3v4l.org

run code in 300+ PHP versions simultaneously
<?php class C { function __toString(): string { return 'instance of C'; } } class D extends C { function __toString() /* should `: string` be implicit? */ { return 'instance of D'; } }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hTMvA
function name:  (null)
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   DECLARE_CLASS                                            'c'
    9     1        DECLARE_CLASS                                            'd', 'c'
   13     2      > RETURN                                                   1

Class C:
Function __tostring:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hTMvA
function name:  __toString
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E > > RETURN                                                   'instance+of+C'
    5     1*       VERIFY_RETURN_TYPE                                       
          2*     > RETURN                                                   null

End of function __tostring

End of class C.

Class D:
Function __tostring:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hTMvA
function name:  __toString
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E > > RETURN                                                   'instance+of+D'
   12     1*       VERIFY_RETURN_TYPE                                       
          2*     > RETURN                                                   null

End of function __tostring

End of class D.

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
138.97 ms | 1441 KiB | 13 Q