php post遍历问题

[q703202511]

print_r($_REQUEST);

取到的值是

Array
(
    [c] => pay2
    [cart] => 1
    [itemid] => Array
        (
            [0] => 103
            [1] => 104
            [2] => 105
            [3] => 106
        )

    [PHPSESSID] => rdkrfasknosmg58o1r1d9i6pf5
)

foreach ($_REQUEST as $key => $value) 
{
    echo "Key: $key; Value: $value<br />\n";
}

遍历不能遍历出itemid ，如何才能遍历成1,2,3这样

[q703202511]

遍历结果

Key: c; Value: pay2<br />
Key: cart; Value: 1<br />
Key: itemid; Value: Array<br />
Key: PHPSESSID; Value: rdkrfasknosmg58o1r1d9i6pf5<br />
itemid : Array

[xuzuning]

foreach ($_REQUEST as $key => $value) { if(is_array($value)) $value = join(',', $value); echo "Key: $key; Value: $value<br />\n"; }

[q703202511]

非常感谢，学会了