wp-includes/user.php:681Retrieves user option that can be either per Site or per Network.
$optionstring$userintoptional0$deprecatedstringoptional''mixedOne hook fires while get_user_option() runs, in this order:
Filters a specific user option value.
function get_user_option( $option, $user = 0, $deprecated = '' ) { global $wpdb; if ( ! empty( $deprecated ) ) { _deprecated_argument( __FUNCTION__, '3.0.0' ); } if ( empty( $user ) ) { $user = get_current_user_id(); } $user = get_userdata( $user ); if ( ! $user ) { return false; } $prefix = $wpdb->get_blog_prefix(); if ( $user->has_prop( $prefix . $option ) ) { // Blog-specific. $result = $user->get( $prefix . $option ); } elseif ( $user->has_prop( $option ) ) { // User-specific and cross-blog. $result = $user->get( $option ); } else { $result = false; } /** * Filters a specific user option value. * * The dynamic portion of the hook name, `$option`, refers to the user option name. * * @since 2.5.0 * * @param mixed $result Value for the user's option. * @param string $option Name of the option being retrieved. * @param WP_User $user WP_User object of the user whose option is being retrieved. */ return apply_filters( "get_user_option_{$option}", $result, $option, $user );}Introduced in 2.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/user.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.