根据嵌套数组中的值删除数组元素

Question

我尝试使用基于来自嵌套数组的值的PHP unset(key)函数删除整个父数组。

嵌套阵列看起来像

Array ( 
[0] => Array ( 
    [ID] => 9909 
    [SHIPPING_AMOUNT] => 5 
    [TOTAL_TAX] => 0 
    [GRAND_AMOUNT] => 49.97 
    [ITEMS_AMOUNT] => 44.97 
    [ITEMS] => Array ( 
     [0] => Array ( 
      [CODE] => TEST 
      [QTY] => 1 
      [UNIT_PRICE] => 14.99) 
     [1] => Array ( 
      [CODE] => NNKIT 
      [QTY] => 1 
      [UNIT_PRICE] => 9.99) 
     [2] => Array ( 
      [CODE] => MAINKIT 
      [QTY] => 1 
      [UNIT_PRICE] => 19.99) 
     ) 
    ) 
[1] => Array ( 
    [ID] => 9910 
    [SHIPPING_AMOUNT] => 5 
    [TOTAL_TAX] => 0 
    [GRAND_AMOUNT] => 74.96 
    [ITEMS_AMOUNT] => 69.96 
    [ITEMS] => Array ( 
     [0] => Array ( 
      [CODE] => NNKIT 
      [QTY] => 1 
      [UNIT_PRICE] => 9.99) 
     [1] => Array ( 
      [CODE] => MAINKIT 
      [QTY] => 3 
      [UNIT_PRICE] => 19.99) 
     ) 
    ) 
[2] => Array ( 
    [ID] => 9911 
    [SHIPPING_AMOUNT] => 5 
    [TOTAL_TAX] => 0 
    [GRAND_AMOUNT] => 44.98 
    [ITEMS_AMOUNT] => 39.98 
    [ITEMS] => Array ( 
     [0] => Array ( 
      [CODE] => MAINKIT 
      [QTY] => 2 
      [UNIT_PRICE] => 19.99) 
     ) 
    ) 
[3] => Array ( 
    [ID] => 9912 
    [SHIPPING_AMOUNT] => 5 
    [TOTAL_TAX] => 0 
    [GRAND_AMOUNT] => 29.98 
    [ITEMS_AMOUNT] => 24.98 
    [ITEMS] => Array ( 
     [0] => Array ( 
      [CODE] => TEST 
      [QTY] => 1 
      [UNIT_PRICE] => 14.99) 
     [1] => Array ( 
      [CODE] => NEWTEST 
      [QTY] => 1 
      [UNIT_PRICE] => 9.99) 
     ) 
    ) 

并且我检查值是CODE = MAINKIT。如果不存在于一个嵌套数组中，那么应该删除主数组（在这种情况下，父数组为array[3]），但不知何故，返回的key来自嵌套数组，而不是父数组。

PHP代码：

foreach($array as $key => $value){ 
    if(is_array($value) && $value['CODE'] != 'MAINKIT') 
      unset($key); 
} 

Answer 1

的CODE元素是$value['ITEMS']数组内，不直接在$value。

要判断MAINKIT是否不在任何项目中，您必须遍历所有项目，测试它们中的任何项目是否匹配。如果没有，那么删除数组元素。

尝试：

foreach($array as $key => $value){ 
    if (is_array($value) && is_array($value['ITEMS'])) 
     $found_mainkit = false; 
     foreach ($value['ITEMS'] as $item) { 
      if($item['CODE'] == 'MAINKIT') { 
       $found_mainkit = true; 
       break; 
      } 
     } 
     if (!$found_mainkit) { 
      unset($array[$key]); 
     } 
    } 
}