为什么在打印WP_USER对象时不显示First_Name和Last_Name？

下面是一些简单的代码，

$user = get_userdata(5);
print_r($user);
echo $user->first_name;

结果呢，

WP_User Object
(
[data] => stdClass Object
    (
        [ID] => 9
        [user_login] => adam@corolla.com
        [user_pass] => $P$Bck6WbL2RpNuUt4VjZGIp525jccfkE/
        [user_nicename] => adamcorolla-com
        [user_email] => adam@corolla.com
        [user_url] => 
        [user_registered] => 2016-04-14 20:35:51
        [user_activation_key] => 
        [user_status] => 0
        [display_name] => addycorolla
    )

[ID] => 9
[caps] => Array
    (
        [subscriber] => 1
    )

[cap_key] => fccv_capabilities
[roles] => Array
    (
        [0] => subscriber
    )

[allcaps] => Array
    (
        [read] => 1
        [level_0] => 1
        [subscriber] => 1
    )

[filter] => 
)

Adam

为什么echo $user->first_name 当属性未列在print_r?

/** * Magic method for accessing custom fields * * @since 3.3.0 * @param string $key * @return mixed */ public function __get( $key ) { if ( \'id\' == $key ) { _deprecated_argument( \'WP_User->id\', \'2.1\', __( \'Use <code>WP_User->ID</code> instead.\' ) ); 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; }

如何从USERS-edit.php中删除颜色选择器代码

我知道我不应该改变Wordpress的核心。但如果我想在“用户编辑”中使用仪表板用户配置文件页面。php和删除大块代码（如颜色选择器）的方法。从第259行到第336行-我想全部删除。<?php if ( ! ( IS_PROFILE_PAGE && ! $user_can_edit ) ) : ?> <tr class="user-rich-editing-wrap"> <th scope="

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