wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php:583Creates a single user.
$requestWP_REST_RequestWP_REST_Response|WP_Error2 hooks fire while WP_REST_Users_Controller::create_item() runs, in this order:
Fires immediately after a user is created or updated via the REST API.
Fires after a user is completely created or updated via the REST API.
public function create_item( $request ) { if ( ! empty( $request['id'] ) ) { return new WP_Error( 'rest_user_exists', __( 'Cannot create existing user.' ), array( 'status' => 400 ) ); } $schema = $this->get_item_schema(); if ( ! empty( $request['roles'] ) && ! empty( $schema['properties']['roles'] ) ) { $check_permission = $this->check_role_update( $request['id'], $request['roles'] ); if ( is_wp_error( $check_permission ) ) { return $check_permission; } } $user = $this->prepare_item_for_database( $request ); if ( is_multisite() ) { $ret = wpmu_validate_user_signup( $user->user_login, $user->user_email ); if ( is_wp_error( $ret['errors'] ) && $ret['errors']->has_errors() ) { $error = new WP_Error( 'rest_invalid_param', __( 'Invalid user parameter(s).' ), array( 'status' => 400 ) ); foreach ( $ret['errors']->errors as $code => $messages ) { foreach ( $messages as $message ) { $error->add( $code, $message ); } $error_data = $error->get_error_data( $code ); if ( $error_data ) { $error->add_data( $error_data, $code ); } } return $error; } } if ( is_multisite() ) { $user_id = wpmu_create_user( $user->user_login, $user->user_pass, $user->user_email ); if ( ! $user_id ) { return new WP_Error( 'rest_user_create', __( 'Error creating new user.' ), array( 'status' => 500 ) ); } $user->ID = $user_id; $user_id = wp_update_user( wp_slash( (array) $user ) ); if ( is_wp_error( $user_id ) ) { return $user_id; } $result = add_user_to_blog( get_site()->id, $user_id, '' ); if ( is_wp_error( $result ) ) { return $result; } } else { $user_id = wp_insert_user( wp_slash( (array) $user ) ); if ( is_wp_error( $user_id ) ) { return $user_id; } } $user = get_user_by( 'id', $user_id ); /** * Fires immediately after a user is created or updated via the REST API.Introduced in 4.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.