$myphonebook = array (
"sbabu" => "5348",
"keith" => "4829",
"carole" => "4533"
);
echo "$myphonebook[0]"; // sbabu
echo "$myphonebook[1]"; // 5348
这些到底是怎么回事啊？

还是不懂啊，你的意思我不懂啊，能不能讲明白一点呢？