3v4l.org

run code in 300+ PHP versions simultaneously
<?php $obj = (object)[''=>null]; var_dump(json_encode($obj));//array(0) {}
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/gMl2o
function name:  (null)
number of ops:  9
compiled vars:  !0 = $obj
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   CAST                                          8  ~1      <array>
          1        ASSIGN                                                   !0, ~1
    3     2        INIT_FCALL                                               'var_dump'
          3        INIT_FCALL                                               'json_encode'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $3      
          6        SEND_VAR                                                 $3
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
170.91 ms | 1393 KiB | 17 Q