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.
158 lines
3.3 KiB
PHP
158 lines
3.3 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\Command;
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/**
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* Base class for Redis commands.
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*
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* @author Daniele Alessandri <suppakilla@gmail.com>
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*/
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abstract class AbstractCommand implements CommandInterface
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{
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private $hash;
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private $arguments = array();
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/**
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* Returns a filtered array of the arguments.
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*
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* @param array $arguments List of arguments.
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* @return array
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*/
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protected function filterArguments(Array $arguments)
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{
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return $arguments;
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}
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/**
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* {@inheritdoc}
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*/
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public function setArguments(Array $arguments)
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{
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$this->arguments = $this->filterArguments($arguments);
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unset($this->hash);
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}
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/**
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* {@inheritdoc}
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*/
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public function setRawArguments(Array $arguments)
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{
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$this->arguments = $arguments;
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unset($this->hash);
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}
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/**
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* {@inheritdoc}
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*/
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public function getArguments()
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{
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return $this->arguments;
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}
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/**
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* {@inheritdoc}
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*/
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public function getArgument($index)
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{
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if (isset($this->arguments[$index])) {
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return $this->arguments[$index];
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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 setHash($hash)
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{
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$this->hash = $hash;
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}
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/**
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* {@inheritdoc}
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*/
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public function getHash()
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{
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if (isset($this->hash)) {
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return $this->hash;
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function parseResponse($data)
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{
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return $data;
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}
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/**
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* Helper function used to reduce a list of arguments to a string.
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*
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* @param string $accumulator Temporary string.
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* @param string $argument Current argument.
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* @return string
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*/
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protected function toStringArgumentReducer($accumulator, $argument)
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{
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if (strlen($argument) > 32) {
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$argument = substr($argument, 0, 32) . '[...]';
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}
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$accumulator .= " $argument";
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return $accumulator;
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}
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/**
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* Returns a partial string representation of the command with its arguments.
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*
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* @return string
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*/
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public function __toString()
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{
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return array_reduce(
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$this->getArguments(),
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array($this, 'toStringArgumentReducer'),
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$this->getId()
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);
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}
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/**
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* Normalizes the arguments array passed to a Redis command.
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*
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* @param array $arguments Arguments for a command.
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* @return array
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*/
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public static function normalizeArguments(Array $arguments)
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{
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if (count($arguments) === 1 && is_array($arguments[0])) {
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return $arguments[0];
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}
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return $arguments;
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}
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/**
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* Normalizes the arguments array passed to a variadic Redis command.
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*
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* @param array $arguments Arguments for a command.
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* @return array
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*/
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public static function normalizeVariadic(Array $arguments)
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{
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if (count($arguments) === 2 && is_array($arguments[1])) {
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return array_merge(array($arguments[0]), $arguments[1]);
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}
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return $arguments;
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}
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}
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