keys of array exist in array

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Maximilian
26 Oct 2019
1
2<?php
3$search_array = array('first' => null, 'second' => 4);
4
5// returns false
6isset($search_array['first']);
7
8// returns true
9array_key_exists('first', $search_array);
10?>
11
12
source
Maelly
05 Oct 2016
1function findKey($array, $keySearch)
2{
3    foreach ($array as $key => $item) {
4        if ($key == $keySearch) {
5            echo 'yes, it exists';
6            return true;
7        } elseif (is_array($item) && findKey($item, $keySearch)) {
8            return true;
9        }
10    }
11    return false;
12}
13
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array key exists in phpcheck array has keys in php
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