ZSetRange.php
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<?php
/*
* This file is part of the Predis package.
*
* (c) Daniele Alessandri <suppakilla@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Predis\Command;
/**
* @link http://redis.io/commands/zrange
*
* @author Daniele Alessandri <suppakilla@gmail.com>
*/
class ZSetRange extends Command
{
/**
* {@inheritdoc}
*/
public function getId()
{
return 'ZRANGE';
}
/**
* {@inheritdoc}
*/
protected function filterArguments(array $arguments)
{
if (count($arguments) === 4) {
$lastType = gettype($arguments[3]);
if ($lastType === 'string' && strtoupper($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;
}
/**
* Returns a list of options and modifiers compatible with Redis.
*
* @param array $options List of options.
*
* @return array
*/
protected function prepareOptions($options)
{
$opts = array_change_key_case($options, CASE_UPPER);
$finalizedOpts = array();
if (!empty($opts['WITHSCORES'])) {
$finalizedOpts[] = 'WITHSCORES';
}
return $finalizedOpts;
}
/**
* Checks for the presence of the WITHSCORES modifier.
*
* @return bool
*/
protected function withScores()
{
$arguments = $this->getArguments();
if (count($arguments) < 4) {
return false;
}
return strtoupper($arguments[3]) === 'WITHSCORES';
}
/**
* {@inheritdoc}
*/
public function parseResponse($data)
{
if ($this->withScores()) {
$result = array();
for ($i = 0; $i < count($data); ++$i) {
$result[$data[$i]] = $data[++$i];
}
return $result;
}
return $data;
}
}