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<?php echo $abc = json_encode(array(1,2,3)); var_dump(json_encode($abc));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QVem5
function name:  (null)
number of ops:  12
compiled vars:  !0 = $abc
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'json_encode'
          1        SEND_VAL                                                 <array>
          2        DO_ICALL                                         $1      
          3        ASSIGN                                           ~2      !0, $1
          4        ECHO                                                     ~2
    3     5        INIT_FCALL                                               'var_dump'
          6        INIT_FCALL                                               'json_encode'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                         $3      
          9        SEND_VAR                                                 $3
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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