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<?php class A{} class B extends A{} interface I{ public function z1(A $var); public function z2(A $var); } class M implements I{ public function z1(B $var){} // doesnt work public function z2(A $var){ if($var instanceOf B) { // works (extra if+instanceOf needed) } } }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Il7R3
function name:  (null)
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   DECLARE_CLASS                                            'm'
   17     1      > RETURN                                                   1

Class A: [no user functions]
Class B: [no user functions]
Class I:
Function z1:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Il7R3
function name:  z1
number of ops:  2
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of function z1

Function z2:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Il7R3
function name:  z2
number of ops:  2
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of function z2

End of class I.

Class M:
Function z1:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Il7R3
function name:  z1
number of ops:  2
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   RECV                                             !0      
          1      > RETURN                                                   null

End of function z1

Function z2:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 3
Branch analysis from position: 3
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 3
filename:       /in/Il7R3
function name:  z2
number of ops:  4
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   RECV                                             !0      
   13     1        INSTANCEOF                                               !0, 'B'
          2      > JMPZ                                                     ~1, ->3
   16     3    > > RETURN                                                   null

End of function z2

End of class M.

Generated using Vulcan Logic Dumper, using php 8.0.0


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