diff --git a/ext/zlib/tests/zlib_get_coding_type.phpt b/ext/zlib/tests/zlib_get_coding_type.phpt
new file mode 100644
index 0000000000000..deec444c20b29
--- /dev/null
+++ b/ext/zlib/tests/zlib_get_coding_type.phpt
@@ -0,0 +1,13 @@
+--TEST--
+string zlib_get_coding_type ( void );
+--CREDITS--
+marcosptf - <marcosptf@yahoo.com.br> - @phpsp - sao paulo - br
+--SKIPIF--
+if(!extension_loaded('zlib')) die('skip, zlib not loaded');
+?>
+--FILE--
+<?php
+var_dump(zlib_get_coding_type());
+?>
+--EXPECTF--
+bool(%s)