3v4l.org

run code in 300+ PHP versions simultaneously
<?php /* Challenge 3: Use reflection to get access to Question::$answer from $e->getAnswer */ class Question { private $answer = 42; public function __construct($e) { try { throw $e; } catch (Exception $e) { echo $e->getAnswer($this) . PHP_EOL; } } } // start editing here class exceptionFun extends Exception { public function getAnswer($that) { $cl1 = static function() { return Question::$answer; }; //$getTheAnswer = Closure::bind($this->getPrivate(),$that); $getTheAnswer = Closure::bind($cl1, null, $that); $result = $getTheAnswer($that); return $result; } public function getPrivate($that) { return $that->answer; } } $e = new exceptionFun(); // end editing here new Question($e);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/28JJd
function name:  (null)
number of ops:  8
compiled vars:  !0 = $e
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   52     0  E >   NEW                                              $1      'exceptionFun'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   56     3        NEW                                              $4      'Question'
          4        SEND_VAR_EX                                              !0
          5        DO_FCALL                                      0          
          6        FREE                                                     $4
          7      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2F28JJd%3A29%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/28JJd
function name:  {closure}
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   31     0  E >   FETCH_STATIC_PROP_R          unknown             ~0      'answer'
          1      > RETURN                                                   ~0
   32     2*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2F28JJd%3A29%240

Class Question:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 108) Position 1 = -2
Found catch point at position: 3
Branch analysis from position: 3
2 jumps found. (Code = 107) Position 1 = 4, Position 2 = -2
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/28JJd
function name:  __construct
number of ops:  11
compiled vars:  !0 = $e
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   RECV                                             !0      
   14     1      > THROW                                         0          !0
          2*       JMP                                                      ->10
   15     3  E > > CATCH                                       last         'Exception'
   16     4    >   INIT_METHOD_CALL                                         !0, 'getAnswer'
          5        FETCH_THIS                                       $1      
          6        SEND_VAR_EX                                              $1
          7        DO_FCALL                                      0  $2      
          8        CONCAT                                           ~3      $2, '%0A'
          9        ECHO                                                     ~3
   18    10      > RETURN                                                   null

End of function __construct

End of class Question.

Class exceptionFun:
Function getanswer:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/28JJd
function name:  getAnswer
number of ops:  15
compiled vars:  !0 = $that, !1 = $cl1, !2 = $getTheAnswer, !3 = $result
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   27     0  E >   RECV                                             !0      
   29     1        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2F28JJd%3A29%240'
          2        ASSIGN                                                   !1, ~4
   36     3        INIT_STATIC_METHOD_CALL                                  'Closure', 'bind'
          4        SEND_VAR                                                 !1
          5        SEND_VAL                                                 null
          6        SEND_VAR                                                 !0
          7        DO_FCALL                                      0  $6      
          8        ASSIGN                                                   !2, $6
   38     9        INIT_DYNAMIC_CALL                                        !2
         10        SEND_VAR_EX                                              !0
         11        DO_FCALL                                      0  $8      
         12        ASSIGN                                                   !3, $8
   39    13      > RETURN                                                   !3
   41    14*     > RETURN                                                   null

End of function getanswer

Function getprivate:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/28JJd
function name:  getPrivate
number of ops:  4
compiled vars:  !0 = $that
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   45     0  E >   RECV                                             !0      
   47     1        FETCH_OBJ_R                                      ~1      !0, 'answer'
          2      > RETURN                                                   ~1
   48     3*     > RETURN                                                   null

End of function getprivate

End of class exceptionFun.

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
151.78 ms | 1399 KiB | 13 Q