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<?php class Foo { function __construct() { $this->bar = new Bar($this); } function __descruct() { unset($this->bar); } } class Bar { function __construct($foo = null) { $this->foo = $foo; } } $i = 1; while ($i++ < 1000) { $foo = new Foo(); unset($foo); if ($i > 990) { echo number_format(memory_get_usage()) . "\n"; } }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
2 jumps found. (Code = 44) Position 1 = 18, Position 2 = 2
Branch analysis from position: 18
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 2
2 jumps found. (Code = 43) Position 1 = 8, Position 2 = 15
Branch analysis from position: 8
2 jumps found. (Code = 44) Position 1 = 18, Position 2 = 2
Branch analysis from position: 18
Branch analysis from position: 2
Branch analysis from position: 15
filename:       /in/WVgY1
function name:  (null)
number of ops:  19
compiled vars:  !0 = $i, !1 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   19     0  E >   ASSIGN                                                   !0, 1
   20     1      > JMP                                                      ->15
   21     2    >   NEW                                              $3      'Foo'
          3        DO_FCALL                                      0          
          4        ASSIGN                                                   !1, $3
   22     5        UNSET_CV                                                 !1
   23     6        IS_SMALLER                                               990, !0
          7      > JMPZ                                                     ~6, ->15
   24     8    >   INIT_FCALL                                               'number_format'
          9        INIT_FCALL                                               'memory_get_usage'
         10        DO_ICALL                                         $7      
         11        SEND_VAR                                                 $7
         12        DO_ICALL                                         $8      
         13        CONCAT                                           ~9      $8, '%0A'
         14        ECHO                                                     ~9
   20    15    >   POST_INC                                         ~10     !0
         16        IS_SMALLER                                               ~10, 1000
         17      > JMPNZ                                                    ~11, ->2
   26    18    > > RETURN                                                   1

Class Foo:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WVgY1
function name:  __construct
number of ops:  7
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   NEW                                              $1      'Bar'
          1        FETCH_THIS                                       $2      
          2        SEND_VAR_EX                                              $2
          3        DO_FCALL                                      0          
          4        ASSIGN_OBJ                                               'bar'
          5        OP_DATA                                                  $1
    6     6      > RETURN                                                   null

End of function __construct

Function __descruct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WVgY1
function name:  __descruct
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   UNSET_OBJ                                                'bar'
    9     1      > RETURN                                                   null

End of function __descruct

End of class Foo.

Class Bar:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WVgY1
function name:  __construct
number of ops:  4
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   RECV_INIT                                        !0      null
   15     1        ASSIGN_OBJ                                               'foo'
          2        OP_DATA                                                  !0
   16     3      > RETURN                                                   null

End of function __construct

End of class Bar.

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