diff --git a/php_systemd.h b/php_systemd.h
index 2e2f2e6..a83da3a 100644
--- a/php_systemd.h
+++ b/php_systemd.h
@@ -4,6 +4,7 @@
 #define PHP_SYSTEMD_EXTNAME "systemd"
 
 PHP_FUNCTION(sd_journal_send);
+PHP_FUNCTION(sd_notify);
 
 extern zend_module_entry systemd_module_entry;
 #define phpext_systemd_ptr &systemd_module_entry
diff --git a/systemd.c b/systemd.c
index 9479556..e925532 100644
--- a/systemd.c
+++ b/systemd.c
@@ -3,10 +3,12 @@
 #endif
 #include "php.h"
 #include "php_systemd.h"
+#include <systemd/sd-daemon.h>
 #include <systemd/sd-journal.h>
 
 zend_function_entry systemd_functions[] = {
     PHP_FE(sd_journal_send, NULL)
+    PHP_FE(sd_notify, NULL)
     {NULL, NULL, NULL} // Sentinel
 };
 
@@ -63,3 +65,17 @@ PHP_FUNCTION(sd_journal_send)
     
     RETURN_TRUE;
 }
+
+PHP_FUNCTION(sd_notify)
+{
+    int unset_environment;
+    char *state;
+    int state_len;
+
+    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ls",
+        &unset_environment, &state, &state_len) != SUCCESS) {
+        RETURN_FALSE;
+    }
+    
+    RETURN_LONG(sd_notify(unset_environment, state));
+}