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<?php $array = [ [ 'FirstName' => 'Robin', 'Address' => 'Cave', 'LastName' => 'Mactimmy', 'Tel' => '9076', 'Email' => 'i@o.com', ], [ 'Address' => 'uytr', 'FirstName' => 'Bill', 'Email' => 'j@k.com', 'LastName' => 'Gates', 'Tel' => '7654', ], [ 'LastName' => 'Mahoney', 'Email' => 'y@i.ie', 'FirstName' => 'Tom', 'Tel' => '5689', 'Address' => 'kklll', ] ]; array_walk( $array, fn(&$row, $index, $order) => $row = array_merge($order, $row), array_flip(['FirstName', 'LastName', 'Address', 'Tel', 'Email']) ); var_export($array);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/aXjtH
function name:  (null)
number of ops:  14
compiled vars:  !0 = $array
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
   27     1        INIT_FCALL                                                   'array_walk'
   28     2        SEND_REF                                                     !0
   29     3        DECLARE_LAMBDA_FUNCTION                              ~2      [0]
          4        SEND_VAL                                                     ~2
   30     5        INIT_FCALL                                                   'array_flip'
          6        SEND_VAL                                                     <array>
          7        DO_ICALL                                             $3      
          8        SEND_VAR                                                     $3
   27     9        DO_ICALL                                                     
   32    10        INIT_FCALL                                                   'var_export'
         11        SEND_VAR                                                     !0
         12        DO_ICALL                                                     
         13      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/aXjtH
function name:  {closure:/in/aXjtH:29}
number of ops:  10
compiled vars:  !0 = $row, !1 = $index, !2 = $order
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   29     0  E >   RECV                                                 !0      
          1        RECV                                                 !1      
          2        RECV                                                 !2      
          3        INIT_FCALL                                                   'array_merge'
          4        SEND_VAR                                                     !2
          5        SEND_VAR                                                     !0
          6        DO_ICALL                                             $3      
          7        ASSIGN                                               ~4      !0, $3
          8      > RETURN                                                       ~4
          9*     > RETURN                                                       null

End of Dynamic Function 0

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