如何从 php 中的数组中删除特定元素

Question

I have the following array

Array
(
    [tags] => Array
        (
            [0] => hello
        )

    [assignee] => 60b6a8a38cf91900695dd46b
    [multiple_assignee] => Array
        (
            [0] => Array
                (
                    [accountId] => 60b6a8a38cf91900695dd46b
                )

            [1] => Array
                (
                    [accountId] => 5b39d23d32e26a2de15f174f
                )

        )

)

I want to remove 60b6a8a38cf91900695dd46b from the multiple_assignee array. I have tried with the following code:

if (($key = array_search($this->getUsersHashMapValue($responsiblePartyIds[0]), $mutipleAssignee)) !== false) {
                        unset($mutipleAssignee[$key]['accountId']);
                    }

But it is not removing that element. The intention is I don't want to repeat the 60b6a8a38cf91900695dd46b assignee in the multiple assignee array.

I have also tried with the following code:

foreach($mutipleAssignee as $subKey => $subArray){
                        if($subArray['accountId'] == $this->getUsersHashMapValue($responsiblePartyIds[0])){
                            unset($mutipleAssignee[$subKey]);
                        }
                    }

But it is resulting as

Array
(
    [tags] => Array
        (
            [0] => hello
        )

    [assignee] => 60b6a8a38cf91900695dd46b
    [multiple_assignee] => Array
        (
            [1] => Array
                (
                    [accountId] => 5b39d23d32e26a2de15f174f
                )

        )

)

rather than

[multiple_assignee] => Array
            (
                [0] => Array
                    (
                        [accountId] => 5b39d23d32e26a2de15f174f
                    )
    
            )

Thank you

Answer 1

Just extract the accountId column and search that. Then use that key:

$key = array_search($this->getUsersHashMapValue($responsiblePartyIds[0]), 
                    array_column($mutipleAssignee, 'accountId'));
                    
unset($mutipleAssignee[$key]);

After your edit it seems you just want to reindex the subarray after unset :

$mutipleAssignee = array_values($mutipleAssignee);

Answer 2

I would just use a simple for loop. All of the array_* functions are really helpful but I find that they hide nuances. Since I don't have your functions I'm just making a plain-old one, but you should be able to port this.

$data = [
    'tags' => [
        'hello',
    ],
    'assignee' => '60b6a8a38cf91900695dd46b',
    'multiple_assignee' => [
        [
            'accountId' => '60b6a8a38cf91900695dd46b',
        ],
        [
            'accountId' => '5b39d23d32e26a2de15f174f',
        ],
    ],
];


$assignee = $data['assignee'];
foreach ($data['multiple_assignee'] as $multiple_assignee_key => $multiple_assignee) {
    // if the root assignee is also listed in the multiple assignee area
    if ($multiple_assignee['accountId'] === $assignee) {
        // remove the duplicate from the multiple area
        unset($data['multiple_assignee'][$multiple_assignee_key]);
        
        // re-index the array
        $data['multiple_assignee'] = array_values($data['multiple_assignee']);
    }
}

This outputs:

array(3) {
  ["tags"]=>
  array(1) {
    [0]=>
    string(5) "hello"
  }
  ["assignee"]=>
  string(24) "60b6a8a38cf91900695dd46b"
  ["multiple_assignee"]=>
  array(1) {
    [0]=>
    array(1) {
      ["accountId"]=>
      string(24) "5b39d23d32e26a2de15f174f"
    }
  }
}

Demo here: https://3v4l.org/tYppK