php - 组合数组元素

Question

我有一个 PHP 数组:-

$arr = ["BX_NAME0","BX_NAME1","BX_NAME2","BX_categoryName0","BX_categoryName1","BX_categoryName2","BHA_categories0","BHA_categories1","BHA_categories2"] 

在这里，我想将基于相同结尾整数的元素组合在一起，如 json

$post_data = array(
      '0' => array(
        'BX_NAME0' => $item_type,
        'BX_categoryName0' => $string_key,
        'BHA_categories0' => $string_value
      ),
      '1' => array(
        'BX_NAME1' => $item_type,
        'BX_categoryName1' => $string_key,
        'BHA_categories1' => $string_value
      ),
);

我用过:- filter_var($key , FILTER_SANITIZE_NUMBER_INT);

获取数组元素的整数部分，但不知道如何进一步分组。

Answer 1

您可以像下面那样使用 preg_match() 进行操作:-

$new_array = array();

foreach ($arr as $ar){
   preg_match_all('!\d+!', $ar, $matches); //get the number from string
   $new_array[$matches[0][0]][$ar] = '';

}
echo "<pre/>";print_r($new_array);

输出:- https://eval.in/715548