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<?php date_default_timezone_set('UTC'); $begin = new \DateTime('2012-06-25'); $end = new \DateTime('2012-07-27'); $interval = $begin->diff($end); $c = $interval; $seconds = (($end->getTimestamp()) - ($begin->getTimestamp())); // for DateTimeInterface::add() $base = new \DateTimeImmutable('2012-07-02'); $end = new \DateTime('2012-08-03'); $interval = $base->diff($end); $target = $base->add($interval); $comparison = ((new \DateTime())->setTimestamp((($base->getTimestamp()) + $seconds))); var_dump($target->format('Y-m-d')); var_dump($comparison->format('Y-m-d')); // for DateTimeInterval::sub() $base = new \DateTimeImmutable('2012-08-03'); $target = $base->sub($interval); $comparison = (new \DateTime())->setTimestamp($base->getTimestamp() - $seconds); var_dump($target->format('Y-m-d')); var_dump($comparison->format('Y-m-d')); var_dump($seconds, $interval, $c);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MKeKE
function name:  (null)
number of ops:  94
compiled vars:  !0 = $begin, !1 = $end, !2 = $interval, !3 = $c, !4 = $seconds, !5 = $base, !6 = $target, !7 = $comparison
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'date_default_timezone_set'
          1        SEND_VAL                                                     'UTC'
          2        DO_ICALL                                                     
    4     3        NEW                                                  $9      'DateTime'
          4        SEND_VAL_EX                                                  '2012-06-25'
          5        DO_FCALL                                          0          
          6        ASSIGN                                                       !0, $9
    5     7        NEW                                                  $12     'DateTime'
          8        SEND_VAL_EX                                                  '2012-07-27'
          9        DO_FCALL                                          0          
         10        ASSIGN                                                       !1, $12
    6    11        INIT_METHOD_CALL                                             !0, 'diff'
         12        SEND_VAR_EX                                                  !1
         13        DO_FCALL                                          0  $15     
         14        ASSIGN                                                       !2, $15
    7    15        ASSIGN                                                       !3, !2
    8    16        INIT_METHOD_CALL                                             !1, 'getTimestamp'
         17        DO_FCALL                                          0  $18     
         18        INIT_METHOD_CALL                                             !0, 'getTimestamp'
         19        DO_FCALL                                          0  $19     
         20        SUB                                                  ~20     $18, $19
         21        ASSIGN                                                       !4, ~20
   11    22        NEW                                                  $22     'DateTimeImmutable'
         23        SEND_VAL_EX                                                  '2012-07-02'
         24        DO_FCALL                                          0          
         25        ASSIGN                                                       !5, $22
   12    26        NEW                                                  $25     'DateTime'
         27        SEND_VAL_EX                                                  '2012-08-03'
         28        DO_FCALL                                          0          
         29        ASSIGN                                                       !1, $25
   13    30        INIT_METHOD_CALL                                             !5, 'diff'
         31        SEND_VAR_EX                                                  !1
         32        DO_FCALL                                          0  $28     
         33        ASSIGN                                                       !2, $28
   14    34        INIT_METHOD_CALL                                             !5, 'add'
         35        SEND_VAR_EX                                                  !2
         36        DO_FCALL                                          0  $30     
         37        ASSIGN                                                       !6, $30
   15    38        NEW                                                  $32     'DateTime'
         39        DO_FCALL                                          0          
         40        INIT_METHOD_CALL                                             $32, 'setTimestamp'
         41        INIT_METHOD_CALL                                             !5, 'getTimestamp'
         42        DO_FCALL                                          0  $34     
         43        ADD                                                  ~35     $34, !4
         44        SEND_VAL_EX                                                  ~35
         45        DO_FCALL                                          0  $36     
         46        ASSIGN                                                       !7, $36
   16    47        INIT_FCALL                                                   'var_dump'
         48        INIT_METHOD_CALL                                             !6, 'format'
         49        SEND_VAL_EX                                                  'Y-m-d'
         50        DO_FCALL                                          0  $38     
         51        SEND_VAR                                                     $38
         52        DO_ICALL                                                     
   17    53        INIT_FCALL                                                   'var_dump'
         54        INIT_METHOD_CALL                                             !7, 'format'
         55        SEND_VAL_EX                                                  'Y-m-d'
         56        DO_FCALL                                          0  $40     
         57        SEND_VAR                                                     $40
         58        DO_ICALL                                                     
   20    59        NEW                                                  $42     'DateTimeImmutable'
         60        SEND_VAL_EX                                                  '2012-08-03'
         61        DO_FCALL                                          0          
         62        ASSIGN                                                       !5, $42
   21    63        INIT_METHOD_CALL                                             !5, 'sub'
         64        SEND_VAR_EX                                                  !2
         65        DO_FCALL                                          0  $45     
         66        ASSIGN                                                       !6, $45
   22    67        NEW                                                  $47     'DateTime'
         68        DO_FCALL                                          0          
         69        INIT_METHOD_CALL                                             $47, 'setTimestamp'
         70        INIT_METHOD_CALL                                             !5, 'getTimestamp'
         71        DO_FCALL                                          0  $49     
         72        SUB                                                  ~50     $49, !4
         73        SEND_VAL_EX                                                  ~50
         74        DO_FCALL                                          0  $51     
         75        ASSIGN                                                       !7, $51
   23    76        INIT_FCALL                                                   'var_dump'
         77        INIT_METHOD_CALL                                             !6, 'format'
         78        SEND_VAL_EX                                                  'Y-m-d'
         79        DO_FCALL                                          0  $53     
         80        SEND_VAR                                                     $53
         81        DO_ICALL                                                     
   24    82        INIT_FCALL                                                   'var_dump'
         83        INIT_METHOD_CALL                                             !7, 'format'
         84        SEND_VAL_EX                                                  'Y-m-d'
         85        DO_FCALL                                          0  $55     
         86        SEND_VAR                                                     $55
         87        DO_ICALL                                                     
   25    88        INIT_FCALL                                                   'var_dump'
         89        SEND_VAR                                                     !4
         90        SEND_VAR                                                     !2
         91        SEND_VAR                                                     !3
         92        DO_ICALL                                                     
         93      > RETURN                                                       1

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