gdImageFlipVertical 4924 ext/gd/gd.c    			gdImageFlipVertical(im);
gdImageFlipVertical  806 ext/gd/libgd/gd.h void gdImageFlipVertical(gdImagePtr im);
gdImageFlipVertical   69 ext/gd/libgd/gd_transform.c 	gdImageFlipVertical(im);