diff --git a/ext/zlib/tests/compress_zlib_wrapper.phpt b/ext/zlib/tests/compress_zlib_wrapper.phpt
new file mode 100644
index 00000000000..0face03c6fe
--- /dev/null
+++ b/ext/zlib/tests/compress_zlib_wrapper.phpt
@@ -0,0 +1,17 @@
+--TEST--
+compress.zlib:// wrapper
+--FILE--
+<?php
+
+// Relative path
+$fp = fopen("compress.zlib://ext/xsl/tests/xslt.xsl.gz", "wb");
+fclose($fp);
+
+// Absolute path
+$fp = fopen("compress.zlib://". dirname(__FILE__). "/../../../ext/xsl/tests/xslt.xsl.gz", "wb");
+fclose($fp);
+
+echo "ok\n";
+?>
+--EXPECT--
+ok