How to elegantly modify the key value when traversing an array-php Tutorial

{Code ...} how to add the $ start value to the key value in the array during traversal because ajax loads comments now, therefore, the floors in the html code passed to the front-end are from 1 to 5. when I want to make the second request, the number of floors is 6, 7, 8, 9, and 10. I saw that the two functions on the tag can only be set to values. reference...

$ Start = 6; $ list = ['first floor ', 'Second Floor', 'third floor ', 'fourth floor', 'fifth floor ',];

How to add the key value in the array during traversal$startValue

Because ajax loads comments, the floors in the html code sent to the front end are from 1 to 5.
The number of floors in the second request is 6, 7, 8, 9, and 10.

The two functions on the tag can only reference the value, but cannot reference the key. So is there any other way to handle it. Noforeach.

PS: What I think of now is to usearray_keysAfter all the keys are obtained and processed, they are merged with the original array.

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$ Start = 6; $ list = ['first floor ', 'Second Floor', 'third floor ', 'fourth floor', 'fifth floor ',];

How to add the key value in the array during traversal$startValue

Because ajax loads comments, the floors in the html code sent to the front end are from 1 to 5.
The number of floors in the second request is 6, 7, 8, 9, and 10.

The two functions on the tag can only reference the value, but cannot reference the key. So is there any other way to handle it. Noforeach.

PS: What I think of now is to usearray_keysAfter all the keys are obtained and processed, they are merged with the original array.

$list = array_flip( array_map(function($key) use ($start) { return $start + (int)$key; }, array_flip($list)) );

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$key_list = range($start, $start + count($list) - 1);$list     = array_combine($key_list, $list);