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<?php $tz = new DateTimeZone('Europe/Brussels'); $a = new DateTime('2014-10-26T02:15:00', $tz); echo $a->sub(new DateInterval('PT30M'))->format('c'); echo ' '; $b = new DateTime('2014-10-26T01:45:00', $tz); echo $b->add(new DateInterval('PT30M'))->format('c');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/AMvDd
function name:  (null)
number of ops:  36
compiled vars:  !0 = $tz, !1 = $a, !2 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $3      'DateTimeZone'
          1        SEND_VAL_EX                                              'Europe%2FBrussels'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $3
    3     4        NEW                                              $6      'DateTime'
          5        SEND_VAL_EX                                              '2014-10-26T02%3A15%3A00'
          6        SEND_VAR_EX                                              !0
          7        DO_FCALL                                      0          
          8        ASSIGN                                                   !1, $6
    4     9        INIT_METHOD_CALL                                         !1, 'sub'
         10        NEW                                              $9      'DateInterval'
         11        SEND_VAL_EX                                              'PT30M'
         12        DO_FCALL                                      0          
         13        SEND_VAR_NO_REF_EX                                       $9
         14        DO_FCALL                                      0  $11     
         15        INIT_METHOD_CALL                                         $11, 'format'
         16        SEND_VAL_EX                                              'c'
         17        DO_FCALL                                      0  $12     
         18        ECHO                                                     $12
    6    19        ECHO                                                     '+'
    7    20        NEW                                              $13     'DateTime'
         21        SEND_VAL_EX                                              '2014-10-26T01%3A45%3A00'
         22        SEND_VAR_EX                                              !0
         23        DO_FCALL                                      0          
         24        ASSIGN                                                   !2, $13
    8    25        INIT_METHOD_CALL                                         !2, 'add'
         26        NEW                                              $16     'DateInterval'
         27        SEND_VAL_EX                                              'PT30M'
         28        DO_FCALL                                      0          
         29        SEND_VAR_NO_REF_EX                                       $16
         30        DO_FCALL                                      0  $18     
         31        INIT_METHOD_CALL                                         $18, 'format'
         32        SEND_VAL_EX                                              'c'
         33        DO_FCALL                                      0  $19     
         34        ECHO                                                     $19
         35      > RETURN                                                   1

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