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<?php $foo = new class { public function __set(string $name, $value) { throw new \Exception; } }; $foo->destructListener = new class { public function __destruct() {echo "bye"; debug_print_backtrace(); } }; unset($foo);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/oa121
function name:  (null)
number of ops:  11
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_ANON_CLASS                               <unknown> 
          1        NEW                                              $2      $1
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $2
    7     4        DECLARE_ANON_CLASS                               <const ast>   
          5        NEW                                              $7      $6
          6        DO_FCALL                                      0          
          7        ASSIGN_OBJ                                               !0, 'destructListener'
          8        OP_DATA                                                  $7
   11     9        UNSET_CV                                                 !0
         10      > RETURN                                                   1

Class class@anonymous:
Function __set:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 108) Position 1 = -2
filename:       /in/oa121
function name:  __set
number of ops:  6
compiled vars:  !0 = $name, !1 = $value
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        NEW                                              $2      'Exception'
          3        DO_FCALL                                      0          
          4      > THROW                                         0          $2
          5*     > RETURN                                                   null

End of function __set

End of class class@anonymous.

Class class@anonymous:
Function __destruct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/oa121
function name:  __destruct
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   ECHO                                                     'bye'
          1        INIT_FCALL                                               'debug_print_backtrace'
          2        DO_ICALL                                                 
          3      > RETURN                                                   null

End of function __destruct

End of class class@anonymous.

Generated using Vulcan Logic Dumper, using php 8.0.0


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