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<?php $di = DateInterval::createFromDateString('now'); var_dump($di); var_dump($di->date_string ?? 'hoge');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YjvuV
function name:  (null)
number of ops:  14
compiled vars:  !0 = $di
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_STATIC_METHOD_CALL                                      'DateInterval', 'createFromDateString'
          1        SEND_VAL                                                     'now'
          2        DO_FCALL                                          0  $1      
          3        ASSIGN                                                       !0, $1
    4     4        INIT_FCALL                                                   'var_dump'
          5        SEND_VAR                                                     !0
          6        DO_ICALL                                                     
    5     7        INIT_FCALL                                                   'var_dump'
          8        FETCH_OBJ_IS                                         ~4      !0, 'date_string'
          9        COALESCE                                             ~5      ~4
         10        QM_ASSIGN                                            ~5      'hoge'
         11        SEND_VAL                                                     ~5
         12        DO_ICALL                                                     
         13      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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