Source https://github.com/php/php-src/pull/7490

diff --git a/ext/gd/gd.c b/ext/gd/gd.c
index 287cb2f712f8..880d6dddc7d7 100644
--- a/ext/gd/gd.c
+++ b/ext/gd/gd.c
@@ -88,10 +88,10 @@
 #define M_PI 3.14159265358979323846
 #endif
 
-/* workaround typo in system libgd 2.3.0 */
-#if defined(GD_FLIP_HORINZONTAL) && !defined(GD_FLIP_HORIZONTAL)
-#define GD_FLIP_HORIZONTAL GD_FLIP_HORINZONTAL
-#endif
+/* don't used libgd constants, not used, so going to be removed */
+#define PHP_GD_FLIP_HORIZONTAL 1
+#define PHP_GD_FLIP_VERTICAL   2
+#define PHP_GD_FLIP_BOTH       3
 
 #ifdef HAVE_GD_FREETYPE
 static void php_imagettftext_common(INTERNAL_FUNCTION_PARAMETERS, int);
@@ -400,9 +400,9 @@ PHP_MINIT_FUNCTION(gd)
 	/* GD2 image format types */
 	REGISTER_LONG_CONSTANT("IMG_GD2_RAW", GD2_FMT_RAW, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("IMG_GD2_COMPRESSED", GD2_FMT_COMPRESSED, CONST_CS | CONST_PERSISTENT);
-	REGISTER_LONG_CONSTANT("IMG_FLIP_HORIZONTAL", GD_FLIP_HORIZONTAL, CONST_CS | CONST_PERSISTENT);
-	REGISTER_LONG_CONSTANT("IMG_FLIP_VERTICAL", GD_FLIP_VERTICAL, CONST_CS | CONST_PERSISTENT);
-	REGISTER_LONG_CONSTANT("IMG_FLIP_BOTH", GD_FLIP_BOTH, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("IMG_FLIP_HORIZONTAL", PHP_GD_FLIP_HORIZONTAL, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("IMG_FLIP_VERTICAL", PHP_GD_FLIP_VERTICAL, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("IMG_FLIP_BOTH", PHP_GD_FLIP_BOTH, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("IMG_EFFECT_REPLACE", gdEffectReplace, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("IMG_EFFECT_ALPHABLEND", gdEffectAlphaBlend, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("IMG_EFFECT_NORMAL", gdEffectNormal, CONST_CS | CONST_PERSISTENT);
@@ -3599,15 +3599,15 @@ PHP_FUNCTION(imageflip)
 	im = php_gd_libgdimageptr_from_zval_p(IM);
 
 	switch (mode) {
-		case GD_FLIP_VERTICAL:
+		case PHP_GD_FLIP_VERTICAL:
 			gdImageFlipVertical(im);
 			break;
 
-		case GD_FLIP_HORIZONTAL:
+		case PHP_GD_FLIP_HORIZONTAL:
 			gdImageFlipHorizontal(im);
 			break;
 
-		case GD_FLIP_BOTH:
+		case PHP_GD_FLIP_BOTH:
 			gdImageFlipBoth(im);
 			break;