in_array() not finding needle in haystack - php

Question

I have a simple in_array statement in PHP. It's looking for the this needle:
926296884640412424_1534875699
In this haystack:
Array (
[0] => Array
(
[id] => 926296884640412424_1534875699
)
[1] => Array
(
[id] => 926301883885225094_723729160
)
)
My code is like this:
if(!in_array($object->id, $Admin->hiddenItems, true)) {
// Always fires
} else {
// Never fires
}
And it never finds it. I've tried both with strict set to TRUE and FALSE, but neither works.
What am I doing wrong?

Answer 1

You're searching in a multidimensional array. Flatten it before using in_array():
if (!in_array($object->id, array_column($Admin->hiddenItems, 'id'), true)) {
...
}

Answer 2

<?php
$arrays = array(
array(
'id' => '926296884640412424_1534875699'
),
array(
'id' => '926301883885225094_723729160'
)
);
print exist('926296884640412424_1534875699', $arrays);
function exist($id, $arrays) {
foreach ($arrays as $array) {
if (in_array($id, $array)) {
return "exist";
}
}
return "no exist";
}

Answer 3

You can use this recursive function as well to search certain value in multidimensional arrays:
function multi_in_array_r($needle, $haystack) {
if(in_array($needle, $haystack)) {
return true;
}
foreach($haystack as $element) {
if(is_array($element) && multi_in_array_r($needle, $element))
return true;
}
return false;
}
It's up to you to decide what gives best results, because as you can see there are few different way to accomplish the same thing.