Question

我有一个变量$items，其中包含以下数据。

Array
(
    [0] => stdClass Object
        (
            [course_id] => 8
            [doc_id] => 85
            [doc_title] => PDF Notes
            [doc_price] => 243
        )

    [1] => stdClass Object
        (
            [course_id] => 6
            [doc_id] => 73
            [doc_title] => PDF Notes
            [doc_price] => 12
        )

    [2] => stdClass Object
        (
            [course_id] => 6
            [doc_id] => 75
            [doc_title] => Audio Topics
            [doc_price] => 21
        )

    [3] => stdClass Object
        (
            [course_id] => 6
            [doc_id] => 77
            [doc_title] => Video Past Papers
            [doc_price] => 32
        )

)

我想对数据进行分类。 course_id应该成为关键，具有类似course_id的课程应该被分类并成为该关键的价值。就像在about数组中一样，[1]，[2]和[3]具有相同的course_id，因此for key =＆gt; 6，应该使用具有文档73,75和77的子数组制作数组。

array => (
    '6' => 'array of docs with course_id 6',
    '8' => 'array of docs with course_id 8',
)

VAR_EXPORT

array (
  0 => 
  stdClass::__set_state(array(
     'course_id' => '8',
     'doc_id' => '85',
     'doc_title' => 'PDF Notes',
     'doc_price' => '243',
  )),
  1 => 
  stdClass::__set_state(array(
     'course_id' => '6',
     'doc_id' => '73',
     'doc_title' => 'PDF Notes',
     'doc_price' => '12',
  )),
  2 => 
  stdClass::__set_state(array(
     'course_id' => '6',
     'doc_id' => '75',
     'doc_title' => 'Audio Topics',
     'doc_price' => '21',
  )),
  3 => 
  stdClass::__set_state(array(
     'course_id' => '6',
     'doc_id' => '77',
     'doc_title' => 'Video Past Papers',
     'doc_price' => '32',
  )),
)

Answer 1

试试这个：使用get_object_vars将obj转换为数组。

$newarray = array();
foreach ($items as $item)
{
  $newarray[$item->course_id][] = get_object_vars($item); 
}

在php中使用类似的course_id对象进行分组

1 个答案: