gdImageCopyMergeGray 2381 ext/gd/libgd/gd.c void gdImageCopyMergeGray (gdImagePtr dst, gdImagePtr src, int dstX, int dstY, int srcX, int srcY, int w, int h, int pct)
gdImageCopyMergeGray  223 main/php_compat.h #define gdImageCopyMergeGray php_gd_gdImageCopyMergeGray