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<?php $arr = ['foo' => 'bar']; $newArr = []; foreach (['foo', 'test'] as $key) { $arr[$key] ?? $newArr[] = $arr[$key]; } var_dump($newArr);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 12
Branch analysis from position: 3
2 jumps found. (Code = 78) 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/qmXCV
function name:  (null)
number of ops:  17
compiled vars:  !0 = $arr, !1 = $newArr, !2 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, <array>
    6     2      > FE_RESET_R                                       $5      <array>, ->12
          3    > > FE_FETCH_R                                               $5, !2, ->12
    7     4    >   FETCH_DIM_IS                                     ~6      !0, !2
          5        COALESCE                                         ~7      ~6
          6        FETCH_DIM_R                                      ~9      !0, !2
          7        ASSIGN_DIM                                       ~8      !1
          8        OP_DATA                                                  ~9
          9        QM_ASSIGN                                        ~7      ~8
         10        FREE                                                     ~7
    6    11      > JMP                                                      ->3
         12    >   FE_FREE                                                  $5
   10    13        INIT_FCALL                                               'var_dump'
         14        SEND_VAR                                                 !1
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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