diff --git a/ext/zlib/tests/bug55544-win.phpt b/ext/zlib/tests/bug55544-win.phpt
index 5c94236a2f21..02a1ac837000 100644
Binary files a/ext/zlib/tests/bug55544-win.phpt and b/ext/zlib/tests/bug55544-win.phpt differ
diff --git a/ext/zlib/tests/func.inc b/ext/zlib/tests/func.inc
deleted file mode 100644
index 73cfc4e06ffc..000000000000
--- a/ext/zlib/tests/func.inc
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php
-
-function get_zlib_version()
-{
-    $version = NULL;
-
-    ob_start();
-    phpinfo();
-    $info = ob_get_contents();
-    ob_end_clean();
-    //if (preg_match(',zlib.*Compiled Version => (\d+\.\d+\.\d+),s', $info, $match)) {
-    //	$version = $match[1];
-    if (preg_match(',zlib(?!.*libXML).*Compiled Version (=> |</).*(\d+\.\d+\.\d+?),sU', $info, $match)) {
-        $version = $match[2];
-    }
-
-    return $version;
-}
diff --git a/ext/zlib/tests/gzencode_variation2-win32.phpt b/ext/zlib/tests/gzencode_variation2-win32.phpt
index 90da12441582..34ec5b3b3669 100644
--- a/ext/zlib/tests/gzencode_variation2-win32.phpt
+++ b/ext/zlib/tests/gzencode_variation2-win32.phpt
@@ -9,11 +9,8 @@ if( substr(PHP_OS, 0, 3) != "WIN" ) {
   die("skip.. only for Windows");
 }
 
-
-
-include 'func.inc';
-if (version_compare(get_zlib_version(), "1.2.11") < 0) {
-    die("skip - at least zlib 1.2.11 required, got " . get_zlib_version());
+if (version_compare(ZLIB_VERSION, "1.2.11") < 0) {
+    die("skip - at least zlib 1.2.11 required, got " . ZLIB_VERSION);
 }
 ?>
 --FILE--
diff --git a/ext/zlib/tests/gzgetc_basic.phpt b/ext/zlib/tests/gzgetc_basic.phpt
index 7164c23098d9..3a2fbe066e91 100644
--- a/ext/zlib/tests/gzgetc_basic.phpt
+++ b/ext/zlib/tests/gzgetc_basic.phpt
@@ -4,9 +4,7 @@ Test function gzgetc() by calling it with its expected arguments zlib 1.2.5
 zlib
 --SKIPIF--
 <?php
-
-include 'func.inc';
-if (version_compare(get_zlib_version(), '1.2.5') > 0) {
+if (version_compare(ZLIB_VERSION, '1.2.5') > 0) {
     die('skip - only for zlib <= 1.2.5');
 }
 ?>
diff --git a/ext/zlib/tests/gzgetc_basic_1.phpt b/ext/zlib/tests/gzgetc_basic_1.phpt
index e70c5814fcbc..91c3a7638574 100644
--- a/ext/zlib/tests/gzgetc_basic_1.phpt
+++ b/ext/zlib/tests/gzgetc_basic_1.phpt
@@ -4,9 +4,7 @@ Test function gzgetc() by calling it with its expected arguments zlib 1.2.7
 zlib
 --SKIPIF--
 <?php
-
-include 'func.inc';
-if (version_compare(get_zlib_version(), '1.2.7') < 0) {
+if (version_compare(ZLIB_VERSION, '1.2.7') < 0) {
     die('skip - only for zlib >= 1.2.7');
 }
 ?>