## setex, psetex ##### Description Set the string value in argument as value of the key, with a time to live. PSETEX uses a TTL in milliseconds. 设置一个有生命周期的KEY-VALUE,psetex()使用的周期单位为毫秒。 ##### Parameters *Key* *TTL* *Value* ##### Return value *Bool*`<span class="calibre12">TRUE</span>` if the command is successful. ##### Examples ``` <pre class="calibre9">$redis->setex('key', 3600, 'value'); // sets key → value, with 1h TTL. $redis->psetex('key', 100, 'value'); // sets key → value, with 0.1 sec TTL. ```