(PECL memcached >= 0.1.0)
Memcached::add — Add an item under a new key
Memcached::add() is similar to
Memcached::set(), but the operation fails if the
key already exists on the server.
keyThe key under which to store the value.
valueThe value to store.
expirationThe expiration time, defaults to 0. See Expiration Times for more info.
Returns TRUE on success or FALSE on failure.
The Memcached::getResultCode() will return
Memcached::RES_NOTSTORED if the key already exists.
<?php
/**
* Created by PhpStorm.
* User: zhoujunwen
* Date: 15/6/17
* Time: 下午4:51
*/
$mem = new Memcached();
$mem->addServer('127.0.0.1',11211);
if( $mem->add("mystr","this is a memcache test!",3600)){
echo '原始数据缓存成功!';
}else{
echo '数据已存在：'.$mem->get("mystr");
}
?>
