First install redis into the server
1.wget http://download.redis.io/redis-stable.tar.gz Download the redis source code
2. tar xvzf redis-stable.tar.gz Unzip
3. cd redis-stable
4.make There may be problems when making, and mine has an exception
Exception 1:
make[2]: cc: Command not found
Exception reason: gcc is not installed
Solution: yum install gcc -c++
Exception 2:
zmalloc.h:51:31: error: jemalloc/jemalloc.h: No such file or directory
Exception reason: some compilation dependencies or problems left over from the original compilation
Solution: make distclean. Clean it up and then make again.
5.cd src After make, enter src
6.make test I encountered exception a again
Exception a:
couldn't execute “tclsh8.5″: no such file or directory
Exception reason: tcl is not installed
Solution: yum install -y tcl
7. After make is successful, there will be some more executable files in the src directory: redis-server, redis-cli, etc.
Use the cp command to copy to the usr directory and run it.
cp redis-server /usr/local/bin/
cp redis-cli /usr/local/bin/
Then create a new directory to store the configuration file
mkdir /etc/redis
mkdir /var/redis
mkdir /var/redis /log
mkdir /var/redis/run
mkdir /var/redis/6379
Find the configuration file template in the redis decompression root directory and copy it to the following location.
cp redis.conf /etc/redis/6379.conf
Modify through vim command
daemonize yes The first is to set the service to run in the background
pidfile /var/redis/run/redis_6379.pid #Set the pid file
logfile /var/ redis/log/redis_6379.log #Set the storage of log files
dir /var/redis/6379 #Set the folder
8.redis-server /etc/redis/6379.conf Run redis
9. Use telnet to test whether it is installed And the startup is successful:
Enter redis-cli directly
If 127.0.0.1:6379> appears, it means the installation is successful
redis runs successfully
Next, install the redis extension of php
1.wget https://codeload.github .com/nicolasff/phpredis/zip/master Download extension
2.unzip master Unzip
cd phpredis-master Enter
3./usr/bin/phpize View information (the environment is different, the location of phpize is also different, it is best whereis phpize Find the file location),
If it reports Can't find PHP headers in /usr/include/php, install yum install php-devel first
4. ./configure PS: My php is installed by default, if your php is not For the default installation, you need to specify the --with-php-config parameter to indicate the location of your php-config file.
You can use find to find it~ For example, mine is like this./configure --with-php -c/bin/php-config
5.make && make install PS: Pay attention to your user and permissions here~
6.vim /etc/php.ini Add redis extension configuration
7. Find the location of extension_dir below Add the following content: extension=redis.so
8. Restart Apache #systemctl restart httpd.service
9. Test whether the php redis extension is successfully installed:
$redis = new Redis();
$redis-> ;connect('127.0.0.1',6379);
$redis->set('test','hello world!');
echo $redis->get('test');
?>
If hello world! is successfully output, it means success. ps, if that doesn’t work, you can temporarily turn off the firewall first!
I refer to Feihi’s article and personally installed it experimentally under centos7, and the effect is good! This process is roughly similar to his
, but there will be other problems encountered during the installation process. For this, you can find the reference answer on Baidu. Because the problems
are relatively simple, they are not recorded here! If you don’t understand anything, you can contact me!
Copyright Statement: Hello, I am very happy to meet you on CSDN ! Hope to make friends with you all!
The above introduces the installation of redis database and php-redis extension on CentOS7, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.

PHP remains a powerful and widely used tool in modern programming, especially in the field of web development. 1) PHP is easy to use and seamlessly integrated with databases, and is the first choice for many developers. 2) It supports dynamic content generation and object-oriented programming, suitable for quickly creating and maintaining websites. 3) PHP's performance can be improved by caching and optimizing database queries, and its extensive community and rich ecosystem make it still important in today's technology stack.

In PHP, weak references are implemented through the WeakReference class and will not prevent the garbage collector from reclaiming objects. Weak references are suitable for scenarios such as caching systems and event listeners. It should be noted that it cannot guarantee the survival of objects and that garbage collection may be delayed.

The \_\_invoke method allows objects to be called like functions. 1. Define the \_\_invoke method so that the object can be called. 2. When using the $obj(...) syntax, PHP will execute the \_\_invoke method. 3. Suitable for scenarios such as logging and calculator, improving code flexibility and readability.

Fibers was introduced in PHP8.1, improving concurrent processing capabilities. 1) Fibers is a lightweight concurrency model similar to coroutines. 2) They allow developers to manually control the execution flow of tasks and are suitable for handling I/O-intensive tasks. 3) Using Fibers can write more efficient and responsive code.

The PHP community provides rich resources and support to help developers grow. 1) Resources include official documentation, tutorials, blogs and open source projects such as Laravel and Symfony. 2) Support can be obtained through StackOverflow, Reddit and Slack channels. 3) Development trends can be learned by following RFC. 4) Integration into the community can be achieved through active participation, contribution to code and learning sharing.

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

PHP is not dying, but constantly adapting and evolving. 1) PHP has undergone multiple version iterations since 1994 to adapt to new technology trends. 2) It is currently widely used in e-commerce, content management systems and other fields. 3) PHP8 introduces JIT compiler and other functions to improve performance and modernization. 4) Use OPcache and follow PSR-12 standards to optimize performance and code quality.

The future of PHP will be achieved by adapting to new technology trends and introducing innovative features: 1) Adapting to cloud computing, containerization and microservice architectures, supporting Docker and Kubernetes; 2) introducing JIT compilers and enumeration types to improve performance and data processing efficiency; 3) Continuously optimize performance and promote best practices.


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