ext/gd: imageclone support.

Author: devnexen

ext/gd/config.m4

@@ -198,6 +198,7 @@ AC_DEFUN([PHP_GD_CHECK_VERSION],[
   PHP_CHECK_LIBRARY(gd, gdFontCacheShutdown,           [AC_DEFINE(HAVE_GD_FREETYPE,          1, [ ])], [], [ $GD_SHARED_LIBADD ])
   PHP_CHECK_LIBRARY(gd, gdVersionString,               [AC_DEFINE(HAVE_GD_LIBVERSION,        1, [ ])], [], [ $GD_SHARED_LIBADD ])
   PHP_CHECK_LIBRARY(gd, gdImageGetInterpolationMethod, [AC_DEFINE(HAVE_GD_GET_INTERPOLATION, 1, [ ])], [], [ $GD_SHARED_LIBADD ])
+  PHP_CHECK_LIBRARY(gd, gdImageClone, [AC_DEFINE(HAVE_GD_IMAGECLONE, 1, [ ])], [], [ $GD_SHARED_LIBADD ])
 ])
 
 dnl

ext/gd/gd.c

@@ -4169,3 +4169,26 @@ static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type,
 }
 
 /* }}} */
+
+#if defined(HAVE_GD_IMAGECLONE)
+PHP_FUNCTION(imageclone)
+{
+	zval *IM;
+	gdImagePtr im;
+	gdImagePtr new;
+
+	ZEND_PARSE_PARAMETERS_START(1, 1)
+		Z_PARAM_OBJECT_OF_CLASS(IM, gd_image_ce)
+	ZEND_PARSE_PARAMETERS_END();
+
+	im = php_gd_libgdimageptr_from_zval_p(IM);
+	/* TODO adding the implementation in the bundled part ? */
+	new = gdImageClone(im);
+
+	if (!new) {
+		RETURN_FALSE;
+	}
+
+	php_gd_assign_libgdimageptr_as_extgdimage(return_value, new);
+}
+#endif

ext/gd/gd.stub.php

@@ -794,3 +794,7 @@ function imagesetinterpolation(GdImage $image, int $method = IMG_BILINEAR_FIXED)
  * @refcount 1
  */
 function imageresolution(GdImage $image, ?int $resolution_x = null, ?int $resolution_y = null): array|bool {}
+
+#ifdef HAVE_GD_IMAGECLONE
+function imageclone(GdImage $image): GdImage|false {}
+#endif