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<?php $buggy = new DateInterval('P0Y'); $buggy->f += 0.01; $ok = new DateInterval('P0Y'); $ok->f = $ok->f + 0.01; var_dump($buggy->f); var_dump($ok->f);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/q2n1G
function name:  (null)
number of ops:  23
compiled vars:  !0 = $buggy, !1 = $ok
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   NEW                                                  $2      'DateInterval'
          1        SEND_VAL_EX                                                  'P0Y'
          2        DO_FCALL                                          0          
          3        ASSIGN                                                       !0, $2
    4     4        ASSIGN_OBJ_OP                                     1          !0, 'f'
          5        OP_DATA                                                      0.01
    6     6        NEW                                                  $6      'DateInterval'
          7        SEND_VAL_EX                                                  'P0Y'
          8        DO_FCALL                                          0          
          9        ASSIGN                                                       !1, $6
    7    10        FETCH_OBJ_R                                          ~10     !1, 'f'
         11        ADD                                                  ~11     ~10, 0.01
         12        ASSIGN_OBJ                                                   !1, 'f'
         13        OP_DATA                                                      ~11
    9    14        INIT_FCALL                                                   'var_dump'
         15        FETCH_OBJ_R                                          ~12     !0, 'f'
         16        SEND_VAL                                                     ~12
         17        DO_ICALL                                                     
   10    18        INIT_FCALL                                                   'var_dump'
         19        FETCH_OBJ_R                                          ~14     !1, 'f'
         20        SEND_VAL                                                     ~14
         21        DO_ICALL                                                     
         22      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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