random() random(mixed $size = 10, mixed $type = 1, mixed $prefix = '') : string 获取随机字符串编码 Parameters mixed $size mixed $type mixed $prefix Returns string
date() date(mixed $size = 16, mixed $prefix = '') : string 唯一日期编码 Parameters mixed $size mixed $prefix Returns string
number() number(mixed $size = 12, mixed $prefix = '') : string 唯一数字编码 Parameters mixed $size mixed $prefix Returns string