## zRemRangeByRank, zDeleteRangeByRank ##### *Description* Deletes the elements of the sorted set stored at the specified key which have rank in the range \[start,end\]. 移除key对应的有序集合中rank值介于start和stop之间的所有元素。start和stop均是从0开始的，并且两者均可以是负值。当索引值为负值时，表明偏移值从有序集合中score值最高的元素开始。例如：-1表示具有最高score的元素，而-2表示具有次高score的元素，以此类推。 ##### *Parameters* *key* *start*: LONG *end*: LONG ##### *Return value* *LONG* The number of values deleted from the sorted set ##### *Example* ``` <pre class="calibre16">$redis->zAdd('key', 1, 'one'); $redis->zAdd('key', 2, 'two'); $redis->zAdd('key', 3, 'three'); $redis->zRemRangeByRank('key', 0, 1); /* 2 */ $redis->zRange('key', 0, -1, array('withscores' => TRUE)); /* array('three' => 3) */ ``` ##