How to find key of similar value in array?

Question

PHP

Array
(
    [0] => Солнечный остров
    [1] => Дом у Речного вокзала
    [2] => Медовая поляна
    [3] => Чистый ручей
)

For example, find by the word "House" the key where this word occurs in the value
. In this case, it is "1"

Answer 1

$input = ['входящий массив', 'например ваш'];
$output = array_filter($input, function ($str) {return false !== stripos($str, 'например');});
print_r($output);