php 多维数组小疑点

<br />
//正如#1和#2楼所说对于楼主的例子来说第二个写法确实存在问题<br />
//如果你实在想要一个值不妨改一下数组<br />
	$families = array<br />
(<br />
  "Griffin"=>array<br />
  (<br />
  "Peter",<br />
  "Lois",<br />
  "Megan"<br />
  ),<br />
  "Quagmire"=>array<br />
  (<br />
  "Glenn"<br />
  ),<br />
  "Brown"=>array<br />
  (<br />
  "Cleveland",<br />
  "Loretta",<br />
  "Junior"<br />
  ),<br />
  "Peter"=>9<br />
);<br />
  $Griffin=array(<br />
  "Peter",<br />
  "Lois",<br />
  "Megan"<br />
  );<br />
print_r($families['Griffin'][0]);<br />
print_r($Griffin[0]);<br />
print_r($families[$Griffin[0]]);<br />

<br />
//将名为fmilies数组的 下标值为[Griffin],[0]取出<br />
$families[Griffin][0],<br />
//将名为fmilies数组的 下标值为[Griffin[0]]取出<br />
$families[Griffin[0]],<br />