+if ( !function_exists('get_userdatabylogin') ) :
+/**
+ * Retrieve user info by login name.
+ *
+ * @since 0.71
+ * @deprecated 3.3.0
+ * @deprecated Use get_user_by('login')
+ *
+ * @param string $user_login User's username
+ * @return bool|object False on failure, User DB row object
+ */
+function get_userdatabylogin($user_login) {
+ _deprecated_function( __FUNCTION__, '3.3', "get_user_by('login')" );
+ return get_user_by('login', $user_login);
+}
+endif;
+
+if ( !function_exists('get_user_by_email') ) :
+/**
+ * Retrieve user info by email.
+ *
+ * @since 2.5.0
+ * @deprecated 3.3.0
+ * @deprecated Use get_user_by('email')
+ *
+ * @param string $email User's email address
+ * @return bool|object False on failure, User DB row object
+ */
+function get_user_by_email($email) {
+ _deprecated_function( __FUNCTION__, '3.3', "get_user_by('email')" );
+ return get_user_by('email', $email);
+}
+endif;
+