快进到WordPress 4.4-它将支持role__in 属性lucky version number, 因为它将支持role__in 和role__not_in 的属性WP_User_Query 班

因此，要包括订阅者、贡献者和作者角色，我们可以简单地使用：

$users = get_users( [ \'role__in\' => [ \'subscriber\', \'subscriber\', \'author\' ] ] );

检查车票#22212 为了整个故事！

您也可以通过拨打get_users 或使用单个WP_User_Query 通过使用meta_query 参数：

global $wpdb;
$blog_id = get_current_blog_id();

$user_query = new WP_User_Query( array(
    \'meta_query\' => array(
        \'relation\' => \'OR\',
        array(
            \'key\' => $wpdb->get_blog_prefix( $blog_id ) . \'capabilities\',
            \'value\' => \'role_one\',
            \'compare\' => \'like\'
        ),
        array(
            \'key\' => $wpdb->get_blog_prefix( $blog_id ) . \'capabilities\',
            \'value\' => \'role_two\',
            \'compare\' => \'like\'
        )
    )
) );

我通过使用以下函数解决了此问题：

function get_clients() { 

    $users = array();
    $roles = array(\'subscriber\', \'custom_role1\', \'custom_role2\');

    foreach ($roles as $role) :
        $users_query = new WP_User_Query( array( 
            \'fields\' => \'all_with_meta\', 
            \'role\' => $role, 
            \'orderby\' => \'display_name\'
            ) );
        $results = $users_query->get_results();
        if ($results) $users = array_merge($users, $results);
    endforeach;

    return $users;
}

$users_array = get_clients();

$users = array_merge( get_users(\'role=subscriber\'), get_users(\'role=contributor\') );

使用的问题array_merge 就是不能使用分页。我真的很喜欢@Andy Adams的解决方案，但如果您正在搜索许多角色，使用他的元查询将导致very slow 查询（内部执行新INNER JOIN 对于每个元查询）。

我的解决方案是使用正则表达式元查询：

<?php

global $wpdb;
$blog_id = get_current_blog_id();

$roles = array(\'editor\', \'administrator\');
$meta_query = array(
    \'key\' => $wpdb->get_blog_prefix($blog_id) . \'capabilities\',
    \'value\' => \'"(\' . implode(\'|\', array_map(\'preg_quote\', $roles)) . \')"\',
    \'compare\' => \'REGEXP\'
);
$user_query = new WP_User_Query(array(
    \'meta_query\' = array($meta_query)
));

?>

array(
    \'meta_query\' => array(
        array(
            \'key\' => \'wp_capabilities\'
            \'value\' => \'"(editor|administrator)"\'
            \'compare\' => \'REGEXP\'
        )
    )
);

您可以简单地合并更多用户查询结果。假设您想将两者都包括在内Author 和Editor 角色。为每个案例定义查询，然后使用array_merge 合并到单个阵列中。

$xuser_query = new WP_user_query(array( \'role\' => \'Author\'));    
$yuser_query = new WP_user_query(array( \'role\' => \'Editor\'));
$mergedRoles=array_merge($xuser_query->results,$xuser_query->results);

// further on you might want to do some sorting 
// of the resulting array of objects before looping through it:

if (!empty( $mergedRoles->results ) ) {
 foreach ( $mergedRoles->results as $user ) { 
        echo $user->display_name;
      }
 else echo "nada, no users found";

函数中的所有参数get_users 是可选的。如果不指定任何内容，则会得到一个数组，其中包含与当前博客的每个用户对应的对象，包括具有自定义角色的用户。

<?php 
$xuser_query = new WP_user_query(array( \'role\' => \'Author\'));    
$yuser_query = new WP_user_query(array( \'role\' => \'Editor\'));

$mergedRoles=array_merge($xuser_query->results,$xuser_query->results);

// further on you might want to do some sorting 
// of the resulting array of objects before looping through it:

if (!empty( $mergedRoles) ) {

    foreach ( $mergedRoles as $user ) { 
        echo $user->display_name;
    }

} else {
    echo "nada, no users found";
}
?>

嗨，你可以用这个简单的方法

$admins = get_users( array(
    \'role__in\'     => array(\'administrator\', \'editor\', \'author\'),
    \'fields\' => array( \'ID\' ),
) );
$admins_ids = wp_list_pluck( $admins, \'ID\' );

$users = get_users(array(
    \'exclude\' => $admins_ids,
    \'fields\' => array( \'ID\' ),
    ) );
$users_ids = wp_list_pluck( $users, \'ID\' );