3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface MyInterface { } class BaseClass implements MyInterface{ } class MyClass extends BaseClass{ } $object = new MyClass(); echo @is_subclass_of('BaseClass', 'BaseClass')? "Yes ":"No "; echo @is_subclass_of('MyClass', 'BaseClass')? "Yes ":"No "; echo @is_subclass_of('MyClass', 'MyInterface')? "Yes ":"No "; echo "\n"; echo @is_subclass_of($object, 'BaseClass')? "Yes\n":"No\n"; echo @is_subclass_of($object, 'MyInterface')? "Yes\n":"No\n";
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 12, Position 2 = 14
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
2 jumps found. (Code = 43) Position 1 = 23, Position 2 = 25
Branch analysis from position: 23
1 jumps found. (Code = 42) Position 1 = 26
Branch analysis from position: 26
2 jumps found. (Code = 43) Position 1 = 34, Position 2 = 36
Branch analysis from position: 34
1 jumps found. (Code = 42) Position 1 = 37
Branch analysis from position: 37
2 jumps found. (Code = 43) Position 1 = 46, Position 2 = 48
Branch analysis from position: 46
1 jumps found. (Code = 42) Position 1 = 49
Branch analysis from position: 49
2 jumps found. (Code = 43) Position 1 = 57, Position 2 = 59
Branch analysis from position: 57
1 jumps found. (Code = 42) Position 1 = 60
Branch analysis from position: 60
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 59
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 48
2 jumps found. (Code = 43) Position 1 = 57, Position 2 = 59
Branch analysis from position: 57
Branch analysis from position: 59
Branch analysis from position: 36
2 jumps found. (Code = 43) Position 1 = 46, Position 2 = 48
Branch analysis from position: 46
Branch analysis from position: 48
Branch analysis from position: 25
2 jumps found. (Code = 43) Position 1 = 34, Position 2 = 36
Branch analysis from position: 34
Branch analysis from position: 36
Branch analysis from position: 14
2 jumps found. (Code = 43) Position 1 = 23, Position 2 = 25
Branch analysis from position: 23
Branch analysis from position: 25
filename:       /in/GJiMT
function name:  (null)
number of ops:  62
compiled vars:  !0 = $object
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   DECLARE_CLASS                                            'baseclass'
    9     1        DECLARE_CLASS                                            'myclass', 'baseclass'
   12     2        NEW                                              $1      'MyClass'
          3        DO_FCALL                                      0          
          4        ASSIGN                                                   !0, $1
   13     5        BEGIN_SILENCE                                    ~4      
          6        INIT_FCALL                                               'is_subclass_of'
          7        SEND_VAL                                                 'BaseClass'
          8        SEND_VAL                                                 'BaseClass'
          9        DO_ICALL                                         $5      
         10        END_SILENCE                                              ~4
         11      > JMPZ                                                     $5, ->14
         12    >   QM_ASSIGN                                        ~6      'Yes+'
         13      > JMP                                                      ->15
         14    >   QM_ASSIGN                                        ~6      'No+'
         15    >   ECHO                                                     ~6
   14    16        BEGIN_SILENCE                                    ~7      
         17        INIT_FCALL                                               'is_subclass_of'
         18        SEND_VAL                                                 'MyClass'
         19        SEND_VAL                                                 'BaseClass'
         20        DO_ICALL                                         $8      
         21        END_SILENCE                                              ~7
         22      > JMPZ                                                     $8, ->25
         23    >   QM_ASSIGN                                        ~9      'Yes+'
         24      > JMP                                                      ->26
         25    >   QM_ASSIGN                                        ~9      'No+'
         26    >   ECHO                                                     ~9
   15    27        BEGIN_SILENCE                                    ~10     
         28        INIT_FCALL                                               'is_subclass_of'
         29        SEND_VAL                                                 'MyClass'
         30        SEND_VAL                                                 'MyInterface'
         31        DO_ICALL                                         $11     
         32        END_SILENCE                                              ~10
         33      > JMPZ                                                     $11, ->36
         34    >   QM_ASSIGN                                        ~12     'Yes+'
         35      > JMP                                                      ->37
         36    >   QM_ASSIGN                                        ~12     'No+'
         37    >   ECHO                                                     ~12
   16    38        ECHO                                                     '%0A'
   17    39        BEGIN_SILENCE                                    ~13     
         40        INIT_FCALL                                               'is_subclass_of'
         41        SEND_VAR                                                 !0
         42        SEND_VAL                                                 'BaseClass'
         43        DO_ICALL                                         $14     
         44        END_SILENCE                                              ~13
         45      > JMPZ                                                     $14, ->48
         46    >   QM_ASSIGN                                        ~15     'Yes%0A'
         47      > JMP                                                      ->49
         48    >   QM_ASSIGN                                        ~15     'No%0A'
         49    >   ECHO                                                     ~15
   18    50        BEGIN_SILENCE                                    ~16     
         51        INIT_FCALL                                               'is_subclass_of'
         52        SEND_VAR                                                 !0
         53        SEND_VAL                                                 'MyInterface'
         54        DO_ICALL                                         $17     
         55        END_SILENCE                                              ~16
         56      > JMPZ                                                     $17, ->59
         57    >   QM_ASSIGN                                        ~18     'Yes%0A'
         58      > JMP                                                      ->60
         59    >   QM_ASSIGN                                        ~18     'No%0A'
         60    >   ECHO                                                     ~18
         61      > RETURN                                                   1

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

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
162.6 ms | 1400 KiB | 15 Q