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<?php $lists = [ ['A', 'B', 'C', 'D', 'E'], ['A', 'B', 'C', 'D'], ['A', 'B', 'C', 'D', 'E', 'F'], ]; foreach ($lists as &$row) { $newRow = []; foreach ($row as $i => $v) { $newRow['Key' . $i + 1] = $v; } $row = $newRow; } var_export($lists);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 125) Position 1 = 2, Position 2 = 15
Branch analysis from position: 2
2 jumps found. (Code = 126) Position 1 = 3, Position 2 = 15
Branch analysis from position: 3
2 jumps found. (Code = 77) Position 1 = 5, Position 2 = 12
Branch analysis from position: 5
2 jumps found. (Code = 78) Position 1 = 6, Position 2 = 12
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 12
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
filename:       /in/sY1Fd
function name:  (null)
number of ops:  20
compiled vars:  !0 = $lists, !1 = $row, !2 = $newRow, !3 = $v, !4 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    9     1      > FE_RESET_RW                                      $6      !0, ->15
          2    > > FE_FETCH_RW                                              $6, !1, ->15
   10     3    >   ASSIGN                                                   !2, <array>
   11     4      > FE_RESET_R                                       $8      !1, ->12
          5    > > FE_FETCH_R                                       ~9      $8, !3, ->12
          6    >   ASSIGN                                                   !4, ~9
   12     7        ADD                                              ~11     !4, 1
          8        CONCAT                                           ~12     'Key', ~11
          9        ASSIGN_DIM                                               !2, ~12
         10        OP_DATA                                                  !3
   11    11      > JMP                                                      ->5
         12    >   FE_FREE                                                  $8
   14    13        ASSIGN                                                   !1, !2
    9    14      > JMP                                                      ->2
         15    >   FE_FREE                                                  $6
   16    16        INIT_FCALL                                               'var_export'
         17        SEND_VAR                                                 !0
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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