diff --git a/interbase.c b/interbase.c
index d924163..8566fc7 100644
--- a/interbase.c
+++ b/interbase.c
@@ -93,19 +93,19 @@ ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_trans, 0, 0, 0)
 	ZEND_ARG_INFO(0, link_identifier)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_commit, 0, 0, 1)
+ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_commit, 0, 0, 0)
 	ZEND_ARG_INFO(0, link_identifier)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_rollback, 0, 0, 1)
+ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_rollback, 0, 0, 0)
 	ZEND_ARG_INFO(0, link_identifier)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_commit_ret, 0, 0, 1)
+ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_commit_ret, 0, 0, 0)
 	ZEND_ARG_INFO(0, link_identifier)
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_rollback_ret, 0, 0, 1)
+ZEND_BEGIN_ARG_INFO_EX(arginfo_ibase_rollback_ret, 0, 0, 0)
 	ZEND_ARG_INFO(0, link_identifier)
 ZEND_END_ARG_INFO()
 
diff --git a/tests/ibase_commit_001.phpt b/tests/ibase_commit_001.phpt
new file mode 100644
index 0000000..8426ee8
--- /dev/null
+++ b/tests/ibase_commit_001.phpt
@@ -0,0 +1,18 @@
+--TEST--
+ibase_commit(): Make sure the method can be invoked with zero arguments
+--SKIPIF--
+<?php include("skipif.inc"); ?>
+--FILE--
+<?php
+
+require("interbase.inc");
+
+ibase_connect($test_base);
+
+ibase_query('INSERT INTO test1 VALUES (100, 2)');
+
+var_dump(ibase_commit());
+
+?>
+--EXPECTF--
+bool(true)
diff --git a/tests/ibase_commit_ret_001.phpt b/tests/ibase_commit_ret_001.phpt
new file mode 100644
index 0000000..21ba605
--- /dev/null
+++ b/tests/ibase_commit_ret_001.phpt
@@ -0,0 +1,18 @@
+--TEST--
+ibase_commit_ret(): Make sure the method can be invoked with zero arguments
+--SKIPIF--
+<?php include("skipif.inc"); ?>
+--FILE--
+<?php
+
+require("interbase.inc");
+
+ibase_connect($test_base);
+
+ibase_query('INSERT INTO test1 VALUES (100, 2)');
+
+var_dump(ibase_commit_ret());
+
+?>
+--EXPECTF--
+bool(true)
diff --git a/tests/ibase_rollback_002.phpt b/tests/ibase_rollback_002.phpt
new file mode 100644
index 0000000..8783e81
--- /dev/null
+++ b/tests/ibase_rollback_002.phpt
@@ -0,0 +1,18 @@
+--TEST--
+ibase_rollback(): Make sure the method can be invoked with zero arguments
+--SKIPIF--
+<?php include("skipif.inc"); ?>
+--FILE--
+<?php
+
+require("interbase.inc");
+
+ibase_connect($test_base);
+
+ibase_query('INSERT INTO test1 VALUES (100, 2)');
+
+var_dump(ibase_rollback());
+
+?>
+--EXPECTF--
+bool(true)
diff --git a/tests/ibase_rollback_ret_001.phpt b/tests/ibase_rollback_ret_001.phpt
new file mode 100644
index 0000000..7065519
--- /dev/null
+++ b/tests/ibase_rollback_ret_001.phpt
@@ -0,0 +1,18 @@
+--TEST--
+ibase_rollback_ret(): Make sure the method can be invoked with zero arguments
+--SKIPIF--
+<?php include("skipif.inc"); ?>
+--FILE--
+<?php
+
+require("interbase.inc");
+
+ibase_connect($test_base);
+
+ibase_query('INSERT INTO test1 VALUES (100, 2)');
+
+var_dump(ibase_rollback_ret());
+
+?>
+--EXPECTF--
+bool(true)