This is what the previous comment (fake set multi):
https://github.com/php-memcached-dev/php-memcached/blob/master/php_memcached.c#L1219
(PECL memcached >= 0.1.0)
Memcached::setMulti — 存储多个元素
Memcached::setMulti() 类似于 Memcached::set()，但是使用了
参数 items 指定多个元素来替代单独的 key/value 设置以便于对多个元素的操作。expiration
参数指定的时候一次应用到所有的元素上。
成功时返回 true， 或者在失败时返回 false。
如需要则使用 Memcached::getResultCode()。
示例 #1 Memcached::setMulti() 示例
<?php
$m = new Memcached();
$m->addServer('localhost', 11211);
$items = array(
'key1' => 'value1',
'key2' => 'value2',
'key3' => 'value3'
);
$m->setMulti($items, time() + 300);
?>This is what the previous comment (fake set multi):
https://github.com/php-memcached-dev/php-memcached/blob/master/php_memcached.c#L1219The previous comment is from April 2013, it has a link pointing on current master, so things are changed since 2013 in the source code.
Maybe the right link is
https://github.com/php-memcached-dev/php-memcached/blob/80cb21467a1db6b7b18725df586f11801c823695/php_memcached.c#L1219
By the way, can someone skilled in C confirm the "fake setMulti" problem?Dont expect setmulti is faster then multiple SETs!
It doesn't use the setmulti lib function, it iterats over every key and send him alone.
I can't find any php implementation with setmulti support (needs support for memcached's binary protocol, remember php's "memcache"-extension only supports text-protocol).
Thats bad, not enought throughput to membase.
So i have to use redis instead, coz of its support for get/set multi.As of Feb 2025 Memcached::setMulti still iterates the collection internally and calls memcached_set or memcached_set_by_key rather than the underlying setmulti method, which is only supported in the binary protocol.
As noted by jooonic, performance is unlikely to be much better than iterating yourself in PHP.
https://github.com/php-memcached-dev/php-memcached/blob/80cb21467a1db6b7b18725df586f11801c823695/php_memcached.c#L1219