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<?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) { // Closure::bind() actually creates a new instance of the closure $answerTime = Closure::bind($this->getAnswer2($that), null, $that); var_dump($answerTime); } public function getAnswer2($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/j4rao
function name:  (null)
number of ops:  8
compiled vars:  !0 = $e
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   54     0  E >   NEW                                              $1      'exceptionFun'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   58     3        NEW                                              $4      'Question'
          4        SEND_VAR_EX                                              !0
          5        DO_FCALL                                      0          
          6        FREE                                                     $4
          7      > RETURN                                                   1

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/j4rao
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/j4rao
function name:  getAnswer
number of ops:  14
compiled vars:  !0 = $that, !1 = $answerTime
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   29     0  E >   RECV                                             !0      
   35     1        INIT_STATIC_METHOD_CALL                                  'Closure', 'bind'
          2        INIT_METHOD_CALL                                         'getAnswer2'
          3        SEND_VAR_EX                                              !0
          4        DO_FCALL                                      0  $2      
          5        SEND_VAR                                                 $2
          6        SEND_VAL                                                 null
          7        SEND_VAR                                                 !0
          8        DO_FCALL                                      0  $3      
          9        ASSIGN                                                   !1, $3
   37    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !1
         12        DO_ICALL                                                 
   40    13      > RETURN                                                   null

End of function getanswer

Function getanswer2:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/j4rao
function name:  getAnswer2
number of ops:  4
compiled vars:  !0 = $that
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   42     0  E >   RECV                                             !0      
   44     1        FETCH_OBJ_R                                      ~1      !0, 'answer'
          2      > RETURN                                                   ~1
   45     3*     > RETURN                                                   null

End of function getanswer2

End of class exceptionFun.

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