回答編集履歴
3
調整
answer
CHANGED
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@@ -52,4 +52,38 @@
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52
52
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return $x>=$start and $x<=$end;
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53
53
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});
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54
54
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print_r($list);
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55
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-
```
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55
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+
```
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56
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+
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57
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+
# 第n週のx曜日
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58
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```PHP
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59
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$start="2019-01-01";
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60
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$end ="2019-12-31";
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61
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$d_start =strtotime($start." first day of 0 month");
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62
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$d_end =strtotime($end." first day of 1 month");
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63
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$day_of_week=["sunday","monday","tueday","wednesday","thuesday","friday","saturday"];
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64
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$target=[["sunday",6]];
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65
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$list=[];
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66
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$d=$d_start;
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67
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$c=0;
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68
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while($d<$d_end){
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69
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$w=(date("w",$d));
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70
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foreach($target as $val){
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71
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$offset=array_search($val[0],$day_of_week)<$w?1:0;
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72
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$day=date("Y-m-d",strtotime(date("Y-m-d",$d).sprintf(" first %s of 0 month +%d week",$val[0],$val[1]-1-$offset)));
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73
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+
if(date("Y-m",$d)==substr($day,0,7)) $list[]=$day;
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74
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}
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75
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$d=strtotime(date("Y-m-d",$d)." + 1 month");
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76
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}
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77
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sort($list);
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78
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$list=array_filter($list,function($x) use($start,$end){
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79
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return $x>=$start and $x<=$end;
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80
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});
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81
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print_r($list);
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82
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+
```
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83
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+
上記で
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84
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```PHP
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85
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$start="2018-01-01";
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86
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$end ="2050-07-25";
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87
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$target=[["monday",1],["tuesday",2],["thursday",3]];
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88
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+
```
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89
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+
とすれば最初の命題にも合致すると思います
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2
tuiki
answer
CHANGED
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@@ -23,4 +23,33 @@
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23
23
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});
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24
24
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print_r($list);
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25
25
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26
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```
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27
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+
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28
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# 追記
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29
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+
任意の曜日とn番目を指定
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30
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```PHP
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31
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$start="2018-01-01";
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32
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$end ="2050-07-25";
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33
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+
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34
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$d_start =strtotime($start." first day of 0 month");
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35
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$d_end =strtotime($end." first day of 1 month");
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36
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+
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37
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$target=[["monday",1],["tuesday",2],["thursday",3]];
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38
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//上記、第1月曜、第2火曜、第3木曜
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39
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+
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40
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$list=[];
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41
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$d=$d_start;
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42
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$c=0;
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43
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+
while($d<$d_end){
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44
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foreach($target as $val){
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45
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$list[]=date("Y-m-d",strtotime(date("Y-m-d",$d).sprintf(" first %s of 0 month +%d week",$val[0],$val[1]-1)));
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46
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+
}
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47
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+
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48
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+
$d=strtotime(date("Y-m-d",$d)." + 1 month");
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49
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}
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50
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+
sort($list);
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51
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+
$list=array_filter($list,function($x) use($start,$end){
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52
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+
return $x>=$start and $x<=$end;
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53
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+
});
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54
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+
print_r($list);
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26
55
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```
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1
chousei
answer
CHANGED
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@@ -8,10 +8,8 @@
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8
8
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$d_start =strtotime($start." first day of 0 month");
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9
9
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$d_end =strtotime($end." first day of 1 month");
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10
10
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11
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-
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12
11
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$list=[];
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13
12
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$d=$d_start;
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14
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-
$c=0;
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15
13
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while($d<$d_end){
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16
14
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$list[]=date("Y-m-d",strtotime(date("Y-m-d",$d)." first tuesday of 0 month +1 week"));
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17
15
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$list[]=date("Y-m-d",strtotime(date("Y-m-d",$d)." first tuesday of 0 month +3 week"));
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