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<?php class A {} class B extends A {} $c = new B(); var_dump(get_class($c) !== A::class); var_dump(! $c instanceof A);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7cbU6
function name:  (null)
number of ops:  14
compiled vars:  !0 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   NEW                                              $1      'B'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
    9     3        INIT_FCALL                                               'var_dump'
          4        GET_CLASS                                        ~4      !0
          5        IS_NOT_IDENTICAL                                 ~5      ~4, 'A'
          6        SEND_VAL                                                 ~5
          7        DO_ICALL                                                 
   10     8        INIT_FCALL                                               'var_dump'
          9        INSTANCEOF                                       ~7      !0, 'A'
         10        BOOL_NOT                                         ~8      ~7
         11        SEND_VAL                                                 ~8
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Class A: [no user functions]
Class B: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


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