How to get the specific date of working days after the specified date in ThinkPHP

/*Create date type record form*/

CREATE TABLE `tb_workday` (

`did` int(11) NOT NULL AUTO_INCREMENT,

`exact_date` varchar(32) NOT NULL COMMENT 'Specific date：Formatdate("Ymd");(20170205)',

`date_year` varchar(32) NOT NULL COMMENT 'Specific date：Formatdate("Y");(2017)',

`date_type` tinyint(2) NOT NULL COMMENT 'Date type: 0, working day; 1, special working day; 2, legal holiday',

PRIMARY KEY (`did`)

) ENGINE=InnoDB AUTO_INCREMENT=829 DEFAULT CHARSET=utf8 COMMENT='Working Days & Statutory Holiday Data for Each Year'

<?php

 

class work_days

{

 /**

  * Get the week

  * @param $date

  * @return mixed

  */

 function get_week($date)

 {

 //Captive date format
 $date_str = date('Y-m-d', strtotime($date));

 //Embroidered into an array
 $arr = explode("-", $date_str);

 //Argument assignment
 //Year
 $year = $arr[0];

 // Month, output 2-bit integer, not enough 2-bit right alignment
 $month = sprintf('%02d', $arr[1]);

 //Day, output 2-bit integer, not enough 2-bit right alignment
 $day = sprintf('%02d', $arr[2]);

 //The default assignment of hour, minute and second is 0;
 $hour = $minute = $second = 0;

 //Convert to timestamp
 $strap = mktime($hour, $minute, $second, $month, $day, $year);

 //Get the digital week day
 $number_wk = date("w", $strap);

 

 //Get the week corresponding to the number
 return $number_wk;

 

 //Customize the week array
 //$weekArr = array("Sunday", "Monday", "Tuesday", "Tuesday", "Friday", "Saturday");
 

 //Get the week corresponding to the number
 //return $weekArr[$number_wk];

 }

 

 

 /**

  * Get the date of each day within the specified date period

  * @param string $startdate Start date

  * @param string $enddate End date

  * @return array

  */

 function getDateFromRange($startdate, $enddate)

 {

 $stimestamp = strtotime($startdate);

 $etimestamp = strtotime($enddate);

 

 // Calculate how many days are there in the date period
 $days = ($etimestamp - $stimestamp) / 86400 + 1;

 

 // Save the date of each day
 $_list_date = array();

 for ($i = 0; $i < $days; $i++) {

 $_list_date[] = date('Y-m-d', $stimestamp + (86400 * $i));

 }

 return $_list_date;

 }

 

 function curl_post($url, $data = null)

 {

 $curl = curl_init();

 curl_setopt($curl, CURLOPT_URL, $url);

 curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);

 curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);

 if (!empty($data)) {

 curl_setopt($curl, CURLOPT_POST, 1);

 curl_setopt($curl, CURLOPT_POSTFIELDS, $data);

 }

 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);

 $output = curl_exec($curl);

 curl_close($curl);

 return $output;

 }

 

 /**

  * Update the database specified year date data

  * @param $year

  * @return int

  */

 function updateDate($year)

 {

 $startDate = date('Y-m-d', strtotime($year . '-01-01'));

 $endDate = date('Y-m-d', strtotime('+1 year', strtotime($startDate)) - 86400);

 $_list_date = self::getDateFromRange($startDate, $endDate);

 

 $url = '/Tools/holiday';//Free API for searching by yourself
 

 $m = M('tb_workday');

 $count = 0;

 

 foreach ($_list_date as $k => $_date) {

 $_ret = 0;

 $_date = date('Ymd', strtotime($_date));

 $_post_data = array('date' => $_date);

 $_ret_curl = curl_post($url, $_post_data);

 $_ret_curl = json_decode($_ret_curl, true);

 

 //Working days
 if ($_ret_curl['data'] == 0) {

 $dateData['exact_date'] = $_date;

 $dateData['date_year'] = $year;

 $dateData['date_type'] = 0;

 $_ret = $m->add($dateData) ? 1 : 0;

 unset($dateData);

 

 

 //Working day to determine whether it is a weekend
 if (in_array(self::get_week($_date), array(0, 1))) {

  //Special working days
  $dateData['exact_date'] = $_date;

  $dateData['date_year'] = $year;

  $dateData['date_type'] = 1;

  $_ret = $m->add($dateData) ? 1 : 0;

  unset($dateData);

 }

 }

 

 //Legal holidays
 if ($_ret_curl['data'] == 2) {

 $dateData['exact_date'] = $_date;

 $dateData['date_year'] = $year;

 $dateData['date_type'] = 2;

 $_ret = $m->add($dateData) ? 1 : 0;

 unset($dateData);

 }

 

 //Off days (weekends) will not be processed for the time being
 /*if ($_ret_curl['data'] == 1) {

 

 }*/

 $_ret && $count++;

 unset($_date, $_post_data, $_ret_curl, $_ret);

 }

 return $count;

 }

 

 /**

  * Get all working days of that year (get from the database, if there is no data in the database, the data will be updated first)

  * @param string $year

  * @return array

  */

 private function getWorkDays($year)

 {

 $m = M('tb_workday');

 $map['date_year'] = $year;

 $map['date_type'] = 0;

 $DateArray = $m->field('exact_date')->where($map)->select();

 if (!empty($DateArray)) {

 $DateArray = array_column($DateArray, 'exact_date');

 return $DateArray;

 } else {

 //Update database working day data
 $ret = self::updateDate($year);

 if ($ret > 0) {

 return self::getWorkDays($year);

 } else {

 return false;

 }

 }

 }

 

 /**

  * Get the specific date of the Nth working day after the start date

  * @param $startdate string Calculate the start date and must include year, month and date information

  * @param $days int Number of days between

  * @return mixed successfully returns the corresponding date, and fails to return false

  */

 public function getNextWorkDate($startdate, $days)

 {

 $year = date('Y', strtotime($startdate));

 $startdate = date('Y-m-d', strtotime($startdate));

 

 $workDays = $this->getWorkDays($year);

 

 $search_key = array_search(date('Ymd', strtotime($startdate)), $workDays);

 

 if ($search_key === false) {//The query date is not working
 //Get the last working day before the query date
 $m = M('tb_workday');

 $map['date_year'] = $year;

 $map['date_type'] = 0;

 $map['DATE_FORMAT(`exact_date`,\'%Y-%m-%d\')'] = array('LT', $startdate);

 $_search_date = $m->where($map)->order('`exact_date` DESC')->getField('exact_date');

 $search_key = array_search($_search_date, $workDays);

 unset($m, $map, $_search_date);

 }

 

 $t_key = $search_key + $days;

 

 if ($t_key <= count($workDays) - 1) {

 return date('Y-m-d', strtotime($workDays[$t_key]));

 } else {

 //The query date has been crossed by the year
 $n_days = $days - (count($workDays) - 1 - $search_key);

 $next_year = $year + 1;

 return $this->getNextWorkDate($next_year . '-01-01', $n_days - 1);

 }

 }

}

 

 

$startdate = '2018-09-28';

$days = 5;

 

$class = new work_days();

$_date_workday = $class->getNextWorkDate($startdate, $days);

echo $_date_workday;//2018-10-10