如何在数组中的PHP中使用“两个”计数器？

Question

我得到2个数组，第一个是用户检查的ID列表，第二个是用户ID，我想存储在数据库中array(2) {     ["id_users"]=> string(6) "2,5,6,"     ["selected"]=> string(30) "1,2,2,2,2,1,2,2,2,2,2,1,1,1,1," }我应该将“ 1,2,2,2,2”存储到用户“ 2”，将“ 1,2,2,2,2”存储到用户“ 5”和“ 2,1,1,1,1”给用户“ 6”$list_checked = explode(",", $_GET['selected']);//$class_name = explode(",", $_GET['class_name']);$id_user = explode(",", $_GET['id_users']);$count =  count($list_checked);$count_id =  count($id_user);$count_i = $count - 1;$count_id_i = $count_id - 1;$n = $count_i / $count_id_i ;

Answer 1

这是为您提供的一些代码：

// NOTE, I removed last commas from strings in order to work correctly

$list_checked = explode(",", '1,2,2,2,2,1,2,2,2,2,2,1,1,1,1');

$id_user = explode(",", '2,5,6');

$count =  count($list_checked);

$count_id =  count($id_user);

// define chunk size as result of division

$chunk_size = $count / $count_id;

// get chunks

$chunks = array_chunk($list_checked, $chunk_size);

// ierate over user and get related chunk by key    

foreach ($id_user as $key => $value) {

    echo 'ID: ', $value, ', chunk: ', print_r($chunks[$key], 1);

}