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<?php $array1 = ['A', 'B', 'C', 'D']; $array2 = [ ['name' => 'B', 'number' => 10], ['name' => 'D', 'number' => 20] ]; $lookup = array_column($array2, 'number', 'name'); var_export(array_map(fn($v) => $lookup[$v] ?? '', $array1));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5Usth
function name:  (null)
number of ops:  18
compiled vars:  !0 = $array1, !1 = $array2, !2 = $lookup
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, <array>
    9     2        INIT_FCALL                                               'array_column'
          3        SEND_VAR                                                 !1
          4        SEND_VAL                                                 'number'
          5        SEND_VAL                                                 'name'
          6        DO_ICALL                                         $5      
          7        ASSIGN                                                   !2, $5
   10     8        INIT_FCALL                                               'var_export'
          9        INIT_FCALL                                               'array_map'
         10        DECLARE_LAMBDA_FUNCTION                          ~7      [0]
         11        BIND_LEXICAL                                             ~7, !2
         12        SEND_VAL                                                 ~7
         13        SEND_VAR                                                 !0
         14        DO_ICALL                                         $8      
         15        SEND_VAR                                                 $8
         16        DO_ICALL                                                 
         17      > 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/5Usth
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $v, !1 = $lookup
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
          0  E >   RECV                                             !0      
          1        BIND_STATIC                                              !1
          2        FETCH_DIM_IS                                     ~2      !1, !0
          3        COALESCE                                         ~3      ~2
          4        QM_ASSIGN                                        ~3      ''
          5      > RETURN                                                   ~3
          6*     > RETURN                                                   null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.0.0


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