Which php array function for returning array1 items, if their keys are values in array2

[Marcus]

I want to return only full items from array1, when These according keys are values in array2. In the example below I want to return

[5] = {
user_id = 5
username = wolf
mail = wolf@mail.com}

These are the two Arrays:

array1: [5] = {
user_id = 5
username = wolf
mail = wolf@mail.com},
[9] = {
user_id = 9
username = bear
mail = bear@mail.com}

array2: Array(2,5)

Currently I just run a Loop, but would prefer a simple php function. Something like array_intersect_key($array1,$array2)

 

[Lukas W.]

array_intersect_key($array1, array_flip($array2))

Returns

array(1) {
  [5]=>
  array(3) {
    ["user_id"]=>
    int(5)
    ["username"]=>
    string(4) "wolf"
    ["mail"]=>
    string(13) "wolf@mail.com"
  }
}

for the following arrays:

$array1 = array(
            5 => array(
                    'user_id' => 5,
                    'username' => 'wolf',
                    'mail' => 'wolf@mail.com'
                    ),
            9 => array(
                    'user_id' => 9,
                    'username' => 'bear',
                    'mail' => 'bear@mail.com'
                    )
        );
$array2 = array(2,5);

Seems to be what you need.

 

[Marcus]

Outstanding, thanks!

 

[Marcus]

I have updated my addon, replacing existing logic with phps internal function array_intersect_key:

Email Notification of ACP Log Errors [Update 1.1]

• Using PHP functions to replace internal logic (array_intersect_key along with array_flip)
  
• OPTIONAL Added support for specifying administrator accounts in library/config.php
• Addon only executes if emails exists it can send the errors to: So either $config['superAdmins'] or $config['logErrorMailAdmins'] have to be set in library/config.php