Multi-stripos with Array of Needles in Haystack and Optional Filtering

multi_stripos.php

<?php

/**
 * Perform an STRIPOS with multiple needles, and optionally filter the result to a bool 
 * @param string    $haystack   The string to search 
 * @param array     $needles    The array of needles to hunt for 
 * @param int       $offset     The offset to start at 
 * @param bool      $filter     Should we filter the result to a boolean? 
 *
 * @return mixed 
**/
function multi_stripos(string $haystack, array $needles, int $offset = 0, bool $filter = false)
{
    $found = array_flip($needles);
    array_walk(
        $found,
        function(&$needle, $key) use ($haystack, $offset) {
            $needle = stripos($haystack, $key, $offset);
        }
    );
    return ($filter) ? count(array_filter($found, function($item) { return $item !== false; })) > 0 : $found;
}