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<?php class foo implements ArrayAccess { private $container = array(); public function __construct() { $this->container = array(); } public function offsetSet($offset, $value) { if (is_null($offset)) { $this->container[] = $value; } else { $this->container[$offset] = $value; } } public function offsetExists($offset) { return isset($this->container[$offset]); } public function offsetUnset($offset) { unset($this->container[$offset]); } public function offsetGet($offset) { return isset($this->container[$offset]) ? $this->container[$offset] : null; } } $foo = new foo(); $foo['bar'] = 1; var_dump(array_key_exists('bar', $foo)); TRUE ? print "ok" : NULL;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 14
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/m3FXm
function name:  (null)
number of ops:  17
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_CLASS                                            'foo'
   26     1        NEW                                              $1      'foo'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
   27     4        ASSIGN_DIM                                               !0, 'bar'
          5        OP_DATA                                                  1
   28     6        INIT_FCALL                                               'var_dump'
          7        ARRAY_KEY_EXISTS                                 ~5      'bar', !0
          8        SEND_VAL                                                 ~5
          9        DO_ICALL                                                 
   29    10      > JMPZ                                                     <true>, ->14
         11    >   ECHO                                                     'ok'
         12        QM_ASSIGN                                        ~7      1
         13      > JMP                                                      ->15
         14    >   QM_ASSIGN                                        ~7      null
         15    >   FREE                                                     ~7
         16      > RETURN                                                   1

Class foo:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/m3FXm
function name:  __construct
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   ASSIGN_OBJ                                               'container'
          1        OP_DATA                                                  <array>
    7     2      > RETURN                                                   null

End of function __construct

Function offsetset:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 8
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 11
Branch analysis from position: 11
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/m3FXm
function name:  offsetSet
number of ops:  12
compiled vars:  !0 = $offset, !1 = $value
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    9     2        TYPE_CHECK                                    2          !0
          3      > JMPZ                                                     ~2, ->8
   10     4    >   FETCH_OBJ_W                                      $3      'container'
          5        ASSIGN_DIM                                               $3
          6        OP_DATA                                                  !1
          7      > JMP                                                      ->11
   12     8    >   FETCH_OBJ_W                                      $5      'container'
          9        ASSIGN_DIM                                               $5, !0
         10        OP_DATA                                                  !1
   14    11    > > RETURN                                                   null

End of function offsetset

Function offsetexists:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/m3FXm
function name:  offsetExists
number of ops:  5
compiled vars:  !0 = $offset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   15     0  E >   RECV                                             !0      
   16     1        FETCH_OBJ_IS                                     ~1      'container'
          2        ISSET_ISEMPTY_DIM_OBJ                         0  ~2      ~1, !0
          3      > RETURN                                                   ~2
   17     4*     > RETURN                                                   null

End of function offsetexists

Function offsetunset:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/m3FXm
function name:  offsetUnset
number of ops:  4
compiled vars:  !0 = $offset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   18     0  E >   RECV                                             !0      
   19     1        FETCH_OBJ_UNSET                                  $1      'container'
          2        UNSET_DIM                                                $1, !0
   20     3      > RETURN                                                   null

End of function offsetunset

Function offsetget:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 8
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/m3FXm
function name:  offsetGet
number of ops:  11
compiled vars:  !0 = $offset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   21     0  E >   RECV                                             !0      
   22     1        FETCH_OBJ_IS                                     ~1      'container'
          2        ISSET_ISEMPTY_DIM_OBJ                         0          ~1, !0
          3      > JMPZ                                                     ~2, ->8
          4    >   FETCH_OBJ_R                                      ~3      'container'
          5        FETCH_DIM_R                                      ~4      ~3, !0
          6        QM_ASSIGN                                        ~5      ~4
          7      > JMP                                                      ->9
          8    >   QM_ASSIGN                                        ~5      null
          9    > > RETURN                                                   ~5
   23    10*     > RETURN                                                   null

End of function offsetget

End of class foo.

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