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<pre><?php $x = [ 'email' => 'test@esky.pl', 'list_id' => 100, 'additional' => 'pipe=separated|additional=values|system=iOS|system version=10.0 RC' ]; print_r(json_encode($x)); $x = [ 'email' => 'test@esky.pl', 'id' => 100, 'additional_data' => [ 'system' => 'iOS', 'system version' => '10.0 RC' ]]; print_r(json_encode($x));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/n3nse
function name:  (null)
number of ops:  16
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    1     0  E >   ECHO                                                     '%3Cpre%3E'
    2     1        ASSIGN                                                   !0, <array>
    7     2        INIT_FCALL                                               'print_r'
          3        INIT_FCALL                                               'json_encode'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        SEND_VAR                                                 $2
          7        DO_ICALL                                                 
    8     8        ASSIGN                                                   !0, <array>
   15     9        INIT_FCALL                                               'print_r'
         10        INIT_FCALL                                               'json_encode'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                         $5      
         13        SEND_VAR                                                 $5
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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