From 065b4ec1255affac290473f8980a24092f4e3324 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Wed, 23 Aug 2023 18:42:17 -0400
Subject: [PATCH] ext/gd/tests: backport optional PNG support

- Three of our gd tests could be skipped with a message about requiring
bundled GD, but those tests don't actually require bundled GD. We
update the messages to mention the specific functions that are
required.

- add SKIPIF stanzas for missing PNG support

The bundled libgd always has PNG support, but an external one may not.

- imagerotate() is always available

Following 59ec80c5, the imagerotate() function is always available. We
may therefore remove its function_exists() checks without harm.

close GH-17894
---
 ext/gd/tests/bug22544-mb.phpt                    | 6 ++++++
 ext/gd/tests/bug22544.phpt                       | 6 ++++++
 ext/gd/tests/bug24155.phpt                       | 4 +++-
 ext/gd/tests/bug27582_1.phpt                     | 6 ++++++
 ext/gd/tests/bug39366.phpt                       | 4 ----
 ext/gd/tests/bug39780_extern.phpt                | 3 +++
 ext/gd/tests/bug43073.phpt                       | 3 +++
 ext/gd/tests/bug43475.phpt                       | 3 +++
 ext/gd/tests/bug43828.phpt                       | 3 +++
 ext/gd/tests/bug45799.phpt                       | 6 ++++++
 ext/gd/tests/bug47946.phpt                       | 3 +++
 ext/gd/tests/bug48732-mb.phpt                    | 3 +++
 ext/gd/tests/bug48732.phpt                       | 4 ++++
 ext/gd/tests/bug50194.phpt                       | 4 +++-
 ext/gd/tests/bug51498.phpt                       | 3 +++
 ext/gd/tests/bug52070.phpt                       | 6 ++++++
 ext/gd/tests/bug53504.phpt                       | 3 +++
 ext/gd/tests/bug64641.phpt                       | 3 +++
 ext/gd/tests/bug66005.phpt                       | 6 ++++++
 ext/gd/tests/bug72482_2.phpt                     | 6 ++++++
 ext/gd/tests/bug72604.phpt                       | 6 ++++++
 ext/gd/tests/bug72913.phpt                       | 6 ++++++
 ext/gd/tests/bug73213.phpt                       | 6 ++++++
 ext/gd/tests/bug73272.phpt                       | 6 ++++++
 ext/gd/tests/bug73549.phpt                       | 6 ++++++
 ext/gd/tests/bug73614.phpt                       | 3 +++
 ext/gd/tests/bug74031.phpt                       | 6 ++++++
 ext/gd/tests/bug75124.phpt                       | 3 +++
 ext/gd/tests/bug77943.phpt                       | 6 ++++++
 ext/gd/tests/bug79945.phpt                       | 3 +++
 ext/gd/tests/imagearc_basic.phpt                 | 6 ++++++
 ext/gd/tests/imagearc_variation1.phpt            | 6 ++++++
 ext/gd/tests/imagearc_variation2.phpt            | 6 ++++++
 ext/gd/tests/imagechar_basic.phpt                | 6 ++++++
 ext/gd/tests/imagecharup_basic.phpt              | 6 ++++++
 ext/gd/tests/imagecolorallocatealpha_basic.phpt  | 3 +++
 ext/gd/tests/imagecolorset_basic.phpt            | 6 ++++++
 ext/gd/tests/imageconvolution_basic.phpt         | 6 ++++++
 ext/gd/tests/imagecopyresampled_basic.phpt       | 6 ++++++
 ext/gd/tests/imagecreatefrombmp_basic.phpt       | 3 +++
 ext/gd/tests/imagecreatefromstring_bmp.phpt      | 3 +++
 ext/gd/tests/imagecreatefromtga_basic.phpt       | 3 +++
 ext/gd/tests/imagecreatefromtga_variation.phpt   | 3 +++
 ext/gd/tests/imagecreatetruecolor_basic.phpt     | 3 +++
 ext/gd/tests/imagecrop_auto.phpt                 | 3 +++
 ext/gd/tests/imagedashedline_basic.phpt          | 3 +++
 ext/gd/tests/imageellipse_basic.phpt             | 6 ++++++
 ext/gd/tests/imagefilledarc_basic.phpt           | 3 +++
 ext/gd/tests/imagefilledarc_variation1.phpt      | 3 +++
 ext/gd/tests/imagefilledarc_variation2.phpt      | 3 +++
 ext/gd/tests/imagefilledellipse_basic.phpt       | 6 ++++++
 ext/gd/tests/imagefilledpolygon_basic.phpt       | 3 +++
 ext/gd/tests/imagefilltoborder_basic.phpt        | 6 ++++++
 ext/gd/tests/imagefilter.phpt                    | 5 ++++-
 ext/gd/tests/imagegammacorrect_basic.phpt        | 3 +++
 ext/gd/tests/imagegammacorrect_variation1.phpt   | 3 +++
 ext/gd/tests/imagegammacorrect_variation2.phpt   | 6 ++++++
 ext/gd/tests/imageopenpolygon_basic.phpt         | 6 ++++++
 ext/gd/tests/imagepolygon_aa.phpt                | 6 ++++++
 ext/gd/tests/imagepolygon_basic.phpt             | 3 +++
 ext/gd/tests/imagerectangle_basic.phpt           | 6 ++++++
 ext/gd/tests/imageresolution_png.phpt            | 6 ++++++
 ext/gd/tests/imagerotate_overflow.phpt           | 6 ------
 ext/gd/tests/imagesetbrush_basic.phpt            | 6 ++++++
 ext/gd/tests/imagesetthickness_basic.phpt        | 3 +++
 ext/gd/tests/imagestring_basic.phpt              | 6 ++++++
 ext/gd/tests/imagestringup_basic.phpt            | 6 ++++++
 ext/gd/tests/imagetruecolortopalette_basic.phpt  | 3 +++
 ext/gd/tests/libgd00086_extern.phpt              | 3 +++
 ext/gd/tests/test_image_equals_file_palette.phpt | 6 ++++++
 70 files changed, 308 insertions(+), 13 deletions(-)

diff --git a/ext/gd/tests/bug22544-mb.phpt b/ext/gd/tests/bug22544-mb.phpt
index b67478e558c..f99307df121 100644
--- a/ext/gd/tests/bug22544-mb.phpt
+++ b/ext/gd/tests/bug22544-mb.phpt
@@ -2,6 +2,12 @@
 Bug #22544 (TrueColor transparency in PNG images).
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
     $image = imageCreateTruecolor(640, 100);
diff --git a/ext/gd/tests/bug22544.phpt b/ext/gd/tests/bug22544.phpt
index 1fba04d9373..28fc6bdfbb0 100644
--- a/ext/gd/tests/bug22544.phpt
+++ b/ext/gd/tests/bug22544.phpt
@@ -2,6 +2,12 @@
 Bug #22544 (TrueColor transparency in PNG images).
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
     $image = imageCreateTruecolor(640, 100);
diff --git a/ext/gd/tests/bug24155.phpt b/ext/gd/tests/bug24155.phpt
index 42c5e3d7926..c93c3bbbcb5 100644
--- a/ext/gd/tests/bug24155.phpt
+++ b/ext/gd/tests/bug24155.phpt
@@ -4,7 +4,9 @@ Bug #24155 (gdImageRotate270 rotation problem).
 gd
 --SKIPIF--
 <?php
-    if (!function_exists("imagerotate")) die("skip requires bundled GD library\n");
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug27582_1.phpt b/ext/gd/tests/bug27582_1.phpt
index 2604c5fcaa9..1f15474f50d 100644
--- a/ext/gd/tests/bug27582_1.phpt
+++ b/ext/gd/tests/bug27582_1.phpt
@@ -2,6 +2,12 @@
 Bug #27582 (ImageFillToBorder() on alphablending image looses alpha on fill color)
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $dest = dirname(realpath(__FILE__)) . '/bug27582.png';
diff --git a/ext/gd/tests/bug39366.phpt b/ext/gd/tests/bug39366.phpt
index 2fedbcef43d..3c8b0130a41 100644
--- a/ext/gd/tests/bug39366.phpt
+++ b/ext/gd/tests/bug39366.phpt
@@ -2,10 +2,6 @@
 Bug #39366 (imagerotate does not respect alpha with angles>45)
 --EXTENSIONS--
 gd
---SKIPIF--
-<?php
-    if (!function_exists("imagerotate")) die("skip requires bundled GD library\n");
-?>
 --FILE--
 <?php
 
diff --git a/ext/gd/tests/bug39780_extern.phpt b/ext/gd/tests/bug39780_extern.phpt
index 2330bd65e57..438816fe22c 100644
--- a/ext/gd/tests/bug39780_extern.phpt
+++ b/ext/gd/tests/bug39780_extern.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
     if (GD_BUNDLED) die("skip requires extern GD\n");
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug43073.phpt b/ext/gd/tests/bug43073.phpt
index 5c54d8770f8..80c6480fea5 100644
--- a/ext/gd/tests/bug43073.phpt
+++ b/ext/gd/tests/bug43073.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
     if(!function_exists('imagettftext')) die('skip imagettftext() not available');
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug43475.phpt b/ext/gd/tests/bug43475.phpt
index 8944b57e3cd..454d2daad0f 100644
--- a/ext/gd/tests/bug43475.phpt
+++ b/ext/gd/tests/bug43475.phpt
@@ -7,6 +7,9 @@ gd
     if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
         die("skip test requires GD 2.2.2 or higher");
     }
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug43828.phpt b/ext/gd/tests/bug43828.phpt
index 8a0caf5decc..8bc3f9bbcaf 100644
--- a/ext/gd/tests/bug43828.phpt
+++ b/ext/gd/tests/bug43828.phpt
@@ -7,6 +7,9 @@ gd
 if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
     die("skip test requires GD 2.2.2 or higher");
 }
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug45799.phpt b/ext/gd/tests/bug45799.phpt
index 8576b4d0078..f7124ce5b97 100644
--- a/ext/gd/tests/bug45799.phpt
+++ b/ext/gd/tests/bug45799.phpt
@@ -2,6 +2,12 @@
 Bug #45799 (imagepng() crashes on empty image).
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $img = imagecreate(500,500);
diff --git a/ext/gd/tests/bug47946.phpt b/ext/gd/tests/bug47946.phpt
index 39e5aef9edf..a8730056832 100644
--- a/ext/gd/tests/bug47946.phpt
+++ b/ext/gd/tests/bug47946.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
 if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.5', '<=')) die('skip upstream fix not yet released');
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug48732-mb.phpt b/ext/gd/tests/bug48732-mb.phpt
index 13a881254c2..361c1ac4d88 100644
--- a/ext/gd/tests/bug48732-mb.phpt
+++ b/ext/gd/tests/bug48732-mb.phpt
@@ -6,6 +6,9 @@ gd
 <?php
     if(!function_exists('imagefttext')) die('skip imagefttext() not available');
     if (substr(PHP_OS, 0, 3) == 'WIN') die('skip UTF-8 font file names not yet supported on Windows');
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug48732.phpt b/ext/gd/tests/bug48732.phpt
index 44e4204503e..ed73954de33 100644
--- a/ext/gd/tests/bug48732.phpt
+++ b/ext/gd/tests/bug48732.phpt
@@ -2,9 +2,13 @@
 Bug #48732 (TTF Bounding box wrong for letters below baseline)
 --EXTENSIONS--
 gd
+
 --SKIPIF--
 <?php
     if(!function_exists('imagefttext')) die('skip imagefttext() not available');
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug50194.phpt b/ext/gd/tests/bug50194.phpt
index 2addfe0e832..33d2400c46e 100644
--- a/ext/gd/tests/bug50194.phpt
+++ b/ext/gd/tests/bug50194.phpt
@@ -5,7 +5,9 @@ gd
 --SKIPIF--
 <?php
 if (!function_exists('imagettftext')) die('skip imagettftext() not available');
-//die('skip freetype issues');
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug51498.phpt b/ext/gd/tests/bug51498.phpt
index 80844437652..756ba1f71dc 100644
--- a/ext/gd/tests/bug51498.phpt
+++ b/ext/gd/tests/bug51498.phpt
@@ -7,6 +7,9 @@ gd
 if (!GD_BUNDLED && version_compare(GD_VERSION, "2.3.0") < 0) {
     die("skip test requires GD 2.3.0 or higher");
 }
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug52070.phpt b/ext/gd/tests/bug52070.phpt
index 1ba28affdbf..6bbe2363a65 100644
--- a/ext/gd/tests/bug52070.phpt
+++ b/ext/gd/tests/bug52070.phpt
@@ -2,6 +2,12 @@
 Bug #52070 (imagedashedline() - dashed line sometimes is not visible)
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $im = imagecreate(1200, 800);
diff --git a/ext/gd/tests/bug53504.phpt b/ext/gd/tests/bug53504.phpt
index bb74497af05..5bd81f35aa0 100644
--- a/ext/gd/tests/bug53504.phpt
+++ b/ext/gd/tests/bug53504.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
     if(!function_exists('imageftbbox')) die('skip imageftbbox() not available');
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug64641.phpt b/ext/gd/tests/bug64641.phpt
index d300bd8fc6a..edfebee99c9 100644
--- a/ext/gd/tests/bug64641.phpt
+++ b/ext/gd/tests/bug64641.phpt
@@ -7,6 +7,9 @@ gd
 if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
     die("skip test requires GD 2.2.2 or higher");
 }
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug66005.phpt b/ext/gd/tests/bug66005.phpt
index 78e0f481dab..3f3b421b885 100644
--- a/ext/gd/tests/bug66005.phpt
+++ b/ext/gd/tests/bug66005.phpt
@@ -2,6 +2,12 @@
 Bug #66005 (imagecopy does not support 1bit transparency on truecolor images)
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $dest = imagecreatetruecolor(150, 50);
diff --git a/ext/gd/tests/bug72482_2.phpt b/ext/gd/tests/bug72482_2.phpt
index 89f5bb28a77..0583fa4dedd 100644
--- a/ext/gd/tests/bug72482_2.phpt
+++ b/ext/gd/tests/bug72482_2.phpt
@@ -2,6 +2,12 @@
 Bug 72482 (Ilegal write/read access caused by gdImageAALine overflow)
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 require_once __DIR__ . DIRECTORY_SEPARATOR . 'func.inc';
diff --git a/ext/gd/tests/bug72604.phpt b/ext/gd/tests/bug72604.phpt
index 706d7891c32..a7d24e78dfe 100644
--- a/ext/gd/tests/bug72604.phpt
+++ b/ext/gd/tests/bug72604.phpt
@@ -2,6 +2,12 @@
 Bug #72604 (imagearc() ignores thickness for full arcs)
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $im = imagecreatetruecolor(100, 100);
diff --git a/ext/gd/tests/bug72913.phpt b/ext/gd/tests/bug72913.phpt
index c3a7e9f9f56..9eb9c246535 100644
--- a/ext/gd/tests/bug72913.phpt
+++ b/ext/gd/tests/bug72913.phpt
@@ -2,6 +2,12 @@
 Bug #72913 (imagecopy() loses single-color transparency on palette images)
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $base64 = 'iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAIAAACRXR/mAAAABnRSTlMAAAAAAABu'
diff --git a/ext/gd/tests/bug73213.phpt b/ext/gd/tests/bug73213.phpt
index c4c4bd6feea..47fe8043135 100644
--- a/ext/gd/tests/bug73213.phpt
+++ b/ext/gd/tests/bug73213.phpt
@@ -2,6 +2,12 @@
 Bug #73213 (Integer overflow in imageline() with antialiasing)
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 require_once __DIR__ . DIRECTORY_SEPARATOR . 'func.inc';
diff --git a/ext/gd/tests/bug73272.phpt b/ext/gd/tests/bug73272.phpt
index cf10eb227ae..0f0920b2687 100644
--- a/ext/gd/tests/bug73272.phpt
+++ b/ext/gd/tests/bug73272.phpt
@@ -2,6 +2,12 @@
 Bug #73272 (imagescale() is not affected by, but affects imagesetinterpolation())
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 require_once __DIR__ . DIRECTORY_SEPARATOR . 'func.inc';
diff --git a/ext/gd/tests/bug73549.phpt b/ext/gd/tests/bug73549.phpt
index d25941dd565..26a7474b7d5 100644
--- a/ext/gd/tests/bug73549.phpt
+++ b/ext/gd/tests/bug73549.phpt
@@ -2,6 +2,12 @@
 Bug #73549 (Use after free when stream is passed to imagepng)
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $stream = fopen(__DIR__ . DIRECTORY_SEPARATOR . 'bug73549.png', 'w');
diff --git a/ext/gd/tests/bug73614.phpt b/ext/gd/tests/bug73614.phpt
index def4d374211..e1261643f71 100644
--- a/ext/gd/tests/bug73614.phpt
+++ b/ext/gd/tests/bug73614.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
 if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.5', '<=')) die('skip upstream bugfix not yet released');
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug74031.phpt b/ext/gd/tests/bug74031.phpt
index b4efa6b749e..6dfb351fcff 100644
--- a/ext/gd/tests/bug74031.phpt
+++ b/ext/gd/tests/bug74031.phpt
@@ -2,6 +2,12 @@
 (Bug #74031) ReflectionFunction for imagepng returns wrong number of parameters
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 
diff --git a/ext/gd/tests/bug75124.phpt b/ext/gd/tests/bug75124.phpt
index 47b36157fec..26e44f1d6a0 100644
--- a/ext/gd/tests/bug75124.phpt
+++ b/ext/gd/tests/bug75124.phpt
@@ -7,6 +7,9 @@ gd
 if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.5', '<')) {
     die('skip only for bundled libgd or external libgd >= 2.2.5');
 }
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/bug77943.phpt b/ext/gd/tests/bug77943.phpt
index 8ed4114128f..d7d71ceca84 100644
--- a/ext/gd/tests/bug77943.phpt
+++ b/ext/gd/tests/bug77943.phpt
@@ -2,6 +2,12 @@
 Bug #77943 (imageantialias($image, false); does not work)
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 require_once __DIR__ . '/func.inc';
diff --git a/ext/gd/tests/bug79945.phpt b/ext/gd/tests/bug79945.phpt
index b985ddd48be..5db958e36d3 100644
--- a/ext/gd/tests/bug79945.phpt
+++ b/ext/gd/tests/bug79945.phpt
@@ -4,6 +4,9 @@ Bug #79945 (using php wrappers in imagecreatefrompng causes segmentation fault)
 gd
 --SKIPIF--
 <?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 set_error_handler(function($errno, $errstr) {
     if (str_contains($errstr, 'Cannot cast a filtered stream on this system')) {
         die('skip: fopencookie not support on this system');
diff --git a/ext/gd/tests/imagearc_basic.phpt b/ext/gd/tests/imagearc_basic.phpt
index be80f6c5f23..339ea0b79d1 100644
--- a/ext/gd/tests/imagearc_basic.phpt
+++ b/ext/gd/tests/imagearc_basic.phpt
@@ -5,6 +5,12 @@ Edgar Ferreira da Silva <contato [at] edgarfs [dot] com [dot] br>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 
diff --git a/ext/gd/tests/imagearc_variation1.phpt b/ext/gd/tests/imagearc_variation1.phpt
index 89719aa60b4..bf20c74f0ce 100644
--- a/ext/gd/tests/imagearc_variation1.phpt
+++ b/ext/gd/tests/imagearc_variation1.phpt
@@ -5,6 +5,12 @@ Edgar Ferreira da Silva <contato [at] edgarfs [dot] com [dot] br>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 
diff --git a/ext/gd/tests/imagearc_variation2.phpt b/ext/gd/tests/imagearc_variation2.phpt
index 4597cf3a8ff..c23bca840bf 100644
--- a/ext/gd/tests/imagearc_variation2.phpt
+++ b/ext/gd/tests/imagearc_variation2.phpt
@@ -5,6 +5,12 @@ Edgar Ferreira da Silva <contato [at] edgarfs [dot] com [dot] br>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 
diff --git a/ext/gd/tests/imagechar_basic.phpt b/ext/gd/tests/imagechar_basic.phpt
index 3195eb82d4d..649dcccc2de 100644
--- a/ext/gd/tests/imagechar_basic.phpt
+++ b/ext/gd/tests/imagechar_basic.phpt
@@ -5,6 +5,12 @@ Rafael Dohms <rdohms [at] gmail [dot] com>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $image = imagecreatetruecolor(180, 30);
diff --git a/ext/gd/tests/imagecharup_basic.phpt b/ext/gd/tests/imagecharup_basic.phpt
index 82bc18d6ad6..7ebbb8fce9a 100644
--- a/ext/gd/tests/imagecharup_basic.phpt
+++ b/ext/gd/tests/imagecharup_basic.phpt
@@ -5,6 +5,12 @@ Rafael Dohms <rdohms [at] gmail [dot] com>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $image = imagecreatetruecolor(180, 30);
diff --git a/ext/gd/tests/imagecolorallocatealpha_basic.phpt b/ext/gd/tests/imagecolorallocatealpha_basic.phpt
index cc02aaed0d8..24ac882d550 100644
--- a/ext/gd/tests/imagecolorallocatealpha_basic.phpt
+++ b/ext/gd/tests/imagecolorallocatealpha_basic.phpt
@@ -9,6 +9,9 @@ gd
     if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
         die("skip test requires GD 2.2.2 or higher");
     }
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagecolorset_basic.phpt b/ext/gd/tests/imagecolorset_basic.phpt
index cb9b3683aa8..5ed9a1ab860 100644
--- a/ext/gd/tests/imagecolorset_basic.phpt
+++ b/ext/gd/tests/imagecolorset_basic.phpt
@@ -5,6 +5,12 @@ Erick Belluci Tedeschi <erickbt86 [at] gmail [dot] com>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 // Create a 300x100 image
diff --git a/ext/gd/tests/imageconvolution_basic.phpt b/ext/gd/tests/imageconvolution_basic.phpt
index aa834788499..d8204e2d7eb 100644
--- a/ext/gd/tests/imageconvolution_basic.phpt
+++ b/ext/gd/tests/imageconvolution_basic.phpt
@@ -5,6 +5,12 @@ Guilherme Blanco <guilhermeblanco [at] hotmail [dot] com>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $image = imagecreatetruecolor(180, 30);
diff --git a/ext/gd/tests/imagecopyresampled_basic.phpt b/ext/gd/tests/imagecopyresampled_basic.phpt
index a3200b35378..9fb1178e540 100644
--- a/ext/gd/tests/imagecopyresampled_basic.phpt
+++ b/ext/gd/tests/imagecopyresampled_basic.phpt
@@ -2,6 +2,12 @@
 imagecopyresampled()
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 
diff --git a/ext/gd/tests/imagecreatefrombmp_basic.phpt b/ext/gd/tests/imagecreatefrombmp_basic.phpt
index 51eb22c71ad..4989e617b47 100644
--- a/ext/gd/tests/imagecreatefrombmp_basic.phpt
+++ b/ext/gd/tests/imagecreatefrombmp_basic.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
 if (!(imagetypes() & IMG_BMP)) die('skip BMP support required');
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagecreatefromstring_bmp.phpt b/ext/gd/tests/imagecreatefromstring_bmp.phpt
index 8f9e1dd675b..34db04297e3 100644
--- a/ext/gd/tests/imagecreatefromstring_bmp.phpt
+++ b/ext/gd/tests/imagecreatefromstring_bmp.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
 if (!(imagetypes() & IMG_BMP)) die('skip BMP support required');
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagecreatefromtga_basic.phpt b/ext/gd/tests/imagecreatefromtga_basic.phpt
index 25f034878b0..c66f66efbd6 100644
--- a/ext/gd/tests/imagecreatefromtga_basic.phpt
+++ b/ext/gd/tests/imagecreatefromtga_basic.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
 if (!(imagetypes() & IMG_TGA)) die('skip TGA support required');
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagecreatefromtga_variation.phpt b/ext/gd/tests/imagecreatefromtga_variation.phpt
index 0948f978f2f..be9c7977bd6 100644
--- a/ext/gd/tests/imagecreatefromtga_variation.phpt
+++ b/ext/gd/tests/imagecreatefromtga_variation.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
 if (!(imagetypes() & IMG_TGA)) die('skip TGA support required');
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagecreatetruecolor_basic.phpt b/ext/gd/tests/imagecreatetruecolor_basic.phpt
index 5af8a0a1a32..2e8a1ef983b 100644
--- a/ext/gd/tests/imagecreatetruecolor_basic.phpt
+++ b/ext/gd/tests/imagecreatetruecolor_basic.phpt
@@ -7,6 +7,9 @@ gd
 --SKIPIF--
 <?php
     if (!function_exists("imagecreatetruecolor")) die("skip GD Version not compatible");
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagecrop_auto.phpt b/ext/gd/tests/imagecrop_auto.phpt
index 5d3d50b3ef3..5ed8e446a7f 100644
--- a/ext/gd/tests/imagecrop_auto.phpt
+++ b/ext/gd/tests/imagecrop_auto.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
 if (!function_exists('imagecrop')) die( 'skip GD imagecropauto not present; skipping test' );
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagedashedline_basic.phpt b/ext/gd/tests/imagedashedline_basic.phpt
index b36ffbfc6f5..d9ca69ad5f0 100644
--- a/ext/gd/tests/imagedashedline_basic.phpt
+++ b/ext/gd/tests/imagedashedline_basic.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
     if (!function_exists('imagedashedline')) die('skip imagedashedline() not available');
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imageellipse_basic.phpt b/ext/gd/tests/imageellipse_basic.phpt
index 0c86e7cfcb8..da1e0e99260 100644
--- a/ext/gd/tests/imageellipse_basic.phpt
+++ b/ext/gd/tests/imageellipse_basic.phpt
@@ -5,6 +5,12 @@ Ivan Rosolen <contato [at] ivanrosolen [dot] com>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 
diff --git a/ext/gd/tests/imagefilledarc_basic.phpt b/ext/gd/tests/imagefilledarc_basic.phpt
index f3b8c7ac8e8..006ed4aaa23 100644
--- a/ext/gd/tests/imagefilledarc_basic.phpt
+++ b/ext/gd/tests/imagefilledarc_basic.phpt
@@ -10,6 +10,9 @@ gd
 if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
     die("skip test requires GD 2.2.2 or higher");
 }
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagefilledarc_variation1.phpt b/ext/gd/tests/imagefilledarc_variation1.phpt
index d25d2afc879..d00c9b6c0be 100644
--- a/ext/gd/tests/imagefilledarc_variation1.phpt
+++ b/ext/gd/tests/imagefilledarc_variation1.phpt
@@ -10,6 +10,9 @@ gd
 if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
     die("skip test requires GD 2.2.2 or higher");
 }
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagefilledarc_variation2.phpt b/ext/gd/tests/imagefilledarc_variation2.phpt
index fb4675ec5dd..61157a01731 100644
--- a/ext/gd/tests/imagefilledarc_variation2.phpt
+++ b/ext/gd/tests/imagefilledarc_variation2.phpt
@@ -10,6 +10,9 @@ gd
 if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
     die("skip test requires GD 2.2.2 or higher");
 }
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagefilledellipse_basic.phpt b/ext/gd/tests/imagefilledellipse_basic.phpt
index 19a94b1200e..a494b15c28e 100644
--- a/ext/gd/tests/imagefilledellipse_basic.phpt
+++ b/ext/gd/tests/imagefilledellipse_basic.phpt
@@ -2,6 +2,12 @@
 Testing imagefilledellipse() of GD library
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 
diff --git a/ext/gd/tests/imagefilledpolygon_basic.phpt b/ext/gd/tests/imagefilledpolygon_basic.phpt
index 6cba5238d32..bbb8f9c2eb0 100644
--- a/ext/gd/tests/imagefilledpolygon_basic.phpt
+++ b/ext/gd/tests/imagefilledpolygon_basic.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
     if (!function_exists('imagefilledpolygon')) die('skip imagefilledpolygon() not available');
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagefilltoborder_basic.phpt b/ext/gd/tests/imagefilltoborder_basic.phpt
index 7e79ea47b46..f8ebe86bb2c 100644
--- a/ext/gd/tests/imagefilltoborder_basic.phpt
+++ b/ext/gd/tests/imagefilltoborder_basic.phpt
@@ -5,6 +5,12 @@ Ivan Rosolen <contato [at] ivanrosolen [dot] com>
 #testfest PHPSP on 2009-06-30
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 // Create a image
diff --git a/ext/gd/tests/imagefilter.phpt b/ext/gd/tests/imagefilter.phpt
index 156f465da60..c8cf182d9d4 100644
--- a/ext/gd/tests/imagefilter.phpt
+++ b/ext/gd/tests/imagefilter.phpt
@@ -4,7 +4,10 @@ imagefilter() function test
 gd
 --SKIPIF--
 <?php
-    if (!function_exists("imagefilter")) die("skip requires bundled GD library\n");
+    if (!function_exists("imagefilter")) die("skip requires imagefilter function");
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagegammacorrect_basic.phpt b/ext/gd/tests/imagegammacorrect_basic.phpt
index 67b2a36a165..4f52309c825 100644
--- a/ext/gd/tests/imagegammacorrect_basic.phpt
+++ b/ext/gd/tests/imagegammacorrect_basic.phpt
@@ -10,6 +10,9 @@ gd
     if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
         die("skip test requires GD 2.2.2 or higher");
     }
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagegammacorrect_variation1.phpt b/ext/gd/tests/imagegammacorrect_variation1.phpt
index 1c41a257b9e..55370aa49cf 100644
--- a/ext/gd/tests/imagegammacorrect_variation1.phpt
+++ b/ext/gd/tests/imagegammacorrect_variation1.phpt
@@ -10,6 +10,9 @@ gd
     if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
         die("skip test requires GD 2.2.2 or higher");
     }
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagegammacorrect_variation2.phpt b/ext/gd/tests/imagegammacorrect_variation2.phpt
index c75c728296b..33c89d205a1 100644
--- a/ext/gd/tests/imagegammacorrect_variation2.phpt
+++ b/ext/gd/tests/imagegammacorrect_variation2.phpt
@@ -2,6 +2,12 @@
 Apply imagegammacorrect() to a step wedge
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 require __DIR__ . DIRECTORY_SEPARATOR . 'func.inc';
diff --git a/ext/gd/tests/imageopenpolygon_basic.phpt b/ext/gd/tests/imageopenpolygon_basic.phpt
index 6ed6d63a5ac..ed8d3b698d1 100644
--- a/ext/gd/tests/imageopenpolygon_basic.phpt
+++ b/ext/gd/tests/imageopenpolygon_basic.phpt
@@ -2,6 +2,12 @@
 imageopenpolygon(): basic test
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 require_once __DIR__ . DIRECTORY_SEPARATOR . 'func.inc';
diff --git a/ext/gd/tests/imagepolygon_aa.phpt b/ext/gd/tests/imagepolygon_aa.phpt
index 77fef3beed9..a0fded6e5e0 100644
--- a/ext/gd/tests/imagepolygon_aa.phpt
+++ b/ext/gd/tests/imagepolygon_aa.phpt
@@ -2,6 +2,12 @@
 antialiased imagepolygon()
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 require_once __DIR__ . DIRECTORY_SEPARATOR . 'func.inc';
diff --git a/ext/gd/tests/imagepolygon_basic.phpt b/ext/gd/tests/imagepolygon_basic.phpt
index 4d17b30eacf..c41b0710ef4 100644
--- a/ext/gd/tests/imagepolygon_basic.phpt
+++ b/ext/gd/tests/imagepolygon_basic.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
     if (!function_exists('imagepolygon')) die('skip imagepolygon() not available');
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagerectangle_basic.phpt b/ext/gd/tests/imagerectangle_basic.phpt
index d71c44156f9..a40b130cba7 100644
--- a/ext/gd/tests/imagerectangle_basic.phpt
+++ b/ext/gd/tests/imagerectangle_basic.phpt
@@ -5,6 +5,12 @@ Ivan Rosolen <contato [at] ivanrosolen [dot] com>
 #testfest PHPSP on 2009-06-30
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 // Create a image
diff --git a/ext/gd/tests/imageresolution_png.phpt b/ext/gd/tests/imageresolution_png.phpt
index a72f351a156..13f51cd8f3a 100644
--- a/ext/gd/tests/imageresolution_png.phpt
+++ b/ext/gd/tests/imageresolution_png.phpt
@@ -2,6 +2,12 @@
 Set and get image resolution of PNG images
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $filename = __DIR__ . DIRECTORY_SEPARATOR . 'imageresolution_png.png';
diff --git a/ext/gd/tests/imagerotate_overflow.phpt b/ext/gd/tests/imagerotate_overflow.phpt
index 29cc89c1c56..a7be335ca92 100644
--- a/ext/gd/tests/imagerotate_overflow.phpt
+++ b/ext/gd/tests/imagerotate_overflow.phpt
@@ -2,12 +2,6 @@
 imagerotate() overflow with negative numbers
 --EXTENSIONS--
 gd
---SKIPIF--
-<?php
-    if (!function_exists('imagerotate')) {
-        die("skip imagerotate() not available.");
-    }
-?>
 --FILE--
 <?php
 
diff --git a/ext/gd/tests/imagesetbrush_basic.phpt b/ext/gd/tests/imagesetbrush_basic.phpt
index be8a3d33e4a..5142e3690b8 100644
--- a/ext/gd/tests/imagesetbrush_basic.phpt
+++ b/ext/gd/tests/imagesetbrush_basic.phpt
@@ -5,6 +5,12 @@ Erick Belluci Tedeschi <erickbt86 [at] gmail [dot] com>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 // Create the brush image
diff --git a/ext/gd/tests/imagesetthickness_basic.phpt b/ext/gd/tests/imagesetthickness_basic.phpt
index 88f7803dcf6..745dfcf905b 100644
--- a/ext/gd/tests/imagesetthickness_basic.phpt
+++ b/ext/gd/tests/imagesetthickness_basic.phpt
@@ -7,6 +7,9 @@ gd
 --SKIPIF--
 <?php
     if (!function_exists("imagecreatetruecolor")) die("skip GD Version not compatible");
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/imagestring_basic.phpt b/ext/gd/tests/imagestring_basic.phpt
index 1a71ba173c8..8a8e247eb07 100644
--- a/ext/gd/tests/imagestring_basic.phpt
+++ b/ext/gd/tests/imagestring_basic.phpt
@@ -5,6 +5,12 @@ Rafael Dohms <rdohms [at] gmail [dot] com>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $image = imagecreatetruecolor(180, 30);
diff --git a/ext/gd/tests/imagestringup_basic.phpt b/ext/gd/tests/imagestringup_basic.phpt
index 85b85e1e31c..f1e30a782fb 100644
--- a/ext/gd/tests/imagestringup_basic.phpt
+++ b/ext/gd/tests/imagestringup_basic.phpt
@@ -5,6 +5,12 @@ Rafael Dohms <rdohms [at] gmail [dot] com>
 #testfest PHPSP on 2009-06-20
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 $image = imagecreatetruecolor(180, 30);
diff --git a/ext/gd/tests/imagetruecolortopalette_basic.phpt b/ext/gd/tests/imagetruecolortopalette_basic.phpt
index ae4555bb2ad..2f1c2961a60 100644
--- a/ext/gd/tests/imagetruecolortopalette_basic.phpt
+++ b/ext/gd/tests/imagetruecolortopalette_basic.phpt
@@ -10,6 +10,9 @@ gd
         die("skip test requires GD 2.2.2 or higher");
     }
     if (!function_exists("imagecreatetruecolor")) die("skip GD Version not compatible");
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/libgd00086_extern.phpt b/ext/gd/tests/libgd00086_extern.phpt
index 8d2b0b7d8db..a3585180b83 100644
--- a/ext/gd/tests/libgd00086_extern.phpt
+++ b/ext/gd/tests/libgd00086_extern.phpt
@@ -5,6 +5,9 @@ gd
 --SKIPIF--
 <?php
     if (GD_BUNDLED) die("skip requires external GD library\n");
+    if (!(imagetypes() & IMG_PNG)) {
+        die("skip No PNG support");
+    }
 ?>
 --FILE--
 <?php
diff --git a/ext/gd/tests/test_image_equals_file_palette.phpt b/ext/gd/tests/test_image_equals_file_palette.phpt
index a1022138230..2e294c04c40 100644
--- a/ext/gd/tests/test_image_equals_file_palette.phpt
+++ b/ext/gd/tests/test_image_equals_file_palette.phpt
@@ -2,6 +2,12 @@
 test_image_equals_file(): comparing palette images
 --EXTENSIONS--
 gd
+--SKIPIF--
+<?php
+if (!(imagetypes() & IMG_PNG)) {
+    die("skip No PNG support");
+}
+?>
 --FILE--
 <?php
 require_once __DIR__ . DIRECTORY_SEPARATOR . 'func.inc';