php-redis中文参考手册_incr_incrBy_incrByFloat_decr_de...
incr,incrByDescriptionIncrementthenumberstoredatkeybyone.Ifthesecondargumentisfilled,itwillbeusedastheintegervalueoftheincrement.对指定的KEY的值自增1。如何填写了第二个参数,将把第二个参数自增给KEY的值。Parameterskeyvalue:valuethatwil