此 » PECL 扩展未与 PHP 捆绑。 安装此 PECL 扩展相关的信息可在手册中标题为 PECL 扩展的安装章节中找到。更多信息如新的发行版本、下载、源文件、 维护人员信息及变更日志等，都在此处： » https://pecl.php.net/package/memcache.
注意:
可以禁用 memcache session 处理程序的支持。“pecl install”选项对此进行提示（默认启用），但是当静态编译为 PHP 时，可以使用 --disable-memcache-session 配置选项。
It is very important to note when reading the information supplied by others on this page that there are two *distinct* memcache PHP implementations for the service "memcached".
1) pecl-memcache
2) pecl-memcached
This page is for the first, pecl-memcache.
If you are looking for pecl-memcached information, visit here:
http://www.php.net/manual/en/book.memcached.phpI hope this will help someone,
Context: I wanted to use memcache
like this:
$memcache = new \Memcache();
but composer suggests me to install the extension
"ext-memcache": "*",
but that one didn't want to work, so I installed
sudo apt install php7.4-memcache
sudo apt install php7.4-memcached
and all workedOn Slackware, after copilling it, you should copy the file /module/memcache.so to /usr/lib/httpd/modules. Then, the instruction extension=memcache.so must be added into the file /etc/httpd/php.ini
Restart the httpd and it should work!