PHP版本的自动生成有规则的订单号(或编号)
width = $width; $this->filename = $filename; $this->separate = $separate; } public function getOrUpdateNumber($current, $start) { $record = IOUtil::read_content($this->filename); $arr = explode($this->separate, $record); if($current == $arr[0]){ //如果是同一天,则继续增长 $arr[1]++; IOUtil::write_content("$arr[0],$arr[1]", $this->filename); //将新值存入文件中 return "$arr[0]".str_pad($arr[1],$this->width,0,STR_PAD_LEFT); }else{ //如果两个日期不一样则重新从起始值开始 $arr[0] = $current; $arr[1] = $start; IOUtil::write_content("$arr[0],$arr[1]", $this->filename); //将新值存入文件中 return "$arr[0]".str_pad($arr[1],$this->width,0,STR_PAD_LEFT); } } } class IOUtil{ public static function read_content($filename){ $handle = fopen($filename,"r"); $content = fread($handle,filesize($filename)); return $content; } public static function write_content($content, $filename){ $handle = fopen($filename,"w"); fseek($handle,0); fwrite($handle, $content); return $content; } } //测试代码 //参数含义分别是日期后自增长数的位数, 存储的文件名称, 日期与自增长数的分割数 $obj = new FileEveryDaySerialNumber(6,"EveryDaySerialNumber.dat",","); $current_date = date("Ymd"); echo $obj->getOrUpdateNumber($current_date,1); ?>
名称栏目:PHP版本的自动生成有规则的订单号(或编号)
标题来源:http://myzitong.com/article/pdcedd.html