c58f935fdc
The example (and related documentation at redis.io) was not updated for 5 years. Redis had no sorted sets and hashes when the original code was written (!). An update was really needed. We also use a modern PHP client now: Predis. A copy is shipped within this repository to make life easier to newcomers trying Redis for the first time via this example.
137 lines
3.4 KiB
PHP
137 lines
3.4 KiB
PHP
<?php
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/*
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* This file is part of the Predis package.
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*
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* (c) Daniele Alessandri <suppakilla@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Predis\Protocol\Text;
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use Predis\CommunicationException;
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use Predis\ResponseError;
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use Predis\ResponseQueued;
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use Predis\Command\CommandInterface;
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use Predis\Connection\ComposableConnectionInterface;
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use Predis\Iterator\MultiBulkResponseSimple;
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use Predis\Protocol\ProtocolException;
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use Predis\Protocol\ProtocolInterface;
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/**
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* Implements a protocol processor for the standard wire protocol defined by Redis.
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*
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* @link http://redis.io/topics/protocol
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* @author Daniele Alessandri <suppakilla@gmail.com>
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*/
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class TextProtocol implements ProtocolInterface
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{
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const NEWLINE = "\r\n";
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const OK = 'OK';
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const ERROR = 'ERR';
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const QUEUED = 'QUEUED';
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const NULL = 'nil';
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const PREFIX_STATUS = '+';
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const PREFIX_ERROR = '-';
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const PREFIX_INTEGER = ':';
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const PREFIX_BULK = '$';
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const PREFIX_MULTI_BULK = '*';
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const BUFFER_SIZE = 4096;
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private $mbiterable;
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private $serializer;
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/**
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*
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*/
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public function __construct()
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{
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$this->mbiterable = false;
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$this->serializer = new TextCommandSerializer();
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}
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/**
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* {@inheritdoc}
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*/
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public function write(ComposableConnectionInterface $connection, CommandInterface $command)
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{
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$connection->writeBytes($this->serializer->serialize($command));
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}
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/**
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* {@inheritdoc}
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*/
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public function read(ComposableConnectionInterface $connection)
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{
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$chunk = $connection->readLine();
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$prefix = $chunk[0];
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$payload = substr($chunk, 1);
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switch ($prefix) {
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case '+':
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switch ($payload) {
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case 'OK':
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return true;
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case 'QUEUED':
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return new ResponseQueued();
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default:
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return $payload;
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}
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case '$':
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$size = (int) $payload;
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if ($size === -1) {
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return null;
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}
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return substr($connection->readBytes($size + 2), 0, -2);
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case '*':
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$count = (int) $payload;
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if ($count === -1) {
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return null;
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}
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if ($this->mbiterable) {
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return new MultiBulkResponseSimple($connection, $count);
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}
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$multibulk = array();
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for ($i = 0; $i < $count; $i++) {
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$multibulk[$i] = $this->read($connection);
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}
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return $multibulk;
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case ':':
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return (int) $payload;
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case '-':
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return new ResponseError($payload);
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default:
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CommunicationException::handle(new ProtocolException(
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$connection, "Unknown prefix: '$prefix'"
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));
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function setOption($option, $value)
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{
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switch ($option) {
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case 'iterable_multibulk':
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$this->mbiterable = (bool) $value;
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break;
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}
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}
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}
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