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<?php interface A {} class B implements A {} class C {} class D extends C {} var_dump(in_array(A::class, class_implements(A::class))); var_dump(in_array(A::class, class_implements(B::class))); var_dump(in_array(A::class, class_implements(C::class))); var_dump(in_array(C::class, class_implements(D::class))); echo PHP_EOL; var_dump(is_a(A::class, A::class, true)); var_dump(is_a(B::class, A::class, true)); var_dump(is_a(C::class, A::class, true)); var_dump(is_a(D::class, C::class, true)); echo PHP_EOL; var_dump(is_subclass_of(A::class, A::class, true)); var_dump(is_subclass_of(B::class, A::class, true)); var_dump(is_subclass_of(C::class, A::class, true)); var_dump(is_subclass_of(D::class, C::class, true));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WDt9u
function name:  (null)
number of ops:  108
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   DECLARE_CLASS                                            'b'
    8     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'in_array'
          3        SEND_VAL                                                 'A'
          4        INIT_FCALL                                               'class_implements'
          5        SEND_VAL                                                 'A'
          6        DO_ICALL                                         $0      
          7        SEND_VAR                                                 $0
          8        DO_ICALL                                         $1      
          9        SEND_VAR                                                 $1
         10        DO_ICALL                                                 
    9    11        INIT_FCALL                                               'var_dump'
         12        INIT_FCALL                                               'in_array'
         13        SEND_VAL                                                 'A'
         14        INIT_FCALL                                               'class_implements'
         15        SEND_VAL                                                 'B'
         16        DO_ICALL                                         $3      
         17        SEND_VAR                                                 $3
         18        DO_ICALL                                         $4      
         19        SEND_VAR                                                 $4
         20        DO_ICALL                                                 
   10    21        INIT_FCALL                                               'var_dump'
         22        INIT_FCALL                                               'in_array'
         23        SEND_VAL                                                 'A'
         24        INIT_FCALL                                               'class_implements'
         25        SEND_VAL                                                 'C'
         26        DO_ICALL                                         $6      
         27        SEND_VAR                                                 $6
         28        DO_ICALL                                         $7      
         29        SEND_VAR                                                 $7
         30        DO_ICALL                                                 
   11    31        INIT_FCALL                                               'var_dump'
         32        INIT_FCALL                                               'in_array'
         33        SEND_VAL                                                 'C'
         34        INIT_FCALL                                               'class_implements'
         35        SEND_VAL                                                 'D'
         36        DO_ICALL                                         $9      
         37        SEND_VAR                                                 $9
         38        DO_ICALL                                         $10     
         39        SEND_VAR                                                 $10
         40        DO_ICALL                                                 
   13    41        ECHO                                                     '%0A'
   15    42        INIT_FCALL                                               'var_dump'
         43        INIT_FCALL                                               'is_a'
         44        SEND_VAL                                                 'A'
         45        SEND_VAL                                                 'A'
         46        SEND_VAL                                                 <true>
         47        DO_ICALL                                         $12     
         48        SEND_VAR                                                 $12
         49        DO_ICALL                                                 
   16    50        INIT_FCALL                                               'var_dump'
         51        INIT_FCALL                                               'is_a'
         52        SEND_VAL                                                 'B'
         53        SEND_VAL                                                 'A'
         54        SEND_VAL                                                 <true>
         55        DO_ICALL                                         $14     
         56        SEND_VAR                                                 $14
         57        DO_ICALL                                                 
   17    58        INIT_FCALL                                               'var_dump'
         59        INIT_FCALL                                               'is_a'
         60        SEND_VAL                                                 'C'
         61        SEND_VAL                                                 'A'
         62        SEND_VAL                                                 <true>
         63        DO_ICALL                                         $16     
         64        SEND_VAR                                                 $16
         65        DO_ICALL                                                 
   18    66        INIT_FCALL                                               'var_dump'
         67        INIT_FCALL                                               'is_a'
         68        SEND_VAL                                                 'D'
         69        SEND_VAL                                                 'C'
         70        SEND_VAL                                                 <true>
         71        DO_ICALL                                         $18     
         72        SEND_VAR                                                 $18
         73        DO_ICALL                                                 
   20    74        ECHO                                                     '%0A'
   22    75        INIT_FCALL                                               'var_dump'
         76        INIT_FCALL                                               'is_subclass_of'
         77        SEND_VAL                                                 'A'
         78        SEND_VAL                                                 'A'
         79        SEND_VAL                                                 <true>
         80        DO_ICALL                                         $20     
         81        SEND_VAR                                                 $20
         82        DO_ICALL                                                 
   23    83        INIT_FCALL                                               'var_dump'
         84        INIT_FCALL                                               'is_subclass_of'
         85        SEND_VAL                                                 'B'
         86        SEND_VAL                                                 'A'
         87        SEND_VAL                                                 <true>
         88        DO_ICALL                                         $22     
         89        SEND_VAR                                                 $22
         90        DO_ICALL                                                 
   24    91        INIT_FCALL                                               'var_dump'
         92        INIT_FCALL                                               'is_subclass_of'
         93        SEND_VAL                                                 'C'
         94        SEND_VAL                                                 'A'
         95        SEND_VAL                                                 <true>
         96        DO_ICALL                                         $24     
         97        SEND_VAR                                                 $24
         98        DO_ICALL                                                 
   25    99        INIT_FCALL                                               'var_dump'
        100        INIT_FCALL                                               'is_subclass_of'
        101        SEND_VAL                                                 'D'
        102        SEND_VAL                                                 'C'
        103        SEND_VAL                                                 <true>
        104        DO_ICALL                                         $26     
        105        SEND_VAR                                                 $26
        106        DO_ICALL                                                 
        107      > RETURN                                                   1

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

Generated using Vulcan Logic Dumper, using php 8.0.0


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139.12 ms | 1011 KiB | 18 Q