gdImageSaveAlpha 1954 ext/gd/gd.c    	gdImageSaveAlpha(im, Z_LVAL_PP(save));
gdImageSaveAlpha  579 ext/gd/libgd/gd.h void gdImageSaveAlpha(gdImagePtr im, int saveAlphaArg);
gdImageSaveAlpha  116 ext/gd/libgd/testac.c   gdImageSaveAlpha (im_out, !blending);