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<?php // creates new DateTime for the current timezone (UTC-5 in my case) $expiresAt = new \DateTimeImmutable('+3600 seconds', new \DateTimeZone('-5')); echo 'expires: ' . $expiresAt->format(\DateTimeInterface::ISO8601) . "\n"; $generatedAt = ($expiresAt->getTimestamp() - 3600); // creates new DateTime in UTC $createdAtTime = \DateTimeImmutable::createFromFormat('U', (string) $generatedAt); echo 'created: ' . $createdAtTime->format(\DateTimeInterface::ISO8601) . "\n"; $interval = $expiresAt->diff($createdAtTime); echo 'computed interval: ' . $interval->format('%R[%yy %mM %dd %hh %im %ss]') . "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/AZpkv
function name:  (null)
number of ops:  41
compiled vars:  !0 = $expiresAt, !1 = $generatedAt, !2 = $createdAtTime, !3 = $interval
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   NEW                                              $4      'DateTimeImmutable'
          1        SEND_VAL_EX                                              '%2B3600+seconds'
          2        NEW                                              $5      'DateTimeZone'
          3        SEND_VAL_EX                                              '-5'
          4        DO_FCALL                                      0          
          5        SEND_VAR_NO_REF_EX                                       $5
          6        DO_FCALL                                      0          
          7        ASSIGN                                                   !0, $4
    5     8        INIT_METHOD_CALL                                         !0, 'format'
          9        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsO'
         10        DO_FCALL                                      0  $9      
         11        CONCAT                                           ~10     'expires%3A+', $9
         12        CONCAT                                           ~11     ~10, '%0A'
         13        ECHO                                                     ~11
    7    14        INIT_METHOD_CALL                                         !0, 'getTimestamp'
         15        DO_FCALL                                      0  $12     
         16        SUB                                              ~13     $12, 3600
         17        ASSIGN                                                   !1, ~13
   10    18        INIT_STATIC_METHOD_CALL                                  'DateTimeImmutable', 'createFromFormat'
         19        SEND_VAL                                                 'U'
         20        CAST                                          6  ~15     !1
         21        SEND_VAL                                                 ~15
         22        DO_FCALL                                      0  $16     
         23        ASSIGN                                                   !2, $16
   11    24        INIT_METHOD_CALL                                         !2, 'format'
         25        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsO'
         26        DO_FCALL                                      0  $18     
         27        CONCAT                                           ~19     'created%3A+', $18
         28        CONCAT                                           ~20     ~19, '%0A'
         29        ECHO                                                     ~20
   13    30        INIT_METHOD_CALL                                         !0, 'diff'
         31        SEND_VAR_EX                                              !2
         32        DO_FCALL                                      0  $21     
         33        ASSIGN                                                   !3, $21
   14    34        INIT_METHOD_CALL                                         !3, 'format'
         35        SEND_VAL_EX                                              '%25R%5B%25yy+%25mM+%25dd+%25hh+%25im+%25ss%5D'
         36        DO_FCALL                                      0  $23     
         37        CONCAT                                           ~24     'computed+interval%3A+', $23
         38        CONCAT                                           ~25     ~24, '%0A'
         39        ECHO                                                     ~25
         40      > RETURN                                                   1

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