在PHP中，如何删除键等于某个单词的数组元素？

我有一个巨大的阵列：

array(47) (
    "name" => string(0) ""
    "state" => string(7) "Alabama"
    "city" => string(0) ""
    "country" => string(13) "United States"
    "location" => string(0) ""
    "rooms" => string(0) ""
    "price" => string(0) ""
    "highlights" => array(5) (
        0 => string(0) ""
        1 => string(0) ""
        2 => string(0) ""
        3 => string(0) ""
        4 => string(0) ""
    )
    "specifications_type" => string(0) ""
    "specifications_lotsize" => string(0) ""
    "specifications_apn" => string(0) ""
    "specifications_interest" => string(0) ""
    "specifications_year" => string(0) ""
    "specifications_buildings" => string(0) ""
    "specifications_stories" => string(0) ""
    "specifications_corridors" => string(0) ""
    "financials_room" => string(0) ""
    "financials_other" => string(0) ""
    "financials_total" => string(0) ""
    "financials_multiplier" => string(0) ""
    "financials_caprate" => string(0) ""
    "financials_netincome" => string(0) ""
    "amenities_pool" => string(0) ""
    "amenities_fitness" => string(0) ""
    "amenities_quarters" => string(0) ""
    "amenities_services" => string(0) ""
    "amenities_spa" => string(0) ""
    "amenities_meetspace" => string(0) ""
    "amenities_parkspace" => string(0) ""
    "amenities_others" => string(0) ""
    "facilities_room" => string(0) ""
    "facilities_hvac" => string(0) ""
    "facilities_furnitures" => string(0) ""
    "facilities_tv" => string(0) ""
    "facilities_ref" => string(0) ""
    "facilities_microwave" => string(0) ""
    "consumables_resto" => string(0) ""
    "consumables_restocpct" => string(0) ""
    "consumables_barlounge" => string(0) ""
    "consumables_barloungecpct" => string(0) ""
    "consumables_bevrevenue" => string(0) ""
    "consumables_others" => string(0) ""
    "specifications" => string(100) "{"type":"","lotsize":"","apn":"","interest":"","year":"","buildings":"","stories":"","corridors":""}"
    "consumables" => string(89) "{"resto":"","restocpct":"","barlounge":"","barloungecpct":"","bevrevenue":"","others":""}"
    "amenities" => string(100) "{"type":"","lotsize":"","apn":"","interest":"","year":"","buildings":"","stories":"","corridors":""}"
    "facilities" => string(100) "{"type":"","lotsize":"","apn":"","interest":"","year":"","buildings":"","stories":"","corridors":""}"
    "financials" => string(100) "{"type":"","lotsize":"","apn":"","interest":"","year":"","buildings":"","stories":"","corridors":""}"
)

我要删除其键以以下任意一项开头的元素： “规格”、“便利设施”、“设施”、“消耗品”、“财务”

---

我曾想过在回调中使用array_filter，但我不知道如何在回调中进行操作。请提供帮助。

您实际上不能为此使用

数组过滤器（）

，因为它保留键，但您不能对键进行过滤，这是您的问题。在这种情况下，您也可以循环

$prefix = array(
  'specifications_',
  'amenities_',
  'facilities_',
  'consumables_',
  'financials_',
);

$output = array();
foreach ($input as $k => $v) {
  foreach ($prefix as $p) {
    $add = true;
    if (strpos($k, $p) === 0) {
      $add = false;
      break;
    }
  }
  if ($add) {
    $output[$k] = $v;
  }
}

---

现在，只要前缀列表没有那么大，数组也没有那么大，这种方法就可以很好地工作，但除非您需要，否则无需过度复杂化解决方案。

您不能实际使用

array\u filter（）

，因为它保留键，但不能对键进行过滤，这是您的问题。在这种情况下，您也可以循环

$prefix = array(
  'specifications_',
  'amenities_',
  'facilities_',
  'consumables_',
  'financials_',
);

$output = array();
foreach ($input as $k => $v) {
  foreach ($prefix as $p) {
    $add = true;
    if (strpos($k, $p) === 0) {
      $add = false;
      break;
    }
  }
  if ($add) {
    $output[$k] = $v;
  }
}

现在，只要前缀列表没有那么大，数组也没有那么大，这个方法就可以很好地工作，但除非您需要，否则无需过度复杂化解决方案。

只传递值，因此不适合此任务。使用遍历数组，将要保留的元素添加到新数组。

只传递值，因此不适合此任务。使用遍历数组，将要保留的元素添加到新数组中。

如何

<?php
    $source_array = array([..the yours array..]);
    $temp_array = array();
    $exclude_keys = array('specifications', 'amenities', 'facilities', 'consumables', 'financials');
    foreach ($source_array as $key => $value) {
        if (!in_array(substr($key, 0, strpos('_') - 1), $exclude_keys)) {
            $temp_array[$key] = $value;
        }
    }

注意，我迭代了数组的键。这是因为不允许更改用于
array\u walk
的数组（或者至少会导致不可预测的行为）

如果要保持原始阵列的完整性，必须先复制它：

$array_copy = $array;    
array_walk(array_keys($array), 'filter', &$array_copy);

那怎么办

注意，我迭代了数组的键。这是因为不允许更改用于
array\u walk
的数组（或者至少会导致不可预测的行为）

如果要保持原始阵列的完整性，必须先复制它：

$array_copy = $array;    
array_walk(array_keys($array), 'filter', &$array_copy);

@菲利克斯：当然，但这并不意味着你可以测试它们。啊，对不起，现在我明白你的意思了。@菲利克斯：当然，但这并不意味着你可以测试它们。啊，对不起，现在我明白你的意思了。