3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new StdClass; $a->a = 1; $a->b = 2; var_dump(json_encode($a)); var_dump(array( 'a' => 1, 'b' => 2 ));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TtF9V
function name:  (null)
number of ops:  17
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $1      'StdClass'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
    3     3        ASSIGN_OBJ                                               !0, 'a'
          4        OP_DATA                                                  1
    4     5        ASSIGN_OBJ                                               !0, 'b'
          6        OP_DATA                                                  2
    5     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'json_encode'
          9        SEND_VAR                                                 !0
         10        DO_ICALL                                         $6      
         11        SEND_VAR                                                 $6
         12        DO_ICALL                                                 
    6    13        INIT_FCALL                                               'var_dump'
    7    14        SEND_VAL                                                 <array>
         15        DO_ICALL                                                 
    9    16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.25 ms | 1394 KiB | 17 Q