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<?php interface B {} class A implements B {} class C extends A {} $a = new A; $c = new C; var_dump($c instanceof $a); var_dump($a instanceof $b); echo "C:\n"; var_dump($c instanceof C); var_dump($c instanceof A); var_dump($c instanceof B); echo "A:\n"; var_dump($a instanceof C); var_dump($a instanceof A); var_dump($a instanceof B);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/agKSC
function name:  (null)
number of ops:  45
compiled vars:  !0 = $a, !1 = $c, !2 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   DECLARE_CLASS                                            'a'
    6     1        DECLARE_CLASS                                            'c', 'a'
    7     2        NEW                                              $3      'A'
          3        DO_FCALL                                      0          
          4        ASSIGN                                                   !0, $3
    8     5        NEW                                              $6      'C'
          6        DO_FCALL                                      0          
          7        ASSIGN                                                   !1, $6
   10     8        INIT_FCALL                                               'var_dump'
          9        FETCH_CLASS                                   0  $9      !0
         10        INSTANCEOF                                       ~10     !1, $9
         11        SEND_VAL                                                 ~10
         12        DO_ICALL                                                 
   11    13        INIT_FCALL                                               'var_dump'
         14        FETCH_CLASS                                   0  $12     !2
         15        INSTANCEOF                                       ~13     !0, $12
         16        SEND_VAL                                                 ~13
         17        DO_ICALL                                                 
   12    18        ECHO                                                     'C%3A%0A'
   13    19        INIT_FCALL                                               'var_dump'
         20        INSTANCEOF                                       ~15     !1, 'C'
         21        SEND_VAL                                                 ~15
         22        DO_ICALL                                                 
   14    23        INIT_FCALL                                               'var_dump'
         24        INSTANCEOF                                       ~17     !1, 'A'
         25        SEND_VAL                                                 ~17
         26        DO_ICALL                                                 
   15    27        INIT_FCALL                                               'var_dump'
         28        INSTANCEOF                                       ~19     !1, 'B'
         29        SEND_VAL                                                 ~19
         30        DO_ICALL                                                 
   16    31        ECHO                                                     'A%3A%0A'
   17    32        INIT_FCALL                                               'var_dump'
         33        INSTANCEOF                                       ~21     !0, 'C'
         34        SEND_VAL                                                 ~21
         35        DO_ICALL                                                 
   18    36        INIT_FCALL                                               'var_dump'
         37        INSTANCEOF                                       ~23     !0, 'A'
         38        SEND_VAL                                                 ~23
         39        DO_ICALL                                                 
   19    40        INIT_FCALL                                               'var_dump'
         41        INSTANCEOF                                       ~25     !0, 'B'
         42        SEND_VAL                                                 ~25
         43        DO_ICALL                                                 
         44      > RETURN                                                   1

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

Generated using Vulcan Logic Dumper, using php 8.0.0


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