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<?php $date_utc = new DateTime('1895-01-01 05:17:32 UTC'); for($i = 1890; $i <= 1900 ; $i++) { $date = new DateTime( $i. '-01-01T00:00', new DateTimeZone('America/Toronto')); echo $date->format('Y-m-d H:i:s'), PHP_EOL; if($i == 1895) $utc_local = $date->format('U') . PHP_EOL; } if(isset($utc_local)) var_dump($date_utc->format('U') . ' => ' . $utc_local, $date->getTimezone()->getTransitions($utc_local, $utc_local));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 28
Branch analysis from position: 28
2 jumps found. (Code = 44) Position 1 = 30, Position 2 = 6
Branch analysis from position: 30
2 jumps found. (Code = 43) Position 1 = 32, Position 2 = 47
Branch analysis from position: 32
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 47
Branch analysis from position: 6
2 jumps found. (Code = 43) Position 1 = 22, Position 2 = 27
Branch analysis from position: 22
2 jumps found. (Code = 44) Position 1 = 30, Position 2 = 6
Branch analysis from position: 30
Branch analysis from position: 6
Branch analysis from position: 27
filename:       /in/CY4F7
function name:  (null)
number of ops:  48
compiled vars:  !0 = $date_utc, !1 = $i, !2 = $date, !3 = $utc_local
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $4      'DateTime'
          1        SEND_VAL_EX                                              '1895-01-01+05%3A17%3A32+UTC'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $4
    3     4        ASSIGN                                                   !1, 1890
          5      > JMP                                                      ->28
    4     6    >   NEW                                              $8      'DateTime'
          7        CONCAT                                           ~9      !1, '-01-01T00%3A00'
          8        SEND_VAL_EX                                              ~9
          9        NEW                                              $10     'DateTimeZone'
         10        SEND_VAL_EX                                              'America%2FToronto'
         11        DO_FCALL                                      0          
         12        SEND_VAR_NO_REF_EX                                       $10
         13        DO_FCALL                                      0          
         14        ASSIGN                                                   !2, $8
    5    15        INIT_METHOD_CALL                                         !2, 'format'
         16        SEND_VAL_EX                                              'Y-m-d+H%3Ai%3As'
         17        DO_FCALL                                      0  $14     
         18        ECHO                                                     $14
         19        ECHO                                                     '%0A'
    6    20        IS_EQUAL                                                 !1, 1895
         21      > JMPZ                                                     ~15, ->27
    7    22    >   INIT_METHOD_CALL                                         !2, 'format'
         23        SEND_VAL_EX                                              'U'
         24        DO_FCALL                                      0  $16     
         25        CONCAT                                           ~17     $16, '%0A'
         26        ASSIGN                                                   !3, ~17
    3    27    >   PRE_INC                                                  !1
         28    >   IS_SMALLER_OR_EQUAL                                      !1, 1900
         29      > JMPNZ                                                    ~20, ->6
   10    30    >   ISSET_ISEMPTY_CV                                         !3
         31      > JMPZ                                                     ~21, ->47
   11    32    >   INIT_FCALL                                               'var_dump'
         33        INIT_METHOD_CALL                                         !0, 'format'
         34        SEND_VAL_EX                                              'U'
         35        DO_FCALL                                      0  $22     
         36        CONCAT                                           ~23     $22, '+%3D%3E+'
         37        CONCAT                                           ~24     ~23, !3
         38        SEND_VAL                                                 ~24
         39        INIT_METHOD_CALL                                         !2, 'getTimezone'
         40        DO_FCALL                                      0  $25     
         41        INIT_METHOD_CALL                                         $25, 'getTransitions'
         42        SEND_VAR_EX                                              !3
         43        SEND_VAR_EX                                              !3
         44        DO_FCALL                                      0  $26     
         45        SEND_VAR                                                 $26
         46        DO_ICALL                                                 
         47    > > RETURN                                                   1

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