Memcache 函数
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Memcache::replace

(PECL memcache >= 0.2.0)

Memcache::replaceReplace value of the existing item

说明

bool Memcache::replace ( string $key , mixed $var [, int $flag [, int $expire ]] )

Memcache::replace() should be used to replace value of existing item with key . In case if item with such key doesn't exists, Memcache::replace() returns FALSE. For the rest Memcache::replace() behaves similarly to Memcache::set(). Also you can use memcache_replace() function.

参数

key

The key that will be associated with the item.

var

The variable to store. Strings and integers are stored as is, other types are stored serialized.

flag

Use MEMCACHE_COMPRESSED to store the item compressed (uses zlib).

expire

Expiration time of the item. If it's equal to zero, the item will never expire. You can also use Unix timestamp or a number of seconds starting from current time, but in the latter case the number of seconds may not exceed 2592000 (30 days).

返回值

如果成功则返回 TRUE,失败则返回 FALSE

范例

Example #1 Memcache::replace() example

<?php

$memcache_obj 
memcache_connect('memcache_host'11211);

/* procedural API */
memcache_replace($memcache_obj"test_key""some variable"false30);

/* OO API */
$memcache_obj->replace("test_key""some variable"false30);

?>

参见


Memcache 函数
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程