php数组
sa111 2011-06-09 07:24:55 Array
(
[321] => Array
(
[quantity] => 11
[remarks] => re11
)
[345] => Array
(
[quantity] => 22
[remarks] => re22
)
[346] => Array
(
[quantity] => 33
[remarks] => re33
)
)
上面数组,怎么把321,345,346取出来赋给 $arr,即$arr= '321,345,346';
请教了...