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<?php // Exit if accessed directly if ( ! defined( 'ABSPATH' ) ) exit; function wppb_toolbox_unique_display_name_edit_profile( $message, $field, $request_data, $form_location ) { if ( isset( $request_data['display_name']) ) { if( isset( $_REQUEST['edit_user'] ) && ( ( !is_multisite() && current_user_can( 'edit_users' ) ) || ( is_multisite() && ( current_user_can( 'remove_users' ) || current_user_can( 'manage_options' ) ) ) ) ){ $user = get_userdata( absint( $_REQUEST['edit_user'] ) ); } else if ( isset( $request_data['user_id'] ) ) { $user = get_userdata( $request_data['user_id'] ); } else { $user = wp_get_current_user(); } if ( $request_data['display_name'] == $user->display_name ) return $message; if ( wppb_toolbox_unique_display_name_check( $request_data['display_name'] ) ) { return __('This display name is already in use. Please choose another one.', 'profile-builder'); } } return $message; } add_filter( 'wppb_check_form_field_default-display-name-publicly-as', 'wppb_toolbox_unique_display_name_edit_profile', 20, 4 ); function wppb_toolbox_unique_display_name_register( $display_name ){ if ( isset( $_POST['action'] ) && ( ( $_POST['action'] === 'register' ) || ( isset( $_POST['todo'] ) && $_POST['action'] === 'wppb_handle_email_confirmation_cases' && $_POST['todo'] === 'confirm' ) ) ) { if (isset($display_name)) { if (wppb_toolbox_unique_display_name_check($display_name)) { $i = 1; while (wppb_toolbox_unique_display_name_check($display_name . ' ' . $i)) { $i++; } $display_name = $display_name . ' ' . $i; } } } return $display_name; } add_filter( 'pre_user_display_name', 'wppb_toolbox_unique_display_name_register', 10 ); function wppb_toolbox_unique_display_name_check($display_name ){ global $wpdb; $count = $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(ID) FROM $wpdb->users WHERE display_name = %s", $display_name ) ); if ( $count >= 1 ){ return true; } return false; }