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