Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Prepend one or more elements to the beginning of an array
<?php array_unshift(array &$array, mixed ...$values): int
<?php     public function doFilter(string $filter, string|array $arguments): mixed {

        [$filter_function, $filter_arguments] = $this->getFunctionAndArguments($filter);

        if ($filter_arguments) {

            array_unshift($filter_arguments, $arguments);

            return call_user_func_array($filter_function, $filter_arguments);

        }

        return $filter_function($arguments);