3v4l.org

run code in 500+ PHP versions simultaneously
<?php class A implements JsonSerializable { public function jsonSerialize() { return 'A'; } } $b = []; $b[] = new A(); $b[] = new A(); var_dump(json_encode($b));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/n0PPI
function name:  (null)
number of ops:  17
compiled vars:  !0 = $b
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   DECLARE_CLASS                                                'a'
    9     1        ASSIGN                                                       !0, <array>
   10     2        NEW                                                  $3      'A'
          3        DO_FCALL                                          0          
          4        ASSIGN_DIM                                                   !0
          5        OP_DATA                                                      $3
   11     6        NEW                                                  $6      'A'
          7        DO_FCALL                                          0          
          8        ASSIGN_DIM                                                   !0
          9        OP_DATA                                                      $6
   13    10        INIT_FCALL                                                   'var_dump'
         11        INIT_FCALL                                                   'json_encode'
         12        SEND_VAR                                                     !0
         13        DO_ICALL                                             $8      
         14        SEND_VAR                                                     $8
         15        DO_ICALL                                                     
         16      > RETURN                                                       1

Class A:
Function jsonserialize:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/n0PPI
function name:  jsonSerialize
number of ops:  2
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    5     0  E > > RETURN                                                       'A'
    6     1*     > RETURN                                                       null

End of function jsonserialize

End of class A.

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
158.81 ms | 2019 KiB | 15 Q