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<?php class Foo { public function __get($name) { echo __METHOD__ . "($name)" . PHP_EOL; switch ($name) { case 'foo': return new Foo(); case 'bar': return 'bar'; default: return null; } } public function __isset($name) { echo __METHOD__ . "($name)" . PHP_EOL; return $name === 'bar'; } } $foo = new Foo(); echo (empty($foo->foo->bar) ? 'is empty' : 'is not empty') . PHP_EOL;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
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/c2Xqr
function name:  (null)
number of ops:  12
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   18     0  E >   NEW                                              $1      'Foo'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   19     3        FETCH_OBJ_IS                                     ~4      !0, 'foo'
          4        ISSET_ISEMPTY_PROP_OBJ                                   ~4, 'bar'
          5      > JMPZ                                                     ~5, ->8
          6    >   QM_ASSIGN                                        ~6      'is+empty'
          7      > JMP                                                      ->9
          8    >   QM_ASSIGN                                        ~6      'is+not+empty'
          9    >   CONCAT                                           ~7      ~6, '%0A'
         10        ECHO                                                     ~7
   20    11      > RETURN                                                   1

Class Foo:
Function __get:
Finding entry points
Branch analysis from position: 0
4 jumps found. (Code = 188) Position 1 = 13, Position 2 = 16, Position 3 = 17, Position 4 = 8
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 16
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 17
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
2 jumps found. (Code = 44) Position 1 = 10, Position 2 = 13
Branch analysis from position: 10
2 jumps found. (Code = 44) Position 1 = 12, Position 2 = 16
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 17
Branch analysis from position: 17
Branch analysis from position: 16
Branch analysis from position: 13
filename:       /in/c2Xqr
function name:  __get
number of ops:  19
compiled vars:  !0 = $name
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        ROPE_INIT                                     3  ~2      '%28'
          2        ROPE_ADD                                      1  ~2      ~2, !0
          3        ROPE_END                                      2  ~1      ~2, '%29'
          4        CONCAT                                           ~4      'Foo%3A%3A__get', ~1
          5        CONCAT                                           ~5      ~4, '%0A'
          6        ECHO                                                     ~5
    5     7      > SWITCH_STRING                                            !0, [ 'foo':->13, 'bar':->16, ], ->17
    6     8    >   IS_EQUAL                                                 !0, 'foo'
          9      > JMPNZ                                                    ~6, ->13
    7    10    >   IS_EQUAL                                                 !0, 'bar'
         11      > JMPNZ                                                    ~6, ->16
         12    > > JMP                                                      ->17
    6    13    >   NEW                                              $7      'Foo'
         14        DO_FCALL                                      0          
         15      > RETURN                                                   $7
    7    16    > > RETURN                                                   'bar'
    8    17    > > RETURN                                                   null
   10    18*     > RETURN                                                   null

End of function __get

Function __isset:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/c2Xqr
function name:  __isset
number of ops:  10
compiled vars:  !0 = $name
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   RECV                                             !0      
   13     1        ROPE_INIT                                     3  ~2      '%28'
          2        ROPE_ADD                                      1  ~2      ~2, !0
          3        ROPE_END                                      2  ~1      ~2, '%29'
          4        CONCAT                                           ~4      'Foo%3A%3A__isset', ~1
          5        CONCAT                                           ~5      ~4, '%0A'
          6        ECHO                                                     ~5
   14     7        IS_IDENTICAL                                     ~6      !0, 'bar'
          8      > RETURN                                                   ~6
   15     9*     > RETURN                                                   null

End of function __isset

End of class Foo.

Generated using Vulcan Logic Dumper, using php 8.0.0


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