predis/lib/Predis/Commands/HashSetMultiple.php

<?php

namespace Predis\Commands;

class HashSetMultiple extends Command
{
    public function getId()
    {
        return 'HMSET';
    }

    protected function filterArguments(Array $arguments)
    {
        if (count($arguments) === 2 && is_array($arguments[1])) {
            $flattenedKVs = array($arguments[0]);
            $args = $arguments[1];

            foreach ($args as $k => $v) {
                $flattenedKVs[] = $k;
                $flattenedKVs[] = $v;
            }

            return $flattenedKVs;
        }

        return $arguments;
    }
}