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<?php class Foo {} class Bar extends Foo {} var_dump(is_a('Foo', 'Bar')); var_dump(is_a('Bar', 'Foo')); var_dump(is_subclass_of('Foo', 'Bar')); var_dump(is_subclass_of('Bar', 'Foo'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/uJm4h
function name:  (null)
number of ops:  29
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'is_a'
          2        SEND_VAL                                                 'Foo'
          3        SEND_VAL                                                 'Bar'
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
    7     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'is_a'
          9        SEND_VAL                                                 'Bar'
         10        SEND_VAL                                                 'Foo'
         11        DO_ICALL                                         $2      
         12        SEND_VAR                                                 $2
         13        DO_ICALL                                                 
    8    14        INIT_FCALL                                               'var_dump'
         15        INIT_FCALL                                               'is_subclass_of'
         16        SEND_VAL                                                 'Foo'
         17        SEND_VAL                                                 'Bar'
         18        DO_ICALL                                         $4      
         19        SEND_VAR                                                 $4
         20        DO_ICALL                                                 
    9    21        INIT_FCALL                                               'var_dump'
         22        INIT_FCALL                                               'is_subclass_of'
         23        SEND_VAL                                                 'Bar'
         24        SEND_VAL                                                 'Foo'
         25        DO_ICALL                                         $6      
         26        SEND_VAR                                                 $6
         27        DO_ICALL                                                 
         28      > RETURN                                                   1

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

Generated using Vulcan Logic Dumper, using php 8.0.0


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