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<?php $date1 = new DateTime(time()); $date2 = clone $date1; $interval = new DateInterval('PT1H5M'); $date2->add($interval); $diff = $date2->diff($date1); echo $diff->format('%i') /* lots of adding up to get complete interval as minutes this way */; echo ' minutes'; echo PHP_EOL; var_dump((array)$diff); echo PHP_EOL; echo ($date2->getTimestamp() - $date1->getTimestamp()) / 60; echo ' minutes';
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/cTBbM
function name:  (null)
number of ops:  39
compiled vars:  !0 = $date1, !1 = $date2, !2 = $interval, !3 = $diff
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $4      'DateTime'
          1        INIT_FCALL                                               'time'
          2        DO_ICALL                                         $5      
          3        SEND_VAR_NO_REF_EX                                       $5
          4        DO_FCALL                                      0          
          5        ASSIGN                                                   !0, $4
    4     6        CLONE                                            ~8      !0
          7        ASSIGN                                                   !1, ~8
    6     8        NEW                                              $10     'DateInterval'
          9        SEND_VAL_EX                                              'PT1H5M'
         10        DO_FCALL                                      0          
         11        ASSIGN                                                   !2, $10
    7    12        INIT_METHOD_CALL                                         !1, 'add'
         13        SEND_VAR_EX                                              !2
         14        DO_FCALL                                      0          
    9    15        INIT_METHOD_CALL                                         !1, 'diff'
         16        SEND_VAR_EX                                              !0
         17        DO_FCALL                                      0  $14     
         18        ASSIGN                                                   !3, $14
   11    19        INIT_METHOD_CALL                                         !3, 'format'
         20        SEND_VAL_EX                                              '%25i'
         21        DO_FCALL                                      0  $16     
         22        ECHO                                                     $16
   12    23        ECHO                                                     '+minutes'
   14    24        ECHO                                                     '%0A'
   15    25        INIT_FCALL                                               'var_dump'
         26        CAST                                          7  ~17     !3
         27        SEND_VAL                                                 ~17
         28        DO_ICALL                                                 
   17    29        ECHO                                                     '%0A'
   18    30        INIT_METHOD_CALL                                         !1, 'getTimestamp'
         31        DO_FCALL                                      0  $19     
         32        INIT_METHOD_CALL                                         !0, 'getTimestamp'
         33        DO_FCALL                                      0  $20     
         34        SUB                                              ~21     $19, $20
         35        DIV                                              ~22     ~21, 60
         36        ECHO                                                     ~22
   19    37        ECHO                                                     '+minutes'
         38      > RETURN                                                   1

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