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How to fix PHP redis502 error? The content of the article Xiaobian think good, now to share with you, think there is a need for friends can understand, hope to help everyone, the following with the idea of Xiaobian to read together.

The solution to php redis502 error: 1, use "sudo apt-get install php5-redis" or download phpredis on gitHub;2, recompile and install it.

Operating environment: Windows 7 system, PHP 5.5.30 version, DELL G3 computer

How to fix php redis502 error?

php redis set when nginx 502 solved

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

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

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

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

The reason is php-redis extension version 2.10, too low, you can use sudo apt-get install php5-redis or download it on gitHub

https://github.com/phpredis/phpredis

Install through compilation.

apt-get install Version 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"); //Here is the authentication password configured for redis $this->connected = true; } catch (RedisException $e) {undefined throw new CHttpException(500, "Redis occurs an error:" . $e->getMessage()); } }

If you use the red code, you will report a 502 error, while if you use the green code, you will have no problem.

setOption What is this? Check out php-redis api

$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE); //don't serialize data $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP); // use built-in serialize/unserialize $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_IGBINARY); // use igBinary serialize/unserialize serialize $redis->setOption(Redis::OPT_PREFIX, 'myAppName:'); // use custom prefix on all keys redis key prefix $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP); use this to report 502

Why do I go wrong with php's built-in serialization? What the hell happened?

Later, IGBINARY extension was installed, but it still failed. Finally installed php-redis latest version 2.24, and then run, there is no problem.

2.24 Version php-redis Source Code 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, unlimited link duration)

Note: There is also a time in redis.conf, which defaults to 300

pconnect, popen links that do not actively close

above with reference

setOption Set redis mode

getOption View redis set mode

ping View connection status

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