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<?php $dateTime = new DateTimeImmutable('2014-10-26 01:00:00', new DateTimeZone('Europe/Berlin'));var_dump($dateTime->format(DATE_ISO8601));$test = $dateTime->modify('+61 minutes');var_dump($test->format(DATE_ISO8601));$test = $dateTime->modify('+121 minutes');var_dump($test->format(DATE_ISO8601));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0jqUA
function name:  (null)
number of ops:  35
compiled vars:  !0 = $dateTime, !1 = $test
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $2      'DateTimeImmutable'
          1        SEND_VAL_EX                                              '2014-10-26+01%3A00%3A00'
          2        NEW                                              $3      'DateTimeZone'
          3        SEND_VAL_EX                                              'Europe%2FBerlin'
          4        DO_FCALL                                      0          
          5        SEND_VAR_NO_REF_EX                                       $3
          6        DO_FCALL                                      0          
          7        ASSIGN                                                   !0, $2
          8        INIT_FCALL                                               'var_dump'
          9        INIT_METHOD_CALL                                         !0, 'format'
         10        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsO'
         11        DO_FCALL                                      0  $7      
         12        SEND_VAR                                                 $7
         13        DO_ICALL                                                 
         14        INIT_METHOD_CALL                                         !0, 'modify'
         15        SEND_VAL_EX                                              '%2B61+minutes'
         16        DO_FCALL                                      0  $9      
         17        ASSIGN                                                   !1, $9
         18        INIT_FCALL                                               'var_dump'
         19        INIT_METHOD_CALL                                         !1, 'format'
         20        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsO'
         21        DO_FCALL                                      0  $11     
         22        SEND_VAR                                                 $11
         23        DO_ICALL                                                 
         24        INIT_METHOD_CALL                                         !0, 'modify'
         25        SEND_VAL_EX                                              '%2B121+minutes'
         26        DO_FCALL                                      0  $13     
         27        ASSIGN                                                   !1, $13
         28        INIT_FCALL                                               'var_dump'
         29        INIT_METHOD_CALL                                         !1, 'format'
         30        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsO'
         31        DO_FCALL                                      0  $15     
         32        SEND_VAR                                                 $15
         33        DO_ICALL                                                 
         34      > RETURN                                                   1

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