自己个儿写的循环分配txt中的内容

 <?php
 header("Content-type:text/html;charset=utf8");
 //当前日期
 $now = time();
 //作为程序是否执行的依据
 $flag = TRUE;
 //返回数组key
 function getKeys($department) {
     $arrayitm = explode('|', $department);
     $str ='';
     foreach($arrayitm as $k => $v){
         //判断当前位置
         if(strstr($v, '1')){
             $str .= $k;
         }else{
              $str .= '#';
         }
     }
     //正则取数字
     $result=preg_match_all('/\d+/',$str,$arr);
     //print_r($arr);
     if(!empty($arr[0])){
         return $arr[0][0];
     }else{
         //默认
         return '-1';
     }
 }
 //读取log日志
 $file_log ='datelog.txt';
 $logs = file_get_contents($file_log);
 $datetime = date('Y-m-d', $now);
 //$datetime = "2017-03-31"; //测试
 //var_dump($logs);
 //节假日列表
 $exception = array(
    '2017-01-01','2017-01-02','2017-01-27','2017-01-28','2017-01-29','2017-01-30','2017-01-31','2017-02-01','2017-02-02','2017-04-02','2017-04-03','2017-04-04','2017-04-29','2017-04-30','2017-05-01',
     '2017-05-28','2017-05-29','2017-05-30','2017-10-01','2017-10-02','2017-10-03','2017-10-04','2017-10-05','2017-10-06','2017-10-07','2017-10-08'
 );
 //调休列表
 $leaves = array(
    // '2017-03-20','2017-03-21'
 );
 //echo date('Y-m-d', $starttime).'<br/>';
 //$now = strtotime('2017-03-31'); //测试
 $weekday = date('N', $now);//得到星期值：1-7 排除 周6 周天  6和7
 //$weekday =6;
 if(in_array($datetime, $exception)){
        //法定节假日
        $flag = false;
 }elseif(in_array($datetime, $leaves)){
        //调休
        $flag = false;
 }else{
     if(empty($logs)){
     //写入当前时间 判断周末 或者节假日
         $result_date = file_put_contents($file_log, $datetime, LOCK_EX);
     }else{
         //读取内容 作判断
         $logs_new = file_get_contents($file_log);
         $arr = explode('|', $logs_new);
         if(in_array($datetime, $arr)){
             //作为程序是否执行的依据
             $flag = false;
         }else{
             $flag = true;
             //追加内容
              $result_date = file_put_contents($file_log, '|'.$datetime, FILE_APPEND|LOCK_EX);
         }
     }
 }

 $file_dep ='department.txt'; //内容,0|内容2,0|.....
 $file_lea ='leader.txt';     //同上
 $department = file_get_contents($file_dep);
 //将数据分割
 $arritem = explode('|', $department);
 //print_r($arritem);
 $length = count($arritem);

  //获取当前内容下标
 $keys = getKeys($department);
 //var_dump($flag);
 if($flag){
     if($keys == '-1'){
         //默认时
         $replace = str_replace('0', '1', $arritem[0]);
         $arritem[0] = $replace;
     }else{
         $keys = intval($keys);
         if($keys == $length -1){
             //echo 'ok';
             //到数组末端 重0开始
             $replace = str_replace('0', '1', $arritem[0]);
             $arritem[0] = $replace;

             $arritem[$keys] = str_replace('1', '0', $arritem[$keys]);
         }else{
                //echo 'ak1='.$arritem[$keys];
                //清空前一个数据
                $arritem[$keys] = str_replace('1', '0', $arritem[$keys]);
                //更改 数组坐标 +1 的值
                 $zuo = $keys+1;
                 $replace = str_replace('0', '1', $arritem[$zuo]);
                 $arritem[$zuo] = $replace;
         }
     }
     if(!empty($arritem)){
         //将修改后的数据转成字符串存入txt
         $write=implode('|',$arritem);
         //echo $write;exit;
         $result = file_put_contents($file_dep, $write, LOCK_EX);
         if($result){
             //echo '写入文件成功';
         }
     }
 }

 /***************************************************************************************/
 $leader = file_get_contents($file_lea);
 //将数据分割
 $arritem_lea = explode('|', $leader);
 $length_lea = count($arritem_lea);

 //获取当前内容下标
 $keys_lea = getKeys($leader);
 //var_dump($flag);
 if($flag){
     if($keys_lea == '-1'){
         //默认时
         $replace = str_replace('0', '1', $arritem_lea[0]);
         $arritem_lea[0] = $replace;
     }else{
         $keys_lea = intval($keys_lea);
         if($keys_lea == $length_lea -1){
             //到数组末端 重0开始
             $replace = str_replace('0', '1', $arritem_lea[0]);
             $arritem_lea[0] = $replace;

             $arritem_lea[$keys_lea] = str_replace('1', '0', $arritem_lea[$keys_lea]);
         }else{
                //清空前一个数据
                $arritem_lea[$keys_lea] = str_replace('1', '0', $arritem_lea[$keys_lea]);
                //更改 数组坐标 +1 的值
                 $zuo = $keys_lea+1;
                 $replace = str_replace('0', '1', $arritem_lea[$zuo]);
                 $arritem_lea[$zuo] = $replace;
         }
     }
     if(!empty($arritem_lea)){
         //将修改后的数据转成字符串存入txt
         $write_lea=implode('|',$arritem_lea);
         //echo $write;exit;
         $result_lea = file_put_contents($file_lea, $write_lea, LOCK_EX);
         if($result_lea){
             //echo '写入文件成功';
         }
     }
 }
 //输出结果
 if($department && $leader){
 //    echo 'keys='.$keys;
 //    echo "<br/>";
 //    echo 'keys_lea='.$keys_lea;
 //    echo "<br/>";
     //echo $length;
     if($keys == '-1'){
         $k = 0;
     }elseif($keys >= 0 ){
         if(intval($keys) == $length - 1){
             if($flag){
                 $k = 0;
             }else{
                 $k = $keys;
             }
         }else{
             if($flag){
                 $k = $keys+1;
             }else{
                 $k = $keys;
             }
         }
     }

     if($keys_lea == '-1'){
         $k_lea = 0;
     }elseif($keys_lea >= 0 ){
         if(intval($keys_lea) == $length_lea - 1){
             if($flag){
                 $k_lea = 0;
             }else{
                 $k_lea = $keys_lea;
             }
         }else{
             if($flag){
                 $k_lea = $keys_lea+1;
             }else{
                 $k_lea = $keys_lea;
             }
         }
     }

 //   echo 'k='.$k;
 //    echo "<br/>";
 //    echo 'k_lea='.$k_lea;
 //    echo "<br/>";
 //    echo 'length='.$length;
 //echo '<br/>';
 //echo $weekday.'<br/>';
     if (in_array($datetime, $exception)) {
         echo '节假日轮休';
         exit;
     }elseif(in_array($datetime, $leaves)){
         echo '调休';
         exit;
     }else{
         $str1 = explode(',', $arritem[$k])[0];
         $str2 = explode(',', $arritem_lea[$k_lea])[0];
         echo  $datetime.'<br/>';
         echo '值班单位:'.$str1.'<br/>';
         echo '值班领导:'.$str2;
     }
 }
 exit;

需求： 按内容顺序循环分配  排除法定节假日  有点类似排班

原理：没有用数据库  用的txt 默认数据为0 执行程序后 值改为1 作为标识当前内容 获取下标 替换原有内容 在写入文件