[英]Find gap date ranges from array with serialized dates in php
For a hotel management system, I have the following php array which contains dates on which a hotel room is booked. 对于酒店管理系统,我有以下php数组 ,其中包含预订酒店房间的日期。 New guests can't be booked into the room on these dates. 这些日期不能将新客人预订到房间。
Array([0] => '2017-02-23'
[1] => '2017-02-24'
[2] => '2017-04-01'
[3] => '2017-04-02'
[4] => '2017-04-03'
[5] => '2017-04-04'
[6] => '2017-04-05'
[7] => '2017-04-06'
[8] => '2017-04-07'
[9] => '2017-04-08'
[10] => '2017-04-09'
[11] => '2017-04-10'
[12] => '2017-04-11'
[13] => '2017-04-12'
[14] => '2017-04-13'
[15] => '2017-04-14'
[16] => '2017-04-15'
[17] => '2017-04-16'
[18] => '2017-04-17'
[19] => '2017-04-18'
[20] => '2017-04-19'
[21] => '2017-04-20'
[22] => '2017-04-21'
[23] => '2017-04-22'
[24] => '2017-04-23'
[25] => '2017-04-24'
[26] => '2017-04-25'
[27] => '2017-04-26'
[28] => '2017-04-27'
[29] => '2017-04-28'
[30] => '2017-04-29'
[31] => '2017-04-30'
)
This array tell us that the room is reserved 2 different periods: 这个数组告诉我们房间保留了2个不同的时期:
2017-02-23
to 2017-02-24
2017-02-23
至2017-02-24
2017-04-01
to 2017-04-30
2017-04-01
至2017-04-30
I would like to find the date ranges where the room is available, within a certain broad window. 我想在某个宽阔的窗口中找到有空房间的日期范围。
For example, if someone wanted to stay in the room from 2017-02-15
to 2017-05-07
, then I would like the system to return the following date ranges for availability: 例如,如果有人想留在房间里,从2017-02-15
至2017-05-07
,那么我想系统返回下列日期范围的可用性:
2017-02-15
to 2017-02-22
2017-02-15
至2017-02-22
2017-02-25
to 2017-03-31
2017-02-25
至2017-03-31
2017-05-01
to 2017-05-07
2017-05-01
至2017-05-07
If someone want to stay in the room from 2017-02-22
to 2017-03-30
, then I would like the system to return the following date ranges for availability: 如果有人想在2017-02-22
至2017-03-30
日之间留在房间里,那么我希望系统返回以下日期范围以了解空房情况:
2017-02-25
to 2017-03-30
2017-02-25
至2017-03-30
Any help? 有什么帮助吗? Thanks a lot!! 非常感谢!!
Thanks George, what a fun little challenge. 感谢乔治,这是一个有趣的小挑战。 I rolled my own date-range array-filling function which I am very proud of. 我推出了自己的日期范围数组填充函数 ,这让我感到非常自豪。 And with the help of a couple array functions and a couple foreach loops, I believe I have satisfied the brief. 借助于几个数组函数和几个foreach循环,我相信我已经满足了简短的要求。 Here is the Demo . 这是演示 。
Code: 码:
function fillDateRange($a,$b,$x=0,$dates=[]){
while(end($dates)!=$b && $x=array_push($dates,date("Y-m-d",strtotime("$a +$x day"))));
return $dates;
}
$booked=array(0=>'2017-02-03',1=>'2017-02-24',2=>'2017-04-01',3=>'2017-04-02',
4=>'2017-04-03',5=>'2017-04-04',6=>'2017-04-05',7=>'2017-04-06',
8=>'2017-04-07',9=>'2017-04-08',10=>'2017-04-09',11=>'2017-04-10',
12=>'2017-04-11',13=>'2017-04-12',14=>'2017-04-13',15=>'2017-04-14',
16=>'2017-04-15',17=>'2017-04-16',18=>'2017-04-17',19=>'2017-04-18',
20=>'2017-04-19',21=>'2017-04-20',22=>'2017-04-21',23=>'2017-04-22',
24=>'2017-04-23',25=>'2017-04-24',26=>'2017-04-25',27=>'2017-04-26',
28=>'2017-04-27',29=>'2017-04-28',30=>'2017-04-29',31=>'2017-04-30');
$search=fillDateRange('2017-02-15','2017-05-07'); // pre-validated user input
// remove all dates from $search where exist in $booked...
$vacant=array_diff($search,$booked);
// group consecutive days
$date_checker=date("Y-m-d",strtotime("{$vacant[0]} -1 day"));
$x=0;
foreach($vacant as $date){
if($date!=date("Y-m-d",strtotime("$date_checker +1 day"))){++$x;}
$grouped[$x][]="$date";
$date_checker=$date;
}
echo "Array of vacant date ranges:";
foreach($grouped as $group){
$vacant_ranges[]=current($group)." to ".end($group);
}
echo "<pre>";
var_export($vacant_ranges);
echo "</pre>";
//echo "Array of arrays containing consecutive days:";
/*foreach($grouped as $group){
$vacant_arrays[current($group)." to ".end($group)]=$group;
}
echo "<pre>";
var_export($vacant_arrays);
echo "</pre>";*/
Output: 输出:
Array of vacant date ranges:
array (
0 => '2017-02-15 to 2017-02-23',
1 => '2017-02-25 to 2017-03-31',
2 => '2017-05-01 to 2017-05-07',
)
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.