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<?php class Foo { static public function isFoo() { return $this instanceof Foo; } } class Bar { public function doSomething() { return Foo::isFoo(); } } $bar = new Bar; var_dump($bar->doSomething());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/khW9Q
function name:  (null)
number of ops:  9
compiled vars:  !0 = $bar
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  18     0  E >   NEW                                              $1      :13
         1        DO_FCALL                                      0          
         2        QM_ASSIGN                                                !0
  19     3        INIT_FCALL                                               'var_dump'
         4        INIT_METHOD_CALL                                         !0, 'doSomething'
         5        DO_FCALL                                      0  $4      
         6        SEND_VAR                                                 $4
         7        DO_ICALL                                                 
         8      > RETURN                                                   1

Class Foo:
Function isfoo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/khW9Q
function name:  isFoo
number of ops:  4
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   6     0  E >   FETCH_THIS                                       ~0      
         1        INSTANCEOF                                       ~1      ~0, 'Foo'
         2      > RETURN                                                   ~1
   7     3*     > RETURN                                                   null

End of function isfoo

End of class Foo.

Class Bar:
Function dosomething:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/khW9Q
function name:  doSomething
number of ops:  4
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  14     0  E >   INIT_STATIC_METHOD_CALL                                  'Foo', 'isFoo'
         1        DO_FCALL                                      0  $0      
         2      > RETURN                                                   $0
  15     3*     > RETURN                                                   null

End of function dosomething

End of class Bar.

Generated using Vulcan Logic Dumper, using php 7.4.0