3v4l.org

run code in 300+ PHP versions simultaneously
<?php $d = new \stdClass(); $d->asdf = new \stdClass(); var_dump(empty($d->asd)); var_dump(isset($d->asdf[0]));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LIn9l
function name:  (null)
number of ops:  17
compiled vars:  !0 = $d
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'stdClass'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
    4     3        NEW                                              $5      'stdClass'
          4        DO_FCALL                                      0          
          5        ASSIGN_OBJ                                               !0, 'asdf'
          6        OP_DATA                                                  $5
    5     7        INIT_FCALL                                               'var_dump'
          8        ISSET_ISEMPTY_PROP_OBJ                           ~7      !0, 'asd'
          9        SEND_VAL                                                 ~7
         10        DO_ICALL                                                 
    6    11        INIT_FCALL                                               'var_dump'
         12        FETCH_OBJ_IS                                     ~9      !0, 'asdf'
         13        ISSET_ISEMPTY_DIM_OBJ                         0  ~10     ~9, 0
         14        SEND_VAL                                                 ~10
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.98 ms | 1394 KiB | 15 Q