rPop
From PHP Redis
rPop
Description
Returns and removes the last element of the list.
返回LIST底部（右侧）的VALUE，并且从LIST中把该VALUE弹出。Parameters
key
Return value
STRING if command executed successfully BOOL FALSE in case of failure (empty list)
Example
$redis->rPush('key1', 'A');
$redis->rPush('key1', 'B');
$redis->rPush('key1', 'C'); /* key1 => [ 'A', 'B', 'C' ] */
$redis->rPop('key1'); /* key1 => [ 'A', 'B' ] */