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<?php echo json_encode(['my_value' => (int) '2.19']);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/T6bhD
function name:  (null)
number of ops:  7
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'json_encode'
          1        CAST                                          4  ~0      '2.19'
          2        INIT_ARRAY                                       ~1      ~0, 'my_value'
          3        SEND_VAL                                                 ~1
          4        DO_ICALL                                         $2      
          5        ECHO                                                     $2
          6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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