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<?php $tz = new DateTimeZone('-09:00'); $dbTz = new DateTimeZone('+00:00'); $date = new DateTimeImmutable('2015-09-01+00:00', $tz); var_dump($date->getOffset()); $date = $date->setTimezone($tz); var_dump($date->getOffset()); $date = $date->setTimezone($dbTz); var_dump($date->getOffset());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/JtAdV
function name:  (null)
number of ops:  37
compiled vars:  !0 = $tz, !1 = $dbTz, !2 = $date
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $3      'DateTimeZone'
          1        SEND_VAL_EX                                              '-09%3A00'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $3
    4     4        NEW                                              $6      'DateTimeZone'
          5        SEND_VAL_EX                                              '%2B00%3A00'
          6        DO_FCALL                                      0          
          7        ASSIGN                                                   !1, $6
    5     8        NEW                                              $9      'DateTimeImmutable'
          9        SEND_VAL_EX                                              '2015-09-01%2B00%3A00'
         10        SEND_VAR_EX                                              !0
         11        DO_FCALL                                      0          
         12        ASSIGN                                                   !2, $9
    6    13        INIT_FCALL                                               'var_dump'
         14        INIT_METHOD_CALL                                         !2, 'getOffset'
         15        DO_FCALL                                      0  $12     
         16        SEND_VAR                                                 $12
         17        DO_ICALL                                                 
    8    18        INIT_METHOD_CALL                                         !2, 'setTimezone'
         19        SEND_VAR_EX                                              !0
         20        DO_FCALL                                      0  $14     
         21        ASSIGN                                                   !2, $14
    9    22        INIT_FCALL                                               'var_dump'
         23        INIT_METHOD_CALL                                         !2, 'getOffset'
         24        DO_FCALL                                      0  $16     
         25        SEND_VAR                                                 $16
         26        DO_ICALL                                                 
   11    27        INIT_METHOD_CALL                                         !2, 'setTimezone'
         28        SEND_VAR_EX                                              !1
         29        DO_FCALL                                      0  $18     
         30        ASSIGN                                                   !2, $18
   12    31        INIT_FCALL                                               'var_dump'
         32        INIT_METHOD_CALL                                         !2, 'getOffset'
         33        DO_FCALL                                      0  $20     
         34        SEND_VAR                                                 $20
         35        DO_ICALL                                                 
         36      > RETURN                                                   1

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