get_current_user_id() give you the user id of the logged in user. And that is: you. You have to get all users: <?php $users = get_users(); foreach( $users as $user ) { $udata = get_userdata( $user->ID ); $registered = $udata->user_registered; printf( ‘%s member since %s<br>’, $udata->data->display_name, date( “M Y”, strtotime( $registered ) ) ); }
UPDATE 2018-06-28 While the code below mostly works fine, here is a rewrite of the code for WP >=4.6.0 (using PHP 7): function add_course_section_filter( $which ) { // create sprintf templates for <select> and <option>s $st=”<select name=”course_section_%s” style=”float:none;”><option value=””>%s</option>%s</select>”; $ot=”<option value=”%s” %s>Section %s</option>”; // determine which filter button was clicked, if any and set section … Read more
The other answers are correct, but it’s possible to achive the same thing with less code using wp_list_pluck(): $users = get_users(); $user_names = wp_list_pluck( $users, ‘display_name’ ); wp_list_pluck() used that way will get the display_name field of all the users in an array without needing to do a loop.
This allows plugins to easily hijack the default role while they’re active. // Hijack the option, the role will follow! add_filter(‘pre_option_default_role’, function($default_role){ // You can also add conditional tags here and return whatever return ‘subscriber’; // This is changed return $default_role; // This allows default }); I use it to make sure some plugins that … Read more
According WP database structure, ID in wp_users is Bigint(20) UNSIGNED, so you could “theoretically” add 18446744073709551615 users. http://dev.mysql.com/doc/refman/4.1/en/integer-types.html
The size of the table isn’t really the issue, the queries you’re running on that table might be. For example, if you’re selecting users based on data stored in the user-meta table, then that query will be highly unoptimized, because meta_value is not an indexed field. In which case you may need to add extra … Read more
<?php $current_user = wp_get_current_user(); if ( ! user_can( $current_user, “subscriber” ) ) // Check user object has not got subscriber role echo ‘User is a not Subscriber’; else echo ‘User is a Subscriber’; ?>
Put this in your functions.php file: function wpse_131562_redirect() { if ( ! is_user_logged_in() && (is_woocommerce() || is_cart() || is_checkout()) ) { // feel free to customize the following line to suit your needs wp_redirect(home_url()); exit; } } add_action(‘template_redirect’, ‘wpse_131562_redirect’); What does it do? We check if a not-logged-in user wants to see a WooCommerce page, … Read more
As far as I’m aware, all you can do is filter the display name via pre_user_display_name and check if it already exists. Unfortunately WP_User_Query doesn’t support querying by display_name, so we also have to add to the WHERE clause via pre_user_query. Additionally, there is no elegant way I can think of to handle the case … Read more
You can use spaces in usernames, no problem. Several users on wordpress.org have spaces in their usernames. Strict mode only allows these characters: a-z0-9<space>_.\-@ However WP doesn’t default to strict mode. Now, multisite has different restrictions, and it may strip spaces there. This is because usernames are used to create independent blogs and such on … Read more