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<?php date_default_timezone_set('UTC'); $date = new DateTime('2015-01-01T12:00:00-05:00'); $timezone = $date->getTimezone(); var_dump($date); $date->setTimezone(new DateTimeZone('UTC')); var_dump($date); $date->setTimezone($timezone); var_dump($date); $date->setTimezone(new DateTimeZone('UTC')); var_dump($date);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/bEGmb
function name:  (null)
number of ops:  38
compiled vars:  !0 = $date, !1 = $timezone
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'date_default_timezone_set'
          1        SEND_VAL                                                     'UTC'
          2        DO_ICALL                                                     
    5     3        NEW                                                  $3      'DateTime'
          4        SEND_VAL_EX                                                  '2015-01-01T12%3A00%3A00-05%3A00'
          5        DO_FCALL                                          0          
          6        ASSIGN                                                       !0, $3
    6     7        INIT_METHOD_CALL                                             !0, 'getTimezone'
          8        DO_FCALL                                          0  $6      
          9        ASSIGN                                                       !1, $6
    7    10        INIT_FCALL                                                   'var_dump'
         11        SEND_VAR                                                     !0
         12        DO_ICALL                                                     
    8    13        INIT_METHOD_CALL                                             !0, 'setTimezone'
         14        NEW                                                  $9      'DateTimeZone'
         15        SEND_VAL_EX                                                  'UTC'
         16        DO_FCALL                                          0          
         17        SEND_VAR_NO_REF_EX                                           $9
         18        DO_FCALL                                          0          
    9    19        INIT_FCALL                                                   'var_dump'
         20        SEND_VAR                                                     !0
         21        DO_ICALL                                                     
   10    22        INIT_METHOD_CALL                                             !0, 'setTimezone'
         23        SEND_VAR_EX                                                  !1
         24        DO_FCALL                                          0          
   11    25        INIT_FCALL                                                   'var_dump'
         26        SEND_VAR                                                     !0
         27        DO_ICALL                                                     
   12    28        INIT_METHOD_CALL                                             !0, 'setTimezone'
         29        NEW                                                  $15     'DateTimeZone'
         30        SEND_VAL_EX                                                  'UTC'
         31        DO_FCALL                                          0          
         32        SEND_VAR_NO_REF_EX                                           $15
         33        DO_FCALL                                          0          
   13    34        INIT_FCALL                                                   'var_dump'
         35        SEND_VAR                                                     !0
         36        DO_ICALL                                                     
         37      > RETURN                                                       1

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