How do I use array_map recursively in PHP? - php

Question

I am attempting to convert an associative array to a 2D array to allow me to export it to Google Sheets. I've figured out a simplistic solution that works as follows:
$headers = $data["resultSets"][0]["headers"];
$rowSet0 = $data["resultSets"][0]["rowSet"][0];
$rowSet1 = $data["resultSets"][0]["rowSet"][1];
$hackresults = array_map(null, $headers, $rowSet0, $rowSet1);
This produces the following:
(
[0] => Array
(
[0] => SEASON_ID
[1] => 22017
[2] => 22017
)
[1] => Array
(
[0] => Player_ID
[1] => 203954
[2] => 203954
)
[2] => Array
(
[0] => Game_ID
[1] => 0021701118
[2] => 0021701105
)
[3] => Array
(
[0] => GAME_DATE
[1] => MAR 28, 2018
[2] => MAR 26, 2018
)
[4] => Array
(
[0] => MATCHUP
[1] => PHI vs. NYK
[2] => PHI vs. DEN
)
[5] => Array
(
[0] => WL
[1] => W
[2] => W
)
[6] => Array
(
[0] => MIN
[1] => 9
[2] => 27
)
[7] => Array
(
[0] => FGM
[1] => 2
[2] => 6
)
[8] => Array
(
[0] => FGA
[1] => 6
[2] => 12
)
[9] => Array
(
[0] => FG_PCT
[1] => 0.333
[2] => 0.5
)
[10] => Array
(
[0] => FG3M
[1] => 0
[2] => 0
)
[11] => Array
(
[0] => FG3A
[1] => 1
[2] => 1
)
[12] => Array
(
[0] => FG3_PCT
[1] => 0
[2] => 0
)
[13] => Array
(
[0] => FTM
[1] => 1
[2] => 8
)
[14] => Array
(
[0] => FTA
[1] => 2
[2] => 10
)
[15] => Array
(
[0] => FT_PCT
[1] => 0.5
[2] => 0.8
)
[16] => Array
(
[0] => OREB
[1] => 2
[2] => 1
)
[17] => Array
(
[0] => DREB
[1] => 1
[2] => 12
)
[18] => Array
(
[0] => REB
[1] => 3
[2] => 13
)
[19] => Array
(
[0] => AST
[1] => 0
[2] => 2
)
[20] => Array
(
[0] => STL
[1] => 0
[2] => 1
)
[21] => Array
(
[0] => BLK
[1] => 0
[2] => 2
)
[22] => Array
(
[0] => TOV
[1] => 1
[2] => 4
)
[23] => Array
(
[0] => PF
[1] => 1
[2] => 5
)
[24] => Array
(
[0] => PTS
[1] => 5
[2] => 20
)
[25] => Array
(
[0] => PLUS_MINUS
[1] => 7
[2] => 20
)
[26] => Array
(
[0] => VIDEO_AVAILABLE
[1] => 1
[2] => 1
)
)
This is the output I'm looking for, but there are 27 "rowSet"s, and it seems there must be a recursive way of performing this task.
I've looked at a number of custom array_map_recursive style functions but haven't had any success. Apologies and thanks in advance, I am a terrible novice coder!

Answer 1

You can use argument unpacking.
With the ... operator, you can use all the elements under $data["resultSets"][0]["rowSet"] as additional arguments to array_map.
$headers = $data["resultSets"][0]["headers"];
$rowSets = $data["resultSets"][0]["rowSet"];
$results = array_map(null, $headers, ...$rowSets);
(This isn't recursion, but I think it does what you're trying to do.)