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<?php date_default_timezone_set("Europe/Amsterdam"); $date = new DateTime('2021-03-28 03:00:00', new DateTimeZone('Europe/Amsterdam')); $_30mbefore = (clone $date)->sub(new DateInterval('PT30M')); $_30mafter = (clone $date)->add(new DateInterval('PT30M')); var_dump($date->format(DATE_ATOM)); var_dump($_30mbefore->format(DATE_ATOM)); var_dump($_30mafter->format(DATE_ATOM));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KKHlK
function name:  (null)
number of ops:  46
compiled vars:  !0 = $date, !1 = $_30mbefore, !2 = $_30mafter
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'date_default_timezone_set'
          1        SEND_VAL                                                 'Europe%2FAmsterdam'
          2        DO_ICALL                                                 
    5     3        NEW                                              $4      'DateTime'
          4        SEND_VAL_EX                                              '2021-03-28+03%3A00%3A00'
          5        NEW                                              $5      'DateTimeZone'
          6        SEND_VAL_EX                                              'Europe%2FAmsterdam'
          7        DO_FCALL                                      0          
          8        SEND_VAR_NO_REF_EX                                       $5
          9        DO_FCALL                                      0          
         10        ASSIGN                                                   !0, $4
    6    11        CLONE                                            ~9      !0
         12        INIT_METHOD_CALL                                         ~9, 'sub'
         13        NEW                                              $10     'DateInterval'
         14        SEND_VAL_EX                                              'PT30M'
         15        DO_FCALL                                      0          
         16        SEND_VAR_NO_REF_EX                                       $10
         17        DO_FCALL                                      0  $12     
         18        ASSIGN                                                   !1, $12
    7    19        CLONE                                            ~14     !0
         20        INIT_METHOD_CALL                                         ~14, 'add'
         21        NEW                                              $15     'DateInterval'
         22        SEND_VAL_EX                                              'PT30M'
         23        DO_FCALL                                      0          
         24        SEND_VAR_NO_REF_EX                                       $15
         25        DO_FCALL                                      0  $17     
         26        ASSIGN                                                   !2, $17
    9    27        INIT_FCALL                                               'var_dump'
         28        INIT_METHOD_CALL                                         !0, 'format'
         29        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsP'
         30        DO_FCALL                                      0  $19     
         31        SEND_VAR                                                 $19
         32        DO_ICALL                                                 
   10    33        INIT_FCALL                                               'var_dump'
         34        INIT_METHOD_CALL                                         !1, 'format'
         35        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsP'
         36        DO_FCALL                                      0  $21     
         37        SEND_VAR                                                 $21
         38        DO_ICALL                                                 
   11    39        INIT_FCALL                                               'var_dump'
         40        INIT_METHOD_CALL                                         !2, 'format'
         41        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsP'
         42        DO_FCALL                                      0  $23     
         43        SEND_VAR                                                 $23
         44        DO_ICALL                                                 
         45      > RETURN                                                   1

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