--TEST-- Issue #83 (Arrays and negative index) --SKIPIF-- --FILE-- -1,1=>1]))); $a = [ -1 => -1, 0, 1 => 1, 2 ]; // next free element == 3 and count() == 3, but it's still not an MP array unset($a[1]); var_dump(msgpack_unpack(msgpack_pack($a))); ?> OK --EXPECT-- array(2) { [-1]=> int(-1) [1]=> int(1) } array(3) { [-1]=> int(-1) [0]=> int(0) [2]=> int(2) } OK