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@ 2022-05-13T04:55:16Z

<?php

$board = [
    ['a', 'b', 'c'],
    ['d', 'e', 'f'],
    ['g', 'h', 'i'],
];
/*
$flatBoxes = [];

$boxIndexes = [0, 3, 6];
$boardLength = count($board[0]);
$boxRows = [];
for($start = 0; $start < $boardLength; $start += 3) {
    for($row = 0; $row < $boardLength; $row += 1) {
        $boxWidth = 3;
        $boxRow = array_slice($board[$row], $start, $boxWidth);
        $boxRows[] = $boxRow;
    }
}

$boxesList = [];
for($start = 0; $start < count($boxRows); $start += 3) {
    $end = 3;
    $box = array_slice($boxRows, $start, $end);
    $boxesList[] = $box;
}

$boxes = [];
for($boxIndex = 0; $boxIndex < count($boxesList); $boxIndex += 1) {
    $boxList = $boxesList[$boxIndex];
    $row = [];
    for($box = 0; $box < count($boxList); $box += 1) {
        $choosenBox = $boxList[$box];
        for($index = 0; $index < count($choosenBox); $index += 1) {
            $digit = $choosenBox[$index];
            array_push($row, $digit);
        }
    }
    array_push($boxes, $row);
}*/
var_export([array_merge(...$board)]);

Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Vg7LD
function name:  (null)
number of ops:  10
compiled vars:  !0 = $board
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   42     1        INIT_FCALL                                               'var_export'
          2        INIT_FCALL                                               'array_merge'
          3        SEND_UNPACK                                              !0
          4        CHECK_UNDEF_ARGS                                         
          5        DO_ICALL                                         $2      
          6        INIT_ARRAY                                       ~3      $2
          7        SEND_VAL                                                 ~3
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0

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138.45 ms | 999 KiB | 15 Q