Redis extension cannot be loaded in PHP

Problem:

During the process of restarting php-fpm, the following error occurred and redis.so could not be loaded

[root@brand009 modules]# /usr/sbin/php-fpm
/usr/sbin/php-fpm: /usr/lib64/libssl.so.10: no version information available (required by /usr/sbin/php-fpm)
/usr/sbin/php-fpm: /usr/lib64/libcrypto.so.10: no version information available (required by /usr/sbin/php-fpm)
/usr/sbin/php-fpm: /usr/lib64/libcrypto.so.10: no version information available (required by /usr/sbin/php-fpm)

Solution:

1. Use php --version to check the PHP version. It is 5.6.6

php --version
PHP 5.6.6 (cli) (built: Mar 9 2015 13:27:38) 
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies

2. This php-fpm The version is found to be 5.3.3

$/usr/sbin/php-fpm -v
PHP 5.3.3 (fpm-fcgi) (built: Oct 30 2014 20:14:56)
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies

3, and the php-fpm version integrated within PHP is 5.6.6

$ /usr/local/php/sbin/php-fpm -v
PHP 5.6.6 (fpm-fcgi) (built: Mar 9 2015 13:27:55)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies

Error reason:

php -fpm version is inconsistent with php version.

Restart with php-fpm integrated inside PHP, successful!

root   18442   1 0 17:36 ?    00:00:01 php-fpm: master process (/usr/local/php/etc/php-fpm.conf)
nobody  30640 18442 0 18:04 ?    00:00:02 php-fpm: pool www     
nobody  31156 18442 0 18:05 ?    00:00:02 php-fpm: pool www     
nobody  32424 18442 0 18:08 ?    00:00:02 php-fpm: pool www

Note:

Be sure to configure extension_dir and extension in php.ini, such as:

extension_dir = "/usr/lib64/php/modules/"
extension=redis.so

The redis.so compiled by phpredis is also It needs to be copied to "/usr/lib64/php/modules/";

"/etc/php.d/" also needs to be soft-linked to redis.so, and a redis.ini must be created. file, the content is as follows:

You can also install phpredis through the command:

pecl install redis

Recommended tutorial: PHP video tutorial

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