each

定义和用法

each() 函数返回当前元素的键名和键值，并将内部指针向前移动。
该元素的键名和键值返回到带有四个元素的数组中。两个元素（1 和 Value）包含键值，两个元素（0 和 Key）包含键名。

语法

each(array)

技术细节

demo

##配合LIST使用
#ex1
$array3 = ['last'=>['test1','test2'],'test1','test2','test3','test4','test6'];
while (list($key, $val) = each($array3))
{
echo "$key => $val
";
}
##输出
last => Array
0 => test1
1 => test2
2 => test3
3 => test4
4 => test6

#ex2
$array3 = ['last'=>['test1','test2'],'test1','test2','test3','test4','test6'];
show(each($array3));
show(each($array3));
show(each($array3));
show(each($array3));
show(each($array3));
show(each($array3));
##输出
Array
(
    [1] => Array
        (
            [0] => test1
            [1] => test2
        )

    [value] => Array
        (
            [0] => test1
            [1] => test2
        )

    [0] => last
    [key] => last
)
Array
(
    [1] => test1
    [value] => test1
    [0] => 0
    [key] => 0
)
Array
(
    [1] => test2
    [value] => test2
    [0] => 1
    [key] => 1
)
Array
(
    [1] => test3
    [value] => test3
    [0] => 2
    [key] => 2
)
Array
(
    [1] => test4
    [value] => test4
    [0] => 3
    [key] => 3
)
Array
(
    [1] => test6
    [value] => test6
    [0] => 4
    [key] => 4
)