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<?php var_dump(json_decode('{"a": 1}')); var_dump(json_decode('{"1": 1}')); var_dump(json_decode('{a: 1, "a": 1}')); // invalid JSON var_dump(json_decode('{"a\u0000b: 1}'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nncBo
function name:  (null)
number of ops:  25
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                                   'var_dump'
          1        INIT_FCALL                                                   'json_decode'
          2        SEND_VAL                                                     '%7B%22a%22%3A+1%7D'
          3        DO_ICALL                                             $0      
          4        SEND_VAR                                                     $0
          5        DO_ICALL                                                     
    3     6        INIT_FCALL                                                   'var_dump'
          7        INIT_FCALL                                                   'json_decode'
          8        SEND_VAL                                                     '%7B%221%22%3A+1%7D'
          9        DO_ICALL                                             $2      
         10        SEND_VAR                                                     $2
         11        DO_ICALL                                                     
    4    12        INIT_FCALL                                                   'var_dump'
         13        INIT_FCALL                                                   'json_decode'
         14        SEND_VAL                                                     '%7Ba%3A+1%2C+%22a%22%3A+1%7D'
         15        DO_ICALL                                             $4      
         16        SEND_VAR                                                     $4
         17        DO_ICALL                                                     
    5    18        INIT_FCALL                                                   'var_dump'
         19        INIT_FCALL                                                   'json_decode'
         20        SEND_VAL                                                     '%7B%22a%5Cu0000b%3A+1%7D'
         21        DO_ICALL                                             $6      
         22        SEND_VAR                                                     $6
         23        DO_ICALL                                                     
         24      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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