add stub file

Author: chobie

ref.php

@@ -0,0 +1,19 @@
+<?php
+
+$ex = new ReflectionExtension("git2");
+$result = array();
+foreach ($ex->getFunctions() as $func) {
+    /** @var ReflectionFunction $func */
+
+    $name = $func->getName();
+    $result[$name] = array();
+    foreach ($func->getParameters() as $param) {
+        /** @var ReflectionParameter $param */
+        $result[$name][] = '$' . $param->getName();
+    }
+}
+
+echo "<?php\n";
+foreach ($result as $func => $params) {
+    printf("function %s(%s){}\n", $func, join(", ", $params));
+}