predis/lib/Predis/Commands/ZSetRange.php

<?php

namespace Predis\Commands;

use Predis\Iterators\MultiBulkResponseTuple;

class ZSetRange extends Command
{
    public function getId()
    {
        return 'ZRANGE';
    }

    protected function filterArguments(Array $arguments)
    {
        if (count($arguments) === 4) {
            $lastType = gettype($arguments[3]);

            if ($lastType === 'string' && strtolower($arguments[3]) === 'withscores') {
                // Used for compatibility with older versions
                $arguments[3] = array('WITHSCORES' => true);
                $lastType = 'array';
            }

            if ($lastType === 'array') {
                $options = $this->prepareOptions(array_pop($arguments));
                return array_merge($arguments, $options);
            }
        }

        return $arguments;
    }

    protected function prepareOptions($options)
    {
        $opts = array_change_key_case($options, CASE_UPPER);
        $finalizedOpts = array();

        if (isset($opts['WITHSCORES'])) {
            $finalizedOpts[] = 'WITHSCORES';
        }

        return $finalizedOpts;
    }

    protected function withScores()
    {
        $arguments = $this->getArguments();

        if (count($arguments) < 4) {
            return false;
        }

        return strtoupper($arguments[3]) === 'WITHSCORES';
    }

    public function parseResponse($data)
    {
        if ($this->withScores()) {
            if ($data instanceof \Iterator) {
                return new MultiBulkResponseTuple($data);
            }

            $result = array();

            for ($i = 0; $i < count($data); $i++) {
                $result[] = array($data[$i], $data[++$i]);
            }

            return $result;
        }

        return $data;
    }
}