Cette fois, je vais vous apporter une analyse des étapes pour faire fonctionner Redis avec le framework CI (CodeIgniter). Quelles sont les précautions pour faire fonctionner Redis avec le framework CI (CodeIgniter). cas pratique, jetons un coup d'oeil.
1. Ajoutez la ligne de configuration suivante à autoload.php
$autoload['libraries'] = array('redis');
2. Ajoutez le fichier redis.php à /application/config
Le contenu du fichier. est la suivante :
<?php // Default connection group $config['redis_default']['host'] = 'localhost'; // IP address or host $config['redis_default']['port'] = '6379'; // Default Redis port is 6379 $config['redis_default']['password'] = ''; // Can be left empty when the server does not require AUTH $config['redis_slave']['host'] = ''; $config['redis_slave']['port'] = '6379'; $config['redis_slave']['password'] = ''; ?>
3. Ajoutez le fichier Redis.php à /application/libraries
Source du fichier : package de fichiers de la bibliothèque redis
Contenu du fichier :
<?php defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter Redis * * A CodeIgniter library to interact with Redis * * @package CodeIgniter * @category Libraries * @author Joël Cox * @version v0.4 * @link https://github.com/joelcox/codeigniter-redis * @link http://joelcox.nl * @license http://www.opensource.org/licenses/mit-license.html */ class CI_Redis { /** * CI * * CodeIgniter instance * @var object */ private $_ci; /** * Connection * * Socket handle to the Redis server * @var handle */ private $_connection; /** * Debug * * Whether we're in debug mode * @var bool */ public $debug = FALSE; /** * CRLF * * User to delimiter arguments in the Redis unified request protocol * @var string */ const CRLF = "\r\n"; /** * Constructor */ public function construct($params = array()) { log_message('debug', 'Redis Class Initialized'); $this->_ci = get_instance(); $this->_ci->load->config('redis'); // Check for the different styles of configs if (isset($params['connection_group'])) { // Specific connection group $config = $this->_ci->config->item('redis_' . $params['connection_group']); } elseif (is_array($this->_ci->config->item('redis_default'))) { // Default connection group $config = $this->_ci->config->item('redis_default'); } else { // Original config style $config = array( 'host' => $this->_ci->config->item('redis_host'), 'port' => $this->_ci->config->item('redis_port'), 'password' => $this->_ci->config->item('redis_password'), ); } // Connect to Redis $this->_connection = @fsockopen($config['host'], $config['port'], $errno, $errstr, 3); // Display an error message if connection failed if ( ! $this->_connection) { show_error('Could not connect to Redis at ' . $config['host'] . ':' . $config['port']); } // Authenticate when needed $this->_auth($config['password']); } /** * Call * * Catches all undefined methods * @param string method that was called * @param mixed arguments that were passed * @return mixed */ public function call($method, $arguments) { $request = $this->_encode_request($method, $arguments); return $this->_write_request($request); } /** * Command * * Generic command function, just like redis-cli * @param string full command as a string * @return mixed */ public function command($string) { $slices = explode(' ', $string); $request = $this->_encode_request($slices[0], array_slice($slices, 1)); return $this->_write_request($request); } /** * Auth * * Runs the AUTH command when password is set * @param string password for the Redis server * @return void */ private function _auth($password = NULL) { // Authenticate when password is set if ( ! empty($password)) { // See if we authenticated successfully if ($this->command('AUTH ' . $password) !== 'OK') { show_error('Could not connect to Redis, invalid password'); } } } /** * Clear Socket * * Empty the socket buffer of theconnection so data does not bleed over * to the next message. * @return NULL */ public function _clear_socket() { // Read one character at a time fflush($this->_connection); return NULL; } /** * Write request * * Write the formatted request to the socket * @param string request to be written * @return mixed */ private function _write_request($request) { if ($this->debug === TRUE) { log_message('debug', 'Redis unified request: ' . $request); } // How long is the data we are sending? $value_length = strlen($request); // If there isn't any data, just return if ($value_length <= 0) return NULL; // Handle reply if data is less than or equal to 8192 bytes, just send it over if ($value_length <= 8192) { fwrite($this->_connection, $request); } else { while ($value_length > 0) { // If we have more than 8192, only take what we can handle if ($value_length > 8192) { $send_size = 8192; } // Send our chunk fwrite($this->_connection, $request, $send_size); // How much is left to send? $value_length = $value_length - $send_size; // Remove data sent from outgoing data $request = substr($request, $send_size, $value_length); } } // Read our request into a variable $return = $this->_read_request(); // Clear the socket so no data remains in the buffer $this->_clear_socket(); return $return; } /** * Read request * * Route each response to the appropriate interpreter * @return mixed */ private function _read_request() { $type = fgetc($this->_connection); // Times we will attempt to trash bad data in search of a // valid type indicator $response_types = array('+', '-', ':', '$', '*'); $type_error_limit = 50; $try = 0; while ( ! in_array($type, $response_types) && $try < $type_error_limit) { $type = fgetc($this->_connection); $try++; } if ($this->debug === TRUE) { log_message('debug', 'Redis response type: ' . $type); } switch ($type) { case '+': return $this->_single_line_reply(); break; case '-': return $this->_error_reply(); break; case ':': return $this->_integer_reply(); break; case '$': return $this->_bulk_reply(); break; case '*': return $this->_multi_bulk_reply(); break; default: return FALSE; } } /** * Single line reply * * Reads the reply before the EOF * @return mixed */ private function _single_line_reply() { $value = rtrim(fgets($this->_connection)); $this->_clear_socket(); return $value; } /** * Error reply * * Write error to log and return false * @return bool */ private function _error_reply() { // Extract the error message $error = substr(rtrim(fgets($this->_connection)), 4); log_message('error', 'Redis server returned an error: ' . $error); $this->_clear_socket(); return FALSE; } /** * Integer reply * * Returns an integer reply * @return int */ private function _integer_reply() { return (int) rtrim(fgets($this->_connection)); } /** * Bulk reply * * Reads to amount of bits to be read and returns value within * the pointer and the ending delimiter * @return string */ private function _bulk_reply() { // How long is the data we are reading? Support waiting for data to // fully return from redis and enter into socket. $value_length = (int) fgets($this->_connection); if ($value_length <= 0) return NULL; $response = ''; // Handle reply if data is less than or equal to 8192 bytes, just read it if ($value_length <= 8192) { $response = fread($this->_connection, $value_length); } else { $data_left = $value_length; // If the data left is greater than 0, keep reading while ($data_left > 0 ) { // If we have more than 8192, only take what we can handle if ($data_left > 8192) { $read_size = 8192; } else { $read_size = $data_left; } // Read our chunk $chunk = fread($this->_connection, $read_size); // Support reading very long responses that don't come through // in one fread $chunk_length = strlen($chunk); while ($chunk_length < $read_size) { $keep_reading = $read_size - $chunk_length; $chunk .= fread($this->_connection, $keep_reading); $chunk_length = strlen($chunk); } $response .= $chunk; // Re-calculate how much data is left to read $data_left = $data_left - $read_size; } } // Clear the socket in case anything remains in there $this->_clear_socket(); return isset($response) ? $response : FALSE; } /** * Multi bulk reply * * Reads n bulk replies and return them as an array * @return array */ private function _multi_bulk_reply() { // Get the amount of values in the response $response = array(); $total_values = (int) fgets($this->_connection); // Loop all values and add them to the response array for ($i = 0; $i < $total_values; $i++) { // Remove the new line and carriage return before reading // another bulk reply fgets($this->_connection, 2); // If this is a second or later pass, we also need to get rid // of the $ indicating a new bulk reply and its length. if ($i > 0) { fgets($this->_connection); fgets($this->_connection, 2); } $response[] = $this->_bulk_reply(); } // Clear the socket $this->_clear_socket(); return isset($response) ? $response : FALSE; } /** * Encode request * * Encode plain-text request to Redis protocol format * @link http://redis.io/topics/protocol * @param string request in plain-text * @param string additional data (string or array, depending on the request) * @return string encoded according to Redis protocol */ private function _encode_request($method, $arguments = array()) { $request = '$' . strlen($method) . self::CRLF . $method . self::CRLF; $_args = 1; // Append all the arguments in the request string foreach ($arguments as $argument) { if (is_array($argument)) { foreach ($argument as $key => $value) { // Prepend the key if we're dealing with a hash if (!is_int($key)) { $request .= '$' . strlen($key) . self::CRLF . $key . self::CRLF; $_args++; } $request .= '$' . strlen($value) . self::CRLF . $value . self::CRLF; $_args++; } } else { $request .= '$' . strlen($argument) . self::CRLF . $argument . self::CRLF; $_args++; } } $request = '*' . $_args . self::CRLF . $request; return $request; } /** * Info * * Overrides the default Redis response, so we can return a nice array * of the server info instead of a nasty string. * @return array */ public function info($section = FALSE) { if ($section !== FALSE) { $response = $this->command('INFO '. $section); } else { $response = $this->command('INFO'); } $data = array(); $lines = explode(self::CRLF, $response); // Extract the key and value foreach ($lines as $line) { $parts = explode(':', $line); if (isset($parts[1])) $data[$parts[0]] = $parts[1]; } return $data; } /** * Debug * * Set debug mode * @param bool set the debug mode on or off * @return void */ public function debug($bool) { $this->debug = (bool) $bool; } /** * Destructor * * Kill the connection * @return void */ function destruct() { if ($this->_connection) fclose($this->_connection); } } ?>
4. Ensuite, vous pouvez l'utiliser dans le fichier comme ceci
<?php if($this->redis->get('mark_'.$gid) === null){ //如果未设置 $this->redis->set('mark_'.$gid, $giftnum); //设置 $this->redis->EXPIRE('mark_'.$gid, 30*60); //设置过期时间 (30 min) }else{ $giftnum = $this->redis->get('mark_'.$gid); //从缓存中直接读取对应的值 } ?>
5. Le fait est que ce dont vous avez besoin est expliqué en détail ici
Tout ce dont vous avez besoin. besoin d'utiliser La fonction doit seulement être modifiée $redis ==> $this->redis
Pour utiliser la fonction de la bibliothèque Redis et son utilisation en php, veuillez vous référer à ce site http://www.jb51.net/article/33887. htm
Ce qu'il faut noter est :
(1) Vous devez installer le service redis (installation de Windows) localement
(2) et activer le service redis
(3) Que ce soit Windows ou Linux Vous devez installer l'extension redis de la version correspondante de PHP
Je pense que vous maîtrisez la méthode après avoir lu le cas dans cet article. Pour plus d'informations intéressantes, veuillez prêter attention aux autres articles connexes sur le site Web PHP chinois !
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Ce qui précède est le contenu détaillé de. pour plus d'informations, suivez d'autres articles connexes sur le site Web de PHP en chinois!