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<?php $intervalFrom = new DateInterval('PT12H'); $intervalTo = new DateInterval('PT1H30M'); $d1 = new DateTime("midnight"); $d1->add($intervalFrom); $d2 = new DateTime("midnight"); $d2->add($intervalTo); $diff = $d1->diff($d2); $strResult = sprintf("PT%sH%sM", $diff->h, $diff->i); $resultDateInterval = new DateInterval($strResult); var_dump($resultDateInterval);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/U2MZG
function name:  (null)
number of ops:  42
compiled vars:  !0 = $intervalFrom, !1 = $intervalTo, !2 = $d1, !3 = $d2, !4 = $diff, !5 = $strResult, !6 = $resultDateInterval
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   NEW                                                  $7      'DateInterval'
          1        SEND_VAL_EX                                                  'PT12H'
          2        DO_FCALL                                          0          
          3        ASSIGN                                                       !0, $7
    3     4        NEW                                                  $10     'DateInterval'
          5        SEND_VAL_EX                                                  'PT1H30M'
          6        DO_FCALL                                          0          
          7        ASSIGN                                                       !1, $10
    4     8        NEW                                                  $13     'DateTime'
          9        SEND_VAL_EX                                                  'midnight'
         10        DO_FCALL                                          0          
         11        ASSIGN                                                       !2, $13
    5    12        INIT_METHOD_CALL                                             !2, 'add'
         13        SEND_VAR_EX                                                  !0
         14        DO_FCALL                                          0          
    6    15        NEW                                                  $17     'DateTime'
         16        SEND_VAL_EX                                                  'midnight'
         17        DO_FCALL                                          0          
         18        ASSIGN                                                       !3, $17
    7    19        INIT_METHOD_CALL                                             !3, 'add'
         20        SEND_VAR_EX                                                  !1
         21        DO_FCALL                                          0          
    8    22        INIT_METHOD_CALL                                             !2, 'diff'
         23        SEND_VAR_EX                                                  !3
         24        DO_FCALL                                          0  $21     
         25        ASSIGN                                                       !4, $21
    9    26        FETCH_OBJ_R                                          ~23     !4, 'h'
         27        FETCH_OBJ_R                                          ~24     !4, 'i'
         28        ROPE_INIT                                         5  ~26     'PT'
         29        ROPE_ADD                                          1  ~26     ~26, ~23
         30        ROPE_ADD                                          2  ~26     ~26, 'H'
         31        ROPE_ADD                                          3  ~26     ~26, ~24
         32        ROPE_END                                          4  ~25     ~26, 'M'
         33        ASSIGN                                                       !5, ~25
   10    34        NEW                                                  $30     'DateInterval'
         35        SEND_VAR_EX                                                  !5
         36        DO_FCALL                                          0          
         37        ASSIGN                                                       !6, $30
   11    38        INIT_FCALL                                                   'var_dump'
         39        SEND_VAR                                                     !6
         40        DO_ICALL                                                     
         41      > RETURN                                                       1

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