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<?php error_reporting(E_ALL); class MyArray implements ArrayAccess { public $value; public function __construct($value = null) { $this->value = $value; } public function &offsetGet($offset) { var_dump(__METHOD__); if (!isset($this->value[$offset])) { $this->value[$offset] = null; } return $this->value[$offset]; } public function offsetExists($offset) { var_dump(__METHOD__); return isset($this->value[$offset]); } public function offsetSet($offset, $value) { var_dump(__METHOD__); $this->value[$offset] = $value; } public function offsetUnset($offset) { var_dump(__METHOD__); $this->value[$offset] = null; } } $record = new MyArray([ 'foo' => [ 'bar' => 'baz' ] ]); var_dump(isset($record['foo']['bar'])); var_dump(isset($record['hello']['world']));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vOeG0
function name:  (null)
number of ops:  19
compiled vars:  !0 = $record
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'error_reporting'
          1        SEND_VAL                                                 32767
          2        DO_ICALL                                                 
    5     3        DECLARE_CLASS                                            'myarray'
   47     4        NEW                                              $2      'MyArray'
   49     5        SEND_VAL_EX                                              <array>
          6        DO_FCALL                                      0          
   47     7        ASSIGN                                                   !0, $2
   53     8        INIT_FCALL                                               'var_dump'
          9        FETCH_DIM_IS                                     ~5      !0, 'foo'
         10        ISSET_ISEMPTY_DIM_OBJ                         0  ~6      ~5, 'bar'
         11        SEND_VAL                                                 ~6
         12        DO_ICALL                                                 
   54    13        INIT_FCALL                                               'var_dump'
         14        FETCH_DIM_IS                                     ~8      !0, 'hello'
         15        ISSET_ISEMPTY_DIM_OBJ                         0  ~9      ~8, 'world'
         16        SEND_VAL                                                 ~9
         17        DO_ICALL                                                 
         18      > RETURN                                                   1

Class MyArray:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vOeG0
function name:  __construct
number of ops:  4
compiled vars:  !0 = $value
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   RECV_INIT                                        !0      null
   11     1        ASSIGN_OBJ                                               'value'
          2        OP_DATA                                                  !0
   12     3      > RETURN                                                   null

End of function __construct

Function offsetget:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 8, Position 2 = 11
Branch analysis from position: 8
Return found
Branch analysis from position: 11
filename:       /in/vOeG0
function name:  offsetGet
number of ops:  15
compiled vars:  !0 = $offset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   14     0  E >   RECV                                             !0      
   16     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAL                                                 'MyArray%3A%3AoffsetGet'
          3        DO_ICALL                                                 
   18     4        FETCH_OBJ_IS                                     ~2      'value'
          5        ISSET_ISEMPTY_DIM_OBJ                         0  ~3      ~2, !0
          6        BOOL_NOT                                         ~4      ~3
          7      > JMPZ                                                     ~4, ->11
   19     8    >   FETCH_OBJ_W                                      $5      'value'
          9        ASSIGN_DIM                                               $5, !0
         10        OP_DATA                                                  null
   22    11    >   FETCH_OBJ_W                                      $7      'value'
         12        FETCH_DIM_W                                      $8      $7, !0
         13      > RETURN_BY_REF                                            $8
   23    14*     > RETURN_BY_REF                                            null

End of function offsetget

Function offsetexists:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vOeG0
function name:  offsetExists
number of ops:  8
compiled vars:  !0 = $offset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   25     0  E >   RECV                                             !0      
   27     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAL                                                 'MyArray%3A%3AoffsetExists'
          3        DO_ICALL                                                 
   29     4        FETCH_OBJ_IS                                     ~2      'value'
          5        ISSET_ISEMPTY_DIM_OBJ                         0  ~3      ~2, !0
          6      > RETURN                                                   ~3
   30     7*     > RETURN                                                   null

End of function offsetexists

Function offsetset:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vOeG0
function name:  offsetSet
number of ops:  9
compiled vars:  !0 = $offset, !1 = $value
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   32     0  E >   RECV                                             !0      
          1        RECV                                             !1      
   34     2        INIT_FCALL                                               'var_dump'
          3        SEND_VAL                                                 'MyArray%3A%3AoffsetSet'
          4        DO_ICALL                                                 
   36     5        FETCH_OBJ_W                                      $3      'value'
          6        ASSIGN_DIM                                               $3, !0
          7        OP_DATA                                                  !1
   37     8      > RETURN                                                   null

End of function offsetset

Function offsetunset:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vOeG0
function name:  offsetUnset
number of ops:  8
compiled vars:  !0 = $offset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   39     0  E >   RECV                                             !0      
   41     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAL                                                 'MyArray%3A%3AoffsetUnset'
          3        DO_ICALL                                                 
   43     4        FETCH_OBJ_W                                      $2      'value'
          5        ASSIGN_DIM                                               $2, !0
          6        OP_DATA                                                  null
   44     7      > RETURN                                                   null

End of function offsetunset

End of class MyArray.

Generated using Vulcan Logic Dumper, using php 8.0.0


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