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<?php class Foo {} class Bar {} function test($value) { var_dump(match (true) { $value instanceof Foo => 'Foo', $value instanceof Bar => 'Bar', }); } test(new Foo()); test(new Bar());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/stkDM
function name:  (null)
number of ops:  11
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   13     0  E >   INIT_FCALL                                                   'test'
          1        NEW                                                  $0      'Foo'
          2        DO_FCALL                                          0          
          3        SEND_VAR                                                     $0
          4        DO_FCALL                                          0          
   14     5        INIT_FCALL                                                   'test'
          6        NEW                                                  $3      'Bar'
          7        DO_FCALL                                          0          
          8        SEND_VAR                                                     $3
          9        DO_FCALL                                          0          
         10      > RETURN                                                       1

Function test:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 44) Position 1 = 5, Position 2 = 10
Branch analysis from position: 5
2 jumps found. (Code = 44) Position 1 = 8, Position 2 = 12
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 197) Position 1 = -2
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 10
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
filename:       /in/stkDM
function name:  test
number of ops:  17
compiled vars:  !0 = $value
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    6     0  E >   RECV                                                 !0      
    7     1        INIT_FCALL                                                   'var_dump'
    8     2        INSTANCEOF                                           ~2      !0, 'Foo'
          3        IS_IDENTICAL                                                 ~2, <true>
          4      > JMPNZ                                                        ~1, ->10
    9     5    >   INSTANCEOF                                           ~3      !0, 'Bar'
          6        IS_IDENTICAL                                                 ~3, <true>
          7      > JMPNZ                                                        ~1, ->12
          8    > > JMP                                                          ->9
          9    > > MATCH_ERROR                                                  <true>
    8    10    >   QM_ASSIGN                                            ~4      'Foo'
         11      > JMP                                                          ->14
    9    12    >   QM_ASSIGN                                            ~4      'Bar'
         13      > JMP                                                          ->14
         14    >   SEND_VAL                                                     ~4
    7    15        DO_ICALL                                                     
   11    16      > RETURN                                                       null

End of function test

Class Foo: [no user functions]
Class Bar: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.5.0


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