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<?php $array = json_decode('{"1":"1","2":"1","3":"1","4":"1","12":"1"}'); var_dump($array); var_dump(isset($array->{12}));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/DvOpm
function name:  (null)
number of ops:  12
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   INIT_FCALL                                               'json_decode'
          1        SEND_VAL                                                 '%7B%221%22%3A%221%22%2C%222%22%3A%221%22%2C%223%22%3A%221%22%2C%224%22%3A%221%22%2C%2212%22%3A%221%22%7D'
          2        DO_ICALL                                         $1      
          3        ASSIGN                                                   !0, $1
    6     4        INIT_FCALL                                               'var_dump'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
    8     7        INIT_FCALL                                               'var_dump'
          8        ISSET_ISEMPTY_PROP_OBJ                           ~4      !0, '12'
          9        SEND_VAL                                                 ~4
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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