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<?php $di = new \DateInterval('P0Y'); $field = 'd'; $i = 1; $di->$field += $i; var_dump($di);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/plDlt
function name:  (null)
number of ops:  12
compiled vars:  !0 = $di, !1 = $field, !2 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $3      'DateInterval'
          1        SEND_VAL_EX                                              'P0Y'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $3
    3     4        ASSIGN                                                   !1, 'd'
    4     5        ASSIGN                                                   !2, 1
    5     6        ASSIGN_OBJ_OP                                 1          !0, !1
          7        OP_DATA                                                  !2
    6     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !0
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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