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<?php /** * @property stdClass $x * @property stdClass $y */ class C { private $buffer = array(); function __get($key) { if (array_key_exists($key, $this->buffer)) { return $this->buffer[$key]; } $f = 'calc_' . $key; return $this->buffer[$key] = $this->$f(); } function calc_x() { $x = new stdClass; $x->y = $this->y; return $x; } function calc_y() { $y = new stdClass; // Set a stub to avoid infinite recursion. $this->buffer['y'] = $y; $y->x = $this->x; return $y; } } $c = new C; $c->x; $c = new C; $c->y;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/00Kuv
function name:  (null)
number of ops:  11
compiled vars:  !0 = $c
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  33     0  E >   NEW                                              $1      :17
         1        DO_FCALL                                      0          
         2        QM_ASSIGN                                                !0
  34     3        FETCH_OBJ_R                                      ~4      !0, 'x'
         4        FREE                                                     ~4
  35     5        NEW                                              $5      :10
         6        DO_FCALL                                      0          
         7        QM_ASSIGN                                                !0
  36     8        FETCH_OBJ_R                                      ~8      !0, 'y'
         9        FREE                                                     ~8
        10      > RETURN                                                   1

Class C:
Function __get:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 7
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/00Kuv
function name:  __get
number of ops:  16
compiled vars:  !0 = $key, !1 = $f
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  10     0  E >   RECV                                             !0      
  11     1        FETCH_OBJ_R                                      ~2      'buffer'
         2        FUNC_NUM_ARGS                                    ~3      !0, ~2
         3      > JMPZ                                                     ~3, ->7
  12     4    >   FETCH_OBJ_R                                      ~4      'buffer'
         5        FETCH_DIM_R                                      ~5      ~4, !0
         6      > RETURN                                                   ~5
  14     7    >   CONCAT                                           ~6      'calc_', !0
         8        QM_ASSIGN                                                !1
  15     9        INIT_METHOD_CALL                                         !1
        10        DO_FCALL                                      0  $10     
        11        FETCH_OBJ_W                                      $8      'buffer'
        12        ASSIGN_ADD                                    0  $9      $8, !0
        13        OP_DATA                                                  $10
        14      > RETURN                                                   $9
  16    15*     > RETURN                                                   null

End of function __get

Function calc_x:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/00Kuv
function name:  calc_x
number of ops:  8
compiled vars:  !0 = $x
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  19     0  E >   NEW                                              $1      :11
         1        DO_FCALL                                      0          
         2        QM_ASSIGN                                                !0
  20     3        FETCH_OBJ_R                                      ~5      'y'
         4        ASSIGN_SUB                                    8          !0, 'y'
         5        OP_DATA                                                  ~5
  21     6      > RETURN                                                   !0
  22     7*     > RETURN                                                   null

End of function calc_x

Function calc_y:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/00Kuv
function name:  calc_y
number of ops:  11
compiled vars:  !0 = $y
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  25     0  E >   NEW                                              $1      :17
         1        DO_FCALL                                      0          
         2        QM_ASSIGN                                                !0
  27     3        FETCH_OBJ_W                                      $4      'buffer'
         4        ASSIGN_ADD                                    0          $4, 'y'
         5        OP_DATA                                                  !0
  28     6        FETCH_OBJ_R                                      ~7      'x'
         7        ASSIGN_SUB                                   32          !0, 'x'
         8        OP_DATA                                                  ~7
  29     9      > RETURN                                                   !0
  30    10*     > RETURN                                                   null

End of function calc_y

End of class C.

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