diff --git a/generated/array.php b/generated/array.php
index 5b99c713..ecde0ef6 100644
--- a/generated/array.php
+++ b/generated/array.php
@@ -67,8 +67,8 @@
 function array_multisort(array &$array1, $array1_sort_order = SORT_ASC, $array1_sort_flags = SORT_REGULAR, ...$params): void
 {
     error_clear_last();
-    if ($params !== null) {
-        $result = \array_multisort($array1, $array1_sort_order, $array1_sort_flags, $params);
+    if ($params !== []) {
+        $result = \array_multisort($array1, $array1_sort_order, $array1_sort_flags, ...$params);
     } else {
         $result = \array_multisort($array1, $array1_sort_order, $array1_sort_flags);
     }
diff --git a/generated/funchand.php b/generated/funchand.php
index a6379920..16921886 100644
--- a/generated/funchand.php
+++ b/generated/funchand.php
@@ -62,8 +62,8 @@ function func_get_arg(int $arg_num)
 function register_tick_function(callable $function, $arg = null, ...$params): void
 {
     error_clear_last();
-    if ($params !== null) {
-        $result = \register_tick_function($function, $arg, $params);
+    if ($params !== []) {
+        $result = \register_tick_function($function, $arg, ...$params);
     } elseif ($arg !== null) {
         $result = \register_tick_function($function, $arg);
     } else {
diff --git a/generated/session.php b/generated/session.php
index 5e3184ad..9e84d68a 100644
--- a/generated/session.php
+++ b/generated/session.php
@@ -124,8 +124,8 @@ function session_regenerate_id(bool $delete_old_session = false): void
 function session_register($name, ...$params): void
 {
     error_clear_last();
-    if ($params !== null) {
-        $result = \session_register($name, $params);
+    if ($params !== []) {
+        $result = \session_register($name, ...$params);
     } else {
         $result = \session_register($name);
     }
diff --git a/generated/strings.php b/generated/strings.php
index f6c11ecc..dc5f25ac 100644
--- a/generated/strings.php
+++ b/generated/strings.php
@@ -439,8 +439,8 @@ function metaphone(string $str, int $phonemes = 0): string
 function sprintf(string $format, $args = null, ...$params): string
 {
     error_clear_last();
-    if ($params !== null) {
-        $result = \sprintf($format, $args, $params);
+    if ($params !== []) {
+        $result = \sprintf($format, $args, ...$params);
     } elseif ($args !== null) {
         $result = \sprintf($format, $args);
     } else {
diff --git a/generator/src/WritePhpFunction.php b/generator/src/WritePhpFunction.php
index a9f814a6..d9d8f134 100644
--- a/generator/src/WritePhpFunction.php
+++ b/generator/src/WritePhpFunction.php
@@ -71,8 +71,12 @@ private function writePhpFunction(): string
                 } else {
                     $phpFunction .= '    ';
                 }
-                $defaultValue = $lastParameter->getDefaultValue();
-                $defaultValueToString = ($defaultValue === null) ? 'null' : $defaultValue;
+                if ($lastParameter->isVariadic()) {
+                    $defaultValueToString = '[]';
+                } else {
+                    $defaultValue = $lastParameter->getDefaultValue();
+                    $defaultValueToString = ($defaultValue === null) ? 'null' : $defaultValue;
+                }
                 $phpFunction .= 'if ($'.$lastParameter->getParameter().' !== '.$defaultValueToString.') {'."\n";
                 $phpFunction .= '        $result = '.$this->printFunctionCall($method)."\n";
                 $phpFunction .= '    }';
@@ -161,7 +165,11 @@ private function printFunctionCall(Method $function): string
     {
         $functionCall = '\\'.$function->getFunctionName().'(';
         $functionCall .= implode(', ', \array_map(function (Parameter $parameter) {
-            return '$'.$parameter->getParameter();
+            $str = '';
+            if ($parameter->isVariadic()) {
+                $str = '...';
+            }
+            return $str.'$'.$parameter->getParameter();
         }, $function->getFunctionParam()));
         $functionCall .= ');';
         return $functionCall;