(PECL memcache >= 0.2.0)
Memcache::replace — 锟芥换锟窖撅拷锟斤拷锟节碉拷元锟截碉拷值
Memcache::replace()通锟斤拷key锟斤拷锟斤拷锟斤拷元锟截诧拷锟芥换锟斤拷值锟斤拷锟斤拷key
锟斤拷应锟斤拷元锟截诧拷锟斤拷锟斤拷时锟斤拷Memcache::replace()锟斤拷锟斤拷FALSE锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷Memcache::replace()
锟斤拷锟斤拷为锟斤拷Memcache::set()一锟斤拷锟斤拷
同锟斤拷锟斤拷也锟斤拷锟斤拷使锟矫猴拷锟斤拷memcache_replace()锟斤拷
key锟斤拷锟斤拷锟芥换值锟斤拷元锟截碉拷key锟斤拷
var锟斤拷要锟芥储锟斤拷锟铰碉拷值锟斤拷锟街凤拷锟斤拷锟斤拷锟斤拷值直锟接存储锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫伙拷锟斤拷娲拷锟�
flag
使锟斤拷MEMCACHE_COMPRESSED指锟斤拷锟斤拷值锟斤拷锟斤拷压锟斤拷(使锟斤拷zlib)锟斤拷
expire锟斤拷前写锟诫缓锟斤拷锟斤拷锟斤拷莸锟绞憋拷洹ｏ拷锟斤拷锟斤拷值锟斤拷锟斤拷为0锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟节★拷锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷锟経NIX时锟斤拷锟斤拷锟� 锟斤拷锟斤拷为锟斤拷位锟斤拷锟斤拷锟斤拷锟斤拷锟接碉拷前锟斤拷锟斤拷锟绞憋拷锟筋）锟斤拷说锟斤拷锟斤拷锟斤拷锟捷的癸拷锟斤拷时锟戒，锟斤拷锟斤拷锟节猴拷一锟斤拷锟斤拷锟矫凤拷式锟叫ｏ拷锟斤拷锟杰筹拷锟斤拷 2592000锟诫（30锟届）锟斤拷
锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE锟斤拷
Example #1 Memcache::replace()示锟斤拷
<?php
$memcache_obj = memcache_connect('memcache_host', 11211);
/* procedural API */
memcache_replace($memcache_obj, "test_key", "some variable", false, 30);
/* OO API */
$memcache_obj->replace("test_key", "some variable", false, 30);
?>