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<?php class MyIterator implements Iterator { private $var = array(); public function arra($array) { if (is_array($array)) { $this->var = $array; } } public function rewind() { echo "rewinding\n"; reset($this->var); } public function current() { $var = current($this->var); echo "current: $var\n"; return $var; } public function key() { $var = key($this->var); echo "key: $var\n"; return $var; } public function next() { $var = next($this->var); echo "next: $var\n"; return $var; } public function valid() { $key = key($this->var); $var = ($key !== NULL && $key !== FALSE); echo "valid: $var\n"; return $var; } } $values = array(1,2,3); $it = new MyIterator($values); foreach ($it as $a => $b) { print "$a: $b\n"; } ?>
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 7, Position 2 = 15
Branch analysis from position: 7
2 jumps found. (Code = 78) Position 1 = 8, Position 2 = 15
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
filename:       /in/9cb1u
function name:  (null)
number of ops:  17
compiled vars:  !0 = $values, !1 = $it, !2 = $b, !3 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   DECLARE_CLASS                                            'myiterator'
   51     1        ASSIGN                                                   !0, <array>
   52     2        NEW                                              $5      'MyIterator'
          3        SEND_VAR_EX                                              !0
          4        DO_FCALL                                      0          
          5        ASSIGN                                                   !1, $5
   53     6      > FE_RESET_R                                       $8      !1, ->15
          7    > > FE_FETCH_R                                       ~9      $8, !2, ->15
          8    >   ASSIGN                                                   !3, ~9
   54     9        ROPE_INIT                                     4  ~12     !3
         10        ROPE_ADD                                      1  ~12     ~12, '%3A+'
         11        ROPE_ADD                                      2  ~12     ~12, !2
         12        ROPE_END                                      3  ~11     ~12, '%0A'
         13        ECHO                                                     ~11
   53    14      > JMP                                                      ->7
         15    >   FE_FREE                                                  $8
   58    16      > RETURN                                                   1

Class MyIterator:
Function arra:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 5
Branch analysis from position: 3
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/9cb1u
function name:  arra
number of ops:  6
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   RECV                                             !0      
    8     1        TYPE_CHECK                                  128          !0
          2      > JMPZ                                                     ~1, ->5
    9     3    >   ASSIGN_OBJ                                               'var'
          4        OP_DATA                                                  !0
   11     5    > > RETURN                                                   null

End of function arra

Function rewind:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9cb1u
function name:  rewind
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   15     0  E >   ECHO                                                     'rewinding%0A'
   16     1        INIT_FCALL                                               'reset'
          2        FETCH_OBJ_W                                      $0      'var'
          3        SEND_REF                                                 $0
          4        DO_ICALL                                                 
   17     5      > RETURN                                                   null

End of function rewind

Function current:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9cb1u
function name:  current
number of ops:  11
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   21     0  E >   INIT_FCALL                                               'current'
          1        FETCH_OBJ_R                                      ~1      'var'
          2        SEND_VAL                                                 ~1
          3        DO_ICALL                                         $2      
          4        ASSIGN                                                   !0, $2
   22     5        ROPE_INIT                                     3  ~5      'current%3A+'
          6        ROPE_ADD                                      1  ~5      ~5, !0
          7        ROPE_END                                      2  ~4      ~5, '%0A'
          8        ECHO                                                     ~4
   23     9      > RETURN                                                   !0
   24    10*     > RETURN                                                   null

End of function current

Function key:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9cb1u
function name:  key
number of ops:  11
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   28     0  E >   INIT_FCALL                                               'key'
          1        FETCH_OBJ_R                                      ~1      'var'
          2        SEND_VAL                                                 ~1
          3        DO_ICALL                                         $2      
          4        ASSIGN                                                   !0, $2
   29     5        ROPE_INIT                                     3  ~5      'key%3A+'
          6        ROPE_ADD                                      1  ~5      ~5, !0
          7        ROPE_END                                      2  ~4      ~5, '%0A'
          8        ECHO                                                     ~4
   30     9      > RETURN                                                   !0
   31    10*     > RETURN                                                   null

End of function key

Function next:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9cb1u
function name:  next
number of ops:  11
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   35     0  E >   INIT_FCALL                                               'next'
          1        FETCH_OBJ_W                                      $1      'var'
          2        SEND_REF                                                 $1
          3        DO_ICALL                                         $2      
          4        ASSIGN                                                   !0, $2
   36     5        ROPE_INIT                                     3  ~5      'next%3A+'
          6        ROPE_ADD                                      1  ~5      ~5, !0
          7        ROPE_END                                      2  ~4      ~5, '%0A'
          8        ECHO                                                     ~4
   37     9      > RETURN                                                   !0
   38    10*     > RETURN                                                   null

End of function next

Function valid:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
filename:       /in/9cb1u
function name:  valid
number of ops:  16
compiled vars:  !0 = $key, !1 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   42     0  E >   INIT_FCALL                                               'key'
          1        FETCH_OBJ_R                                      ~2      'var'
          2        SEND_VAL                                                 ~2
          3        DO_ICALL                                         $3      
          4        ASSIGN                                                   !0, $3
   43     5        TYPE_CHECK                                  1020  ~5      !0
          6      > JMPZ_EX                                          ~5      ~5, ->9
          7    >   TYPE_CHECK                                  1018  ~6      !0
          8        BOOL                                             ~5      ~6
          9    >   ASSIGN                                                   !1, ~5
   45    10        ROPE_INIT                                     3  ~9      'valid%3A+'
         11        ROPE_ADD                                      1  ~9      ~9, !1
         12        ROPE_END                                      2  ~8      ~9, '%0A'
         13        ECHO                                                     ~8
   46    14      > RETURN                                                   !1
   47    15*     > RETURN                                                   null

End of function valid

End of class MyIterator.

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