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<?php trait MyInterface {} class MyClass { use MyInterface; } // This will fail on 5.3.8 and earlier, this has been fixed // in #53727, but doc does not reflect that. echo (is_subclass_of('MyInterface', 'MyClass') ? 'true' : 'false');
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KuneR
function name:  (null)
number of ops:  11
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_CLASS                                            'myclass'
    8     1        INIT_FCALL                                               'is_subclass_of'
          2        SEND_VAL                                                 'MyInterface'
          3        SEND_VAL                                                 'MyClass'
          4        DO_ICALL                                         $0      
          5      > JMPZ                                                     $0, ->8
          6    >   QM_ASSIGN                                        ~1      'true'
          7      > JMP                                                      ->9
          8    >   QM_ASSIGN                                        ~1      'false'
          9    >   ECHO                                                     ~1
         10      > RETURN                                                   1

Class MyInterface: [no user functions]
Class MyClass: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


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