php中二维数组for循环赋值变成一维数组的问题

[qq_36197960]

for($i=0;$i<count($fenyepage->res_array);$i++){
$row=$fenyepage->res_array [$i];
print_r($row);
echo "<tr>";
foreach ($row as $key => $value) {
echo "<td>$value</td>";
}
echo "<td><a href='#''>删除用户</a>"."</td>";
echo "<td><a href='#'>修改用户</a>"."</td>";
echo "</tr>";
}
echo "<h1>雇员信息</h1>";
echo "</table>";

print_r($row);


看我二个 print_r($row);一个for循环里面，一个在外面，然后我的李里面的结果是：
Array ( [Id] => 1 [Name] => shunping [Grade] => 1 [Email] => [e-mail] [Salary] => 200 ) Array ( [Id] => 2 [Name] => shunping2 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 ) Array ( [Id] => 3 [Name] => shunping3 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 ) Array ( [Id] => 4 [Name] => shunping4 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 ) Array ( [Id] => 5 [Name] => shunping5 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 ) Array ( [Id] => 7 [Name] => shunping6 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 )
这里有三个一维数组

外面的结果是：Array ( [Id] => 7 [Name] => shunping6 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 )
这里只有一个数组

问题来了，我for循环里面res_array [$i]; 是个二维数组，一个键一面有一个数组，我把键里面那个数组赋值给$row,为什么输出的时候变成了三个数组

还有我for循环结束后的$res原本是要有三个数组在里面的，怎么现在只有一个数组，，，，，，，，，

[xuzuning]

第一个 print_r($row); 在循环内，依次打印共 7 个数组

Array ( [Id] => 1 [Name] => shunping [Grade] => 1 [Email] => [e-mail] [Salary] => 200 )
Array ( [Id] => 2 [Name] => shunping2 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 ) 
Array ( [Id] => 3 [Name] => shunping3 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 ) 
Array ( [Id] => 4 [Name] => shunping4 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 ) 
Array ( [Id] => 5 [Name] => shunping5 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 ) 
Array ( [Id] => 7 [Name] => shunping6 [Grade] => 1 [Email] => [e-mail] [Salary] => 200 )

第二个 print_r($row); 在循环外，打印的是最后一个数组 这不是很正常吗？有什么悬念？