 *
	 * Updates the user's meta data option with capabilities and roles.
	 *
	 * @since 2.0.0
	 *
	 * @param string $role Role name.
	 */
	public function add_role( $role ) {
		if ( empty( $role ) ) {
			return;
		}

$this->caps[ $role ] = true;
		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();

/**
		 * Fires immediately after the user has been given a new role.
		 *
		 * @since 4.3.0
		 *
		 * @param int    $user_id The user ID.
		 * @param string $role    The new role.
		 */
		do_action( 'add_user_role', $this->ID, $role );
	}

/**
	 * Remove role from user.
	 *
	 * @since 2.0.0
	 *
	 * @param string $role Role name.
	 */
	public function remove_role( $role ) {
		if ( ! in_array( $role, $this->roles ) ) {
			return;
		}
		unset( $this->caps[ $role ] );
		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();

/**
		 * Fires immediately after a role as been removed from a user.
		 *
		 * @since 4.3.0
		 *
		 * @param int    $user_id The user ID.
		 * @param string $role    The removed role.
		 */
		do_action( 'remove_user_role', $this->ID, $role );
	}

/**
	 * Set the role of the user.
	 *
	 * This will remove the previous roles of the user and assign the user the
	 * new one. You can set the role to an empty string and it will remove all
	 * of the roles from the user.
	 *
	 * @since 2.0.0
	 *
	 * @param string $role Role name.
	 */
	public function set_role( $role ) {
		if ( 1 == count( $this->roles ) && $role == current( $this->roles ) ) {
			return;
		}

foreach ( (array) $this->roles as $oldrole ) {
			unset( $this->caps[ $oldrole ] );
		}

$old_roles = $this->roles;
		if ( ! empty( $role ) ) {
			$this->caps[ $role ] = true;
			$this->roles         = array( $role => true );
		} else {
			$this->roles = false;
		}
		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();

/**
		 * Fires after the user's role has changed.
		 *
		 * @since 2.9.0
		 * @since 3.6.0 Added $old_roles to include an array of the user's previous roles.
		 *
		 * @param int      $user_id   The user ID.
		 * @param string   $role      The new role.
		 * @param string[] $old_roles An array of the user's previous roles.
		 */
		do_action( 'set_user_role', $this->ID, $role, $old_roles );
	}

/**
	 * Choose the maximum level the user has.
	 *
	 * Will compare the level from the $item parameter against the $max
	 * parameter. If the item is incorrect, then just the $max parameter value
	 * will be returned.
	 *
	 * Used to get the max level based on the capabilities the user has. This
	 * is also based on roles, so if the user is assigned the Administrator role
	 * then the capability 'level_10' will exist and the user will get that
	 * value.
	 *
	 * @since 2.0.0
	 *
	 * @param int $max Max level of user.
	 * @param string $item Level capability name.
	 * @return int Max Level.
	 */
	public function level_reduction( $max, $item ) {
		if ( preg_match( '/^level_(10|[0-9])$/i', $item, $matches ) ) {
			$level = intval( $matches[1] );
			return max( $max, $level );
		} else {
			return $max;
		}
	}

/**
	 * Update the maximum user level for the user.
	 *
	 * Updates the 'user_level' user metadata (includes prefix that is the
	 * database table prefix) with the maximum user level. Gets the value from
	 * the all of the capabilities that the user has.
	 *
	 * @since 2.0.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 */
	public function update_user_level_from_caps() {
		global $wpdb;
		$this->user_level = array_reduce( array_keys( $this->allcaps ), array( $this, 'level_reduction' ), 0 );
		update_user_meta( $this->ID, $wpdb->get_blog_prefix() . 'user_level', $this->user_level );
	}

/**
	 * Add capability and grant or deny access to capability.
	 *
	 * @since 2.0.0
	 *
	 * @param string $cap Capability name.
	 * @param bool $grant Whether to grant capability to user.
	 */
	public function add_cap( $cap, $grant = true ) {
		$this->caps[ $cap ] = $grant;
		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();
	}

/**
	 * Remove capability from user.
	 *
	 * @since 2.0.0
	 *
	 * @param string $cap Capability name.
	 */
	public function remove_cap( $cap ) {
		if ( ! isset( $this->caps[ $cap ] ) ) {
			return;
		}
		unset( $this->caps[ $cap ] );
		update_user_meta( $this->ID, $this->cap_key, $this->caps );
		$this->get_role_caps();
		$this->update_user_level_from_caps();
	}

/**
	 * Remove all of the capabilities of the user.
	 *
	 * @since 2.1.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 */
	public function remove_all_caps() {
		global $wpdb;
		$this->caps = array();
		delete_user_meta( $this->ID, $this->cap_key );
		delete_user_meta( $this->ID, $wpdb->get_blog_prefix() . 'user_level' );
		$this->get_role_caps();
	}

/**
	 * Whether the user has a specific capability.
	 *
	 * While checking against a role in place of a capability is supported in part, this practice is discouraged as it
	 * may produce unreliable results.
	 *
	 * @since 2.0.0
	 *
	 * @see map_meta_cap()
	 *
	 * @param string $cap           Capability name.
	 * @param int    $object_id,... Optional. ID of a specific object to check against if `$cap` is a "meta" capability.
	 *                              Meta capabilities such as `edit_post` and `edit_user` are capabilities used by
	 *                              by the `map_meta_cap()` function to map to primitive capabilities that a user or
	 *                              role has, such as `edit_posts` and `edit_others_posts`.
	 * @return bool Whether the user has the given capability, or, if `$object_id` is passed, whether the user has
	 *              the given capability for that object.
	 */
	public function has_cap( $cap ) {
		if ( is_numeric( $cap ) ) {
			_deprecated_argument( __FUNCTION__, '2.0.0', __( 'Usage of user levels is deprecated. Use capabilities instead.' ) );
			$cap = $this->translate_level_to_cap( $cap );
		}

$args = array_slice( func_get_args(), 1 );
		$args = array_merge( array( $cap, $this->ID ), $args );
		$caps = call_user_func_array( 'map_meta_cap', $args );

// Multisite super admin has all caps by definition, Unless specifically denied.
		if ( is_multisite() && is_super_admin( $this->ID ) ) {
			if ( in_array( 'do_not_allow', $caps ) ) {
				return false;
			}
			return true;
		}

/**
		 * Dynamically filter a user's capabilities.
		 *
		 * @since 2.0.0
		 * @since 3.7.0 Added the `$user` parameter.
		 *
		 * @param bool[]   $allcaps Array of key/value pairs where keys represent a capability name and boolean values
		 *                          represent whether the user has that capability.
		 * @param string[] $caps    Required primitive capabilities for the requested capability.
		 * @param array    $args {
		 *     Arguments that accompany the requested capability check.
		 *
		 *     @type string    $0 Requested capability.
		 *     @type int       $1 Concerned user ID.
		 *     @type mixed  ...$2 Optional second and further parameters, typically object ID.
		 * }
		 * @param WP_User  $user    The user object.
		 */
		$capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args, $this );

// Everyone is allowed to exist.
		$capabilities['exist'] = true;

// Nobody is allowed to do things they are not allowed to do.
		unset( $capabilities['do_not_allow'] );

// Must have ALL requested caps.
		foreach ( (array) $caps as $cap ) {
			if ( empty( $capabilities[ $cap ] ) ) {
				return false;
			}
		}

return true;
	}

/**
	 * Convert numeric level to level capability name.
	 *
	 * Prepends 'level_' to level number.
	 *
	 * @since 2.0.0
	 *
	 * @param int $level Level number, 1 to 10.
	 * @return string
	 */
	public function translate_level_to_cap( $level ) {
		return 'level_' . $level;
	}

/**
	 * Set the site to operate on. Defaults to the current site.
	 *
	 * @since 3.0.0
	 * @deprecated 4.9.0 Use WP_User::for_site()
	 *
	 * @param int $blog_id Optional. Site ID, defaults to current site.
	 */
	public function for_blog( $blog_id = '' ) {
		_deprecated_function( __METHOD__, '4.9.0', 'WP_User::for_site()' );

$this->for_site( $blog_id );
	}

/**
	 * Sets the site to operate on. Defaults to the current site.
	 *
	 * @since 4.9.0
	 *
	 * @global wpdb $wpdb WordPress database abstraction object.
	 *
	 * @param int $site_id Site ID to initialize user capabilities for. Default is the current site.
	 */
	public function for_site( $site_id = '' ) {
		global $wpdb;

if ( ! empty( $site_id ) ) {
			$this->site_id = absint( $site_id );
		} else {
			$this->site_id = get_current_blog_id();
		}

$this->cap_key = $wpdb->get_blog_prefix( $this->site_id ) . 'capabilities';

$this->caps = $this->get_caps_data();

$this->get_role_caps();
	}

/**
	 * Gets the ID of the site for which the user's capabilities are currently initialized.
	 *
	 * @since 4.9.0
	 *
	 * @return int Site ID.
	 */
	public function get_site_id() {
		return $this->site_id;
	}

/**
	 * Gets the available user capabilities data.
	 *
	 * @since 4.9.0
	 *
	 * @return array User capabilities array.
	 */
	private function get_caps_data() {
		$caps = get_user_meta( $this->ID, $this->cap_key, true );

if ( ! is_array( $caps ) ) {
			return array();
		}

return $caps;
	}
}

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Code Editor : class-wp-user.php