-function the_author_meta($field = '', $user_id = false) {
- echo apply_filters('the_author_' . $field, get_the_author_meta($field, $user_id), $user_id);
+function the_author_meta( $field = '', $user_id = false ) {
+ $author_meta = get_the_author_meta( $field, $user_id );
+
+ /**
+ * The value of the requested user metadata.
+ *
+ * The filter name is dynamic and depends on the $field parameter of the function.
+ *
+ * @since 2.8.0
+ *
+ * @param string $author_meta The value of the metadata.
+ * @param int $user_id The user ID.
+ */
+ echo apply_filters( 'the_author_' . $field, $author_meta, $user_id );