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<?php function getStandardOffsetFromUTC($timezone) { $timezone = new DateTimeZone($timezone); $transitions = array_slice($timezone->getTransitions(), -3); foreach (array_reverse($transitions) as $transition) { if ($transition['isdst'] == 1) // we are interested in standard offsets only { continue; } return sprintf('UTC %+03d:%02u', $transition['offset'] / 3600, abs($transition['offset']) % 3600 / 60); } return false; } echo getStandardOffsetFromUTC('America/Argentina/San_Luis') . "\n"; echo getStandardOffsetFromUTC('Antarctica/Casey') . "\n"; echo getStandardOffsetFromUTC('Antarctica/Davis') . "\n"; echo timezone_version_get(), "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ZHfTQ
function name:  (null)
number of ops:  20
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   21     0  E >   INIT_FCALL                                                   'getstandardoffsetfromutc'
          1        SEND_VAL                                                     'America%2FArgentina%2FSan_Luis'
          2        DO_FCALL                                          0  $0      
          3        CONCAT                                               ~1      $0, '%0A'
          4        ECHO                                                         ~1
   22     5        INIT_FCALL                                                   'getstandardoffsetfromutc'
          6        SEND_VAL                                                     'Antarctica%2FCasey'
          7        DO_FCALL                                          0  $2      
          8        CONCAT                                               ~3      $2, '%0A'
          9        ECHO                                                         ~3
   23    10        INIT_FCALL                                                   'getstandardoffsetfromutc'
         11        SEND_VAL                                                     'Antarctica%2FDavis'
         12        DO_FCALL                                          0  $4      
         13        CONCAT                                               ~5      $4, '%0A'
         14        ECHO                                                         ~5
   25    15        INIT_FCALL                                                   'timezone_version_get'
         16        DO_ICALL                                             $6      
         17        ECHO                                                         $6
         18        ECHO                                                         '%0A'
         19      > RETURN                                                       1

Function getstandardoffsetfromutc:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 16, Position 2 = 37
Branch analysis from position: 16
2 jumps found. (Code = 78) Position 1 = 17, Position 2 = 37
Branch analysis from position: 17
2 jumps found. (Code = 43) Position 1 = 20, Position 2 = 21
Branch analysis from position: 20
1 jumps found. (Code = 42) Position 1 = 16
Branch analysis from position: 16
Branch analysis from position: 21
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 37
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 37
filename:       /in/ZHfTQ
function name:  getStandardOffsetFromUTC
number of ops:  40
compiled vars:  !0 = $timezone, !1 = $transitions, !2 = $transition
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   RECV                                                 !0      
    5     1        NEW                                                  $3      'DateTimeZone'
          2        SEND_VAR_EX                                                  !0
          3        DO_FCALL                                          0          
          4        ASSIGN                                                       !0, $3
    6     5        INIT_FCALL                                                   'array_slice'
          6        INIT_METHOD_CALL                                             !0, 'getTransitions'
          7        DO_FCALL                                          0  $6      
          8        SEND_VAR                                                     $6
          9        SEND_VAL                                                     -3
         10        DO_ICALL                                             $7      
         11        ASSIGN                                                       !1, $7
    8    12        INIT_FCALL                                                   'array_reverse'
         13        SEND_VAR                                                     !1
         14        DO_ICALL                                             $9      
         15      > FE_RESET_R                                           $10     $9, ->37
         16    > > FE_FETCH_R                                                   $10, !2, ->37
   10    17    >   FETCH_DIM_R                                          ~11     !2, 'isdst'
         18        IS_EQUAL                                                     ~11, 1
         19      > JMPZ                                                         ~12, ->21
   12    20    > > JMP                                                          ->16
   15    21    >   INIT_FCALL                                                   'sprintf'
         22        SEND_VAL                                                     'UTC+%25%2B03d%3A%2502u'
         23        FETCH_DIM_R                                          ~13     !2, 'offset'
         24        DIV                                                  ~14     ~13, 3600
         25        SEND_VAL                                                     ~14
         26        INIT_FCALL                                                   'abs'
         27        FETCH_DIM_R                                          ~15     !2, 'offset'
         28        SEND_VAL                                                     ~15
         29        DO_ICALL                                             $16     
         30        MOD                                                  ~17     $16, 3600
         31        DIV                                                  ~18     ~17, 60
         32        SEND_VAL                                                     ~18
         33        DO_ICALL                                             $19     
         34        FE_FREE                                                      $10
         35      > RETURN                                                       $19
    8    36*       JMP                                                          ->16
         37    >   FE_FREE                                                      $10
   18    38      > RETURN                                                       <false>
   19    39*     > RETURN                                                       null

End of function getstandardoffsetfromutc

Generated using Vulcan Logic Dumper, using php 8.5.0


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171.08 ms | 1885 KiB | 21 Q