1.21. PHP connects to Memcached service

1.21.1. PHP Memcache extension installation ¶

PHP Memcache expansion pack download address: http://pecl.php.net/package/memcache , you can download the latest stable pack (stable).

wget http://pecl.php.net/get/memcache-2.2.7.tgz
tar -zxvf memcache-2.2.7.tgz
cd memcache-2.2.7
/usr/local/php/bin/phpize
./configure --with-php-config=/usr/local/php/bin/php-config
make && make install

Note: /usr/local/php/ for php the installation path needs to be adjusted according to the actual directory of your installation.

You will be displayed after the installation is successful memcache.so Expanded location, such as mine:

Installing shared extensions:     /usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/

Finally, we need to add this extension to the php , open yours php.ini add the following at the end of the file:

[Memcache]
extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20090626/"
extension = memcache.so

Restart after adding php I am using the nginx+php-fpm process, so the command is as follows:

kill -USR2 `cat /usr/local/php/var/run/php-fpm.pid`

If it is apache use the following command:

/usr/local/apache2/bin/apachectl restart

Check the installation result

/usr/local/php/bin/php -m | grep memcache

If the installation is successful, it will output: memcache .

Or access it through a browser phpinfo() function, as shown in the following figure:

1.21.2. PHP connection Memcached ¶

<?php
$memcache = new Memcache;             //Create a memcache object
$memcache->connect('localhost', 11211) or die ("Could not connect"); //Connect to Memcached server
$memcache->set('key', 'test');        //Set a variable to memory with the name key and the value test
$get_value = $memcache->get('key');   //Retrieve the value of the key from memory
echo $get_value;
?>

For more PHP operations Memcached, please see: http://php.net/manual/zh/book.memcache.php