"keys of array exist in array" Code Answer's
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php key in array exists
Misty Manatee
on Jun 07, 2020
<?php
$search_array = array('first' => null, 'second' => 4);
// returns false
isset($search_array['first']);
// returns true
array_key_exists('first', $search_array);
?>
Source: www.php.net
keys of array exist in array
Cute Camel
on Oct 02, 2020
function findKey($array, $keySearch)
{
foreach ($array as $key => $item) {
if ($key == $keySearch) {
echo 'yes, it exists';
return true;
} elseif (is_array($item) && findKey($item, $keySearch)) {
return true;
}
}
return false;
}
Source: stackoverflow.com
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