How to solve php redis502 error problem

Solution to php redis502 error: 1. Use "sudo apt-get install php5-redis" or download phpredis on gitHub; 2. Recompile and install.

The operating environment of this article: Windows 7 system, PHP version 5.5.30, DELL G3 computer

How to solve the php redis502 error problem?

php redis set nginx 502 solution

PHP Version 5.5.30-1+deb.sury.org~trusty+1
redis 3.0.1，

The php-redis extension installed by downloading pr.tar.gz, version 2.10.

Execute $redis->set('test', 'hello world') and report nginx 502 error (nginx 502 error is really a headache).

The problem is located in $this->_redis->setOption(Redis::OPT_SERIALIZER,Redis::SERIALIZER_PHP);

Reason It is php-redis extension version 2.10. If it is too low, you can use sudo apt-get install php5-redis or download

https://github.com/phpredis/phpredis

on gitHub and install it through compilation.

apt-get install The installed version is 2.2.7.

 public function conn() {undefined
        try {undefined
            $this->_redis->pconnect($this->host, $this->port, $this->timeout);
            // Set client option. must AFTER connected
            //var_dump(Redis::OPT_SERIALIZER,Redis::SERIALIZER_PHP);exit();
           $this->_redis->setOption(Redis::OPT_SERIALIZER,Redis::SERIALIZER_PHP);
           //$this->_redis->setOption(0, 0);
            $this->_redis->auth("xxxrs");         // 此处是为 redis 配置的验证密码
 
            $this->connected = true;
 
        } catch (RedisException $e) {undefined
            throw new CHttpException(500, "Redis occurs an error:" . $e->getMessage());
        }
    }

If you use the red code section, a 502 error will be reported. There is no problem with the green code section.

setOption Is this a weird thing? Checked php-redis api

$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE);   // don't serialize data  不序列化数据
$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);    // use built-in serialize/unserialize  用php内置的序列化
$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_IGBINARY);   // use igBinary serialize/unserialize 用扩展IGBINARY序列化
$redis->setOption(Redis::OPT_PREFIX, 'myAppName:'); // use custom prefix on all keys redis key前缀
 
$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);  用此就报502

Why does it go wrong when using PHP’s built-in serialization? In the end what happened?

Later I installed the IGBINARY extension, but it still didn’t work. Finally, I installed the latest version 2.24 of php-redis and ran it again, and there was no problem at all.

2.24 version php-redis source code address https://github.com/nicolasff/phpredis

== ====================

Redis::__construct constructor

$redis = new Redis( );

connect, open link redis service

Parameters

host: string, service address

port: int, port number

timeout: float, link duration (optional, default is 0, no limit to link time)

Note: There is also time in redis.conf, the default is 300

pconnect, popen will not Actively closed links

Refer to the above

setOption to set the redis mode

getOption to view the mode set by redis

ping to view the connection status

Recommended learning: "PHP Video Tutorial"

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