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<?php $arrayFirst = [ "index" => [ 'a' => '1', ], [ 'a' => '2', ] ]; $arraySecond = [ "index" => [ 'b' => '1', ], [ 'b' => '2', ] ]; foreach ($arrayFirst as $k => &$row) { $row = array_merge($row, $arraySecond[$k]); } var_export($arrayFirst);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 125) Position 1 = 3, Position 2 = 12
Branch analysis from position: 3
2 jumps found. (Code = 126) Position 1 = 4, Position 2 = 12
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
filename:       /in/hifIr
function name:  (null)
number of ops:  17
compiled vars:  !0 = $arrayFirst, !1 = $arraySecond, !2 = $row, !3 = $k
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   11     1        ASSIGN                                                   !1, <array>
   20     2      > FE_RESET_RW                                      $6      !0, ->12
          3    > > FE_FETCH_RW                                      ~7      $6, !2, ->12
          4    >   ASSIGN                                                   !3, ~7
   21     5        INIT_FCALL                                               'array_merge'
          6        SEND_VAR                                                 !2
          7        FETCH_DIM_R                                      ~9      !1, !3
          8        SEND_VAL                                                 ~9
          9        DO_ICALL                                         $10     
         10        ASSIGN                                                   !2, $10
   20    11      > JMP                                                      ->3
         12    >   FE_FREE                                                  $6
   23    13        INIT_FCALL                                               'var_export'
         14        SEND_VAR                                                 !0
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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