I'd like to combine some arrays with others to create a new array, but it doesn't work.

Array of specific days of the month (November) and
There is an array of fruits to assign by day of the week.
I'd like to use this to insert a specific array into the appropriate day of the week, but for some reason it stops at 23...
I don't know why.

(We will also implement a restricted implementation in the next week, every second week.)


$fruitArray=array(
            'tue' = > 'banana',
            'fri' = > 'apple',
            'sat' = > 'orange',
          );



$dayArray=
 array(
  1 = > 'tue',
  2 = > 'wed',
  4 = > 'fri',
  5 = > 'sat',
  7 = > 'mon',
  8 = > 'tue',
  9 = > 'wed',
  10 = > 'thu',
  11 = > 'fri',
  12 = > 'sat',
  14 = > 'mon',
  15 = > 'tue',
  16 = > 'wed',
  17=>'thu',
  18=>'fri',
  19 = > 'sat',
  21 = > 'mon',
  22 = > 'tue',
  24 = > 'thu',
  25 = > 'fri',
  26 = > 'sat',
  28 = > 'mon',
  29 = > 'tue',
  30 = > 'wed',
)

foreach($dayArray as$day){
          if(isset($fruitArray[$day])){
            $result[] = [$day, $fruitArray[$day]];
          } else{
            $result[] = [$day, null];
          }
        }

The result stops at 23 for some reason.

array(
  0 = > 
  array(
    0 = > 'tue',
    1 = > 'banana',
  ),
  1 = > 
  array(
    0 = > 'wed',
    1 = >',
  ),
  2 = > 
  array(
    0 = > 'fri',
    1=>'apple',
  ),
  3=> 
  array(
    0 = > 'sat',
    1 = > 'orange',
  ),
  4 = > 
  array(
    0 = > 'mon',
    1 = >',
  ),
  5=> 
  array(
    0 = > 'tue',
    1 = > 'banana',
  ),
  6 = > 
  array(
    0 = > 'wed',
    1 = >',
  ),
  7 = > 
  array(
    0 = > 'thu',
    1 = >',
  ),
  8=> 
  array(
    0 = > 'fri',
    1=>'apple',
  ),
  9=> 
  array(
    0 = > 'sat',
    1 = > 'orange',
  ),
  10 = > 
  array(
    0 = > 'mon',
    1 = >',
  ),
  11 = > 
  array(
    0 = > 'tue',
    1 = > 'banana',
  ),
  12 = > 
  array(
    0 = > 'wed',
    1 = >',
  ),
  13=> 
  array(
    0 = > 'thu',
    1 = >',
  ),
  14 = > 
  array(
    0 = > 'fri',
    1=>'apple',
  ),
  15 = > 
  array(
    0 = > 'sat',
    1 = > 'orange',
  ),
  16 = > 
  array(
    0 = > 'mon',
    1 = >',
  ),
  17=> 
  array(
    0 = > 'tue',
    1 = > 'banana',
  ),
  18=> 
  array(
    0 = > 'thu',
    1 = >',
  ),
  19=> 
  array(
    0 = > 'fri',
    1=>'apple',
  ),
  20=> 
  array(
    0 = > 'sat',
    1 = > 'orange',
  ),
  21 = > 
  array(
    0 = > 'mon',
    1 = >',
  ),
  22 = > 
  array(
    0 = > 'tue',
    1 = > 'banana',
  ),
  23 = > 
  array(
    0 = > 'wed',
    1 = >',
  ),
)

php

2022-09-30 12:05

3 Answers

Normal operation.
If no key is specified for the array, consecutive numbers are re-numbered from 0.
$dayArray has only 24 elements registered, so the number is up to 23.
If you want to keep the array key, you can specify the array key as follows:

foreach($dayArray as$key=>$day){
          if(isset($fruitArray[$day])){
            $result[$key]=[$day,$fruitArray[$day]];
          } else{
            $result [$key] = [$day, null];
          }
        }

I hope it will be helpful.

2022-09-30 12:05

For your information, if it's a one-dimensional array of string data only, you can replace it with str_replace.

$dayArray=
  array(
    1 = > 'tue',
    2 = > 'wed',
    4 = > 'fri',
    5 = > 'sat',
    7 = > 'mon',
    8 = > 'tue',
    9 = > 'wed',
    10 = > 'thu',
    11 = > 'fri',
    12 = > 'sat',
    14 = > 'mon',
    15 = > 'tue',
    16 = > 'wed',
    17=>'thu',
    18=>'fri',
    19 = > 'sat',
    21 = > 'mon',
    22 = > 'tue',
    24 = > 'thu',
    25 = > 'fri',
    26 = > 'sat',
    28 = > 'mon',
    29 = > 'tue',
    30 = > 'wed',
  );

$new_array=str_replace(array('tue', 'fri', 'sat'), array('banana', 'apple', 'orange'), $dayArray);
$new_array=str_replace(array('mon', 'wed', 'thu', 'sun'), ', $new_array);
print_r($new_array);

2022-09-30 12:05

$result=array_map(fn($v)=>[$v,$fruitArray[$v]?null],$dayArray);

2022-09-30 12:05

If you have any answers or tips

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