PHP从关联数组中删除元素

Question

我有一个PHP数组,看起来像这样:

Index              Key     Value
[0]                1       Awaiting for Confirmation
[1]                2       Assigned
[2]                3       In Progress
[3]                4       Completed
[4]                5       Mark As Spam

当我var_dump数组值时,我得到这个:

array(5) { [0]=> array(2) { ["key"]=> string(1) "1" ["value"]=> string(25) "Awaiting for Confirmation" } [1]=> array(2) { ["key"]=> string(1) "2" ["value"]=> string(9) "Assigned" } [2]=> array(2) { ["key"]=> string(1) "3" ["value"]=> string(11) "In Progress" } [3]=> array(2) { ["key"]=> string(1) "4" ["value"]=> string(9) "Completed" } [4]=> array(2) { ["key"]=> string(1) "5" ["value"]=> string(12) "Mark As Spam" } }

我想删除Completed和Mark As Spam.我知道我可以unset[$array[3],$array[4]),但问题是有时索引号可能不同.

有没有办法通过匹配值名称而不是键值来删除它们？

Answer 1

你的数组很奇怪:为什么不只使用keyas索引,valueas ...值？

如果您的数组声明如下,那会不会更容易:

$array = array(
    1 => 'Awaiting for Confirmation', 
    2 => 'Asssigned', 
    3 => 'In Progress', 
    4 => 'Completed', 
    5 => 'Mark As Spam', 
);

这将允许您使用您的key索引值来访问数组...

并且您可以使用函数来搜索值,例如array_search():

$indexCompleted = array_search('Completed', $array);
unset($array[$indexCompleted]);

$indexSpam = array_search('Mark As Spam', $array);
unset($array[$indexSpam]);

var_dump($array);

比你的阵列更容易,没有？

相反,您的数组看起来像这样:

$array = array(
    array('key' => 1, 'value' => 'Awaiting for Confirmation'), 
    array('key' => 2, 'value' => 'Asssigned'), 
    array('key' => 3, 'value' => 'In Progress'), 
    array('key' => 4, 'value' => 'Completed'), 
    array('key' => 5, 'value' => 'Mark As Spam'), 
);

您必须遍历所有项目,分析value和取消设置正确的项目:

foreach ($array as $index => $data) {
    if ($data['value'] == 'Completed' || $data['value'] == 'Mark As Spam') {
        unset($array[$index]);
    }
}
var_dump($array);

即使可行,也不是那么简单......而且我坚持认为:你能不能改变阵列的格式,使用更简单的键/值系统？

Answer 2

  ...

  $array = array(
      1 => 'Awaiting for Confirmation', 
      2 => 'Asssigned', 
      3 => 'In Progress', 
      4 => 'Completed', 
      5 => 'Mark As Spam', 
  );



  return array_values($array);
  ...

Answer 3

$key = array_search("Mark As Spam", $array);
unset($array[$key]);

对于2D阵列......

$remove = array("Mark As Spam", "Completed");
foreach($arrays as $array){
    foreach($array as $key => $value){
        if(in_array($value, $remove)) unset($array[$key]);
    }
}

Answer 4

你可以用这个

unset($dataArray['key']);