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<?php $date = new DateTimeImmutable('@'.'1572764400'); var_dump($date->getTimestamp()); var_dump($date->setTimezone(new DateTimeZone('America/Chicago'))->getTimestamp()); var_dump($date->setTimezone(new DateTimeZone('America/Chicago'))->modify('+3599 seconds')->getTimestamp()); var_dump($date->setTimezone(new DateTimeZone('America/Chicago'))->modify('+3600 seconds')->getTimestamp()); var_dump($date->setTimezone(new DateTimeZone('America/Chicago'))->modify('+3601 seconds')->getTimestamp());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TCEIF
function name:  (null)
number of ops:  63
compiled vars:  !0 = $date
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'DateTimeImmutable'
          1        SEND_VAL_EX                                              '%401572764400'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
    5     4        INIT_FCALL                                               'var_dump'
          5        INIT_METHOD_CALL                                         !0, 'getTimestamp'
          6        DO_FCALL                                      0  $4      
          7        SEND_VAR                                                 $4
          8        DO_ICALL                                                 
    6     9        INIT_FCALL                                               'var_dump'
         10        INIT_METHOD_CALL                                         !0, 'setTimezone'
         11        NEW                                              $6      'DateTimeZone'
         12        SEND_VAL_EX                                              'America%2FChicago'
         13        DO_FCALL                                      0          
         14        SEND_VAR_NO_REF_EX                                       $6
         15        DO_FCALL                                      0  $8      
         16        INIT_METHOD_CALL                                         $8, 'getTimestamp'
         17        DO_FCALL                                      0  $9      
         18        SEND_VAR                                                 $9
         19        DO_ICALL                                                 
    7    20        INIT_FCALL                                               'var_dump'
         21        INIT_METHOD_CALL                                         !0, 'setTimezone'
         22        NEW                                              $11     'DateTimeZone'
         23        SEND_VAL_EX                                              'America%2FChicago'
         24        DO_FCALL                                      0          
         25        SEND_VAR_NO_REF_EX                                       $11
         26        DO_FCALL                                      0  $13     
         27        INIT_METHOD_CALL                                         $13, 'modify'
         28        SEND_VAL_EX                                              '%2B3599+seconds'
         29        DO_FCALL                                      0  $14     
         30        INIT_METHOD_CALL                                         $14, 'getTimestamp'
         31        DO_FCALL                                      0  $15     
         32        SEND_VAR                                                 $15
         33        DO_ICALL                                                 
    8    34        INIT_FCALL                                               'var_dump'
         35        INIT_METHOD_CALL                                         !0, 'setTimezone'
         36        NEW                                              $17     'DateTimeZone'
         37        SEND_VAL_EX                                              'America%2FChicago'
         38        DO_FCALL                                      0          
         39        SEND_VAR_NO_REF_EX                                       $17
         40        DO_FCALL                                      0  $19     
         41        INIT_METHOD_CALL                                         $19, 'modify'
         42        SEND_VAL_EX                                              '%2B3600+seconds'
         43        DO_FCALL                                      0  $20     
         44        INIT_METHOD_CALL                                         $20, 'getTimestamp'
         45        DO_FCALL                                      0  $21     
         46        SEND_VAR                                                 $21
         47        DO_ICALL                                                 
    9    48        INIT_FCALL                                               'var_dump'
         49        INIT_METHOD_CALL                                         !0, 'setTimezone'
         50        NEW                                              $23     'DateTimeZone'
         51        SEND_VAL_EX                                              'America%2FChicago'
         52        DO_FCALL                                      0          
         53        SEND_VAR_NO_REF_EX                                       $23
         54        DO_FCALL                                      0  $25     
         55        INIT_METHOD_CALL                                         $25, 'modify'
         56        SEND_VAL_EX                                              '%2B3601+seconds'
         57        DO_FCALL                                      0  $26     
         58        INIT_METHOD_CALL                                         $26, 'getTimestamp'
         59        DO_FCALL                                      0  $27     
         60        SEND_VAR                                                 $27
         61        DO_ICALL                                                 
         62      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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