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<?php class MyDateTime extends \DateTime { public function add($interval) { $oldDay = (int)$this->format('d'); $this->setDate((int)$this->format('Y'), (int)$this->format('m'), 1); parent::add($interval); $maxDay = (int)$this->format('t'); if($oldDay > $maxDay){ $this->setDate((int)$this->format('Y'), (int)$this->format('m'), $maxDay); } else { $this->setDate((int)$this->format('Y'), (int)$this->format('m'), $oldDay); } return $this; } public function sub($interval) { $oldDay = (int)$this->format('d'); $this->setDate((int)$this->format('Y'), (int)$this->format('m'), 1); parent::sub($interval); $maxDay = (int)$this->format('t'); if($oldDay > $maxDay){ $this->setDate((int)$this->format('Y'), (int)$this->format('m'), $maxDay); } else { $this->setDate((int)$this->format('Y'), (int)$this->format('m'), $oldDay); } return $this; } public function diff($dateTime2, $absolute = false) { if((int)$this->format('t') > (int)$dateTime2->format('t')){ $this->setDate((int)$this->format('Y'), (int)$this->format('m'), (int)$dateTime2->format('t')); } if((int)$this->format('t') < (int)$dateTime2->format('t')){ $dateTime2->setDate((int)$dateTime2->format('Y'), (int)$dateTime2->format('m'), (int)$this->format('t')); } return parent::diff($dateTime2, $absolute); } } $myDateTime1 = new MyDateTime('30th November 2012'); $myDateTime2 = new MyDateTime('28th February 2013'); $interval = $myDateTime2->diff($myDateTime1, true); var_dump($interval);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7qkrn
function name:  (null)
number of ops:  17
compiled vars:  !0 = $myDateTime1, !1 = $myDateTime2, !2 = $interval
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   44     0  E >   NEW                                              $3      'MyDateTime'
          1        SEND_VAL_EX                                              '30th+November+2012'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $3
   45     4        NEW                                              $6      'MyDateTime'
          5        SEND_VAL_EX                                              '28th+February+2013'
          6        DO_FCALL                                      0          
          7        ASSIGN                                                   !1, $6
   46     8        INIT_METHOD_CALL                                         !1, 'diff'
          9        SEND_VAR_EX                                              !0
         10        SEND_VAL_EX                                              <true>
         11        DO_FCALL                                      0  $9      
         12        ASSIGN                                                   !2, $9
   47    13        INIT_FCALL                                               'var_dump'
         14        SEND_VAR                                                 !2
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Class MyDateTime:
Function add:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 29, Position 2 = 43
Branch analysis from position: 29
1 jumps found. (Code = 42) Position 1 = 56
Branch analysis from position: 56
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 43
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7qkrn
function name:  add
number of ops:  59
compiled vars:  !0 = $interval, !1 = $oldDay, !2 = $maxDay
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
    6     1        INIT_METHOD_CALL                                         'format'
          2        SEND_VAL_EX                                              'd'
          3        DO_FCALL                                      0  $3      
          4        CAST                                          4  ~4      $3
          5        ASSIGN                                                   !1, ~4
    7     6        INIT_METHOD_CALL                                         'setDate'
          7        INIT_METHOD_CALL                                         'format'
          8        SEND_VAL_EX                                              'Y'
          9        DO_FCALL                                      0  $6      
         10        CAST                                          4  ~7      $6
         11        SEND_VAL_EX                                              ~7
         12        INIT_METHOD_CALL                                         'format'
         13        SEND_VAL_EX                                              'm'
         14        DO_FCALL                                      0  $8      
         15        CAST                                          4  ~9      $8
         16        SEND_VAL_EX                                              ~9
         17        SEND_VAL_EX                                              1
         18        DO_FCALL                                      0          
    8    19        INIT_STATIC_METHOD_CALL                                  'add'
         20        SEND_VAR_EX                                              !0
         21        DO_FCALL                                      0          
    9    22        INIT_METHOD_CALL                                         'format'
         23        SEND_VAL_EX                                              't'
         24        DO_FCALL                                      0  $12     
         25        CAST                                          4  ~13     $12
         26        ASSIGN                                                   !2, ~13
   10    27        IS_SMALLER                                               !2, !1
         28      > JMPZ                                                     ~15, ->43
   11    29    >   INIT_METHOD_CALL                                         'setDate'
         30        INIT_METHOD_CALL                                         'format'
         31        SEND_VAL_EX                                              'Y'
         32        DO_FCALL                                      0  $16     
         33        CAST                                          4  ~17     $16
         34        SEND_VAL_EX                                              ~17
         35        INIT_METHOD_CALL                                         'format'
         36        SEND_VAL_EX                                              'm'
         37        DO_FCALL                                      0  $18     
         38        CAST                                          4  ~19     $18
         39        SEND_VAL_EX                                              ~19
         40        SEND_VAR_EX                                              !2
         41        DO_FCALL                                      0          
         42      > JMP                                                      ->56
   13    43    >   INIT_METHOD_CALL                                         'setDate'
         44        INIT_METHOD_CALL                                         'format'
         45        SEND_VAL_EX                                              'Y'
         46        DO_FCALL                                      0  $21     
         47        CAST                                          4  ~22     $21
         48        SEND_VAL_EX                                              ~22
         49        INIT_METHOD_CALL                                         'format'
         50        SEND_VAL_EX                                              'm'
         51        DO_FCALL                                      0  $23     
         52        CAST                                          4  ~24     $23
         53        SEND_VAL_EX                                              ~24
         54        SEND_VAR_EX                                              !1
         55        DO_FCALL                                      0          
   15    56    >   FETCH_THIS                                       ~26     
         57      > RETURN                                                   ~26
   16    58*     > RETURN                                                   null

End of function add

Function sub:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 29, Position 2 = 43
Branch analysis from position: 29
1 jumps found. (Code = 42) Position 1 = 56
Branch analysis from position: 56
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 43
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7qkrn
function name:  sub
number of ops:  59
compiled vars:  !0 = $interval, !1 = $oldDay, !2 = $maxDay
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   18     0  E >   RECV                                             !0      
   20     1        INIT_METHOD_CALL                                         'format'
          2        SEND_VAL_EX                                              'd'
          3        DO_FCALL                                      0  $3      
          4        CAST                                          4  ~4      $3
          5        ASSIGN                                                   !1, ~4
   21     6        INIT_METHOD_CALL                                         'setDate'
          7        INIT_METHOD_CALL                                         'format'
          8        SEND_VAL_EX                                              'Y'
          9        DO_FCALL                                      0  $6      
         10        CAST                                          4  ~7      $6
         11        SEND_VAL_EX                                              ~7
         12        INIT_METHOD_CALL                                         'format'
         13        SEND_VAL_EX                                              'm'
         14        DO_FCALL                                      0  $8      
         15        CAST                                          4  ~9      $8
         16        SEND_VAL_EX                                              ~9
         17        SEND_VAL_EX                                              1
         18        DO_FCALL                                      0          
   22    19        INIT_STATIC_METHOD_CALL                                  'sub'
         20        SEND_VAR_EX                                              !0
         21        DO_FCALL                                      0          
   23    22        INIT_METHOD_CALL                                         'format'
         23        SEND_VAL_EX                                              't'
         24        DO_FCALL                                      0  $12     
         25        CAST                                          4  ~13     $12
         26        ASSIGN                                                   !2, ~13
   24    27        IS_SMALLER                                               !2, !1
         28      > JMPZ                                                     ~15, ->43
   25    29    >   INIT_METHOD_CALL                                         'setDate'
         30        INIT_METHOD_CALL                                         'format'
         31        SEND_VAL_EX                                              'Y'
         32        DO_FCALL                                      0  $16     
         33        CAST                                          4  ~17     $16
         34        SEND_VAL_EX                                              ~17
         35        INIT_METHOD_CALL                                         'format'
         36        SEND_VAL_EX                                              'm'
         37        DO_FCALL                                      0  $18     
         38        CAST                                          4  ~19     $18
         39        SEND_VAL_EX                                              ~19
         40        SEND_VAR_EX                                              !2
         41        DO_FCALL                                      0          
         42      > JMP                                                      ->56
   27    43    >   INIT_METHOD_CALL                                         'setDate'
         44        INIT_METHOD_CALL                                         'format'
         45        SEND_VAL_EX                                              'Y'
         46        DO_FCALL                                      0  $21     
         47        CAST                                          4  ~22     $21
         48        SEND_VAL_EX                                              ~22
         49        INIT_METHOD_CALL                                         'format'
         50        SEND_VAL_EX                                              'm'
         51        DO_FCALL                                      0  $23     
         52        CAST                                          4  ~24     $23
         53        SEND_VAL_EX                                              ~24
         54        SEND_VAR_EX                                              !1
         55        DO_FCALL                                      0          
   29    56    >   FETCH_THIS                                       ~26     
         57      > RETURN                                                   ~26
   30    58*     > RETURN                                                   null

End of function sub

Function diff:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 12, Position 2 = 29
Branch analysis from position: 12
2 jumps found. (Code = 43) Position 1 = 39, Position 2 = 56
Branch analysis from position: 39
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 56
Branch analysis from position: 29
filename:       /in/7qkrn
function name:  diff
number of ops:  62
compiled vars:  !0 = $dateTime2, !1 = $absolute
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   32     0  E >   RECV                                             !0      
          1        RECV_INIT                                        !1      <false>
   34     2        INIT_METHOD_CALL                                         'format'
          3        SEND_VAL_EX                                              't'
          4        DO_FCALL                                      0  $2      
          5        CAST                                          4  ~3      $2
          6        INIT_METHOD_CALL                                         !0, 'format'
          7        SEND_VAL_EX                                              't'
          8        DO_FCALL                                      0  $4      
          9        CAST                                          4  ~5      $4
         10        IS_SMALLER                                               ~5, ~3
         11      > JMPZ                                                     ~6, ->29
   35    12    >   INIT_METHOD_CALL                                         'setDate'
         13        INIT_METHOD_CALL                                         'format'
         14        SEND_VAL_EX                                              'Y'
         15        DO_FCALL                                      0  $7      
         16        CAST                                          4  ~8      $7
         17        SEND_VAL_EX                                              ~8
         18        INIT_METHOD_CALL                                         'format'
         19        SEND_VAL_EX                                              'm'
         20        DO_FCALL                                      0  $9      
         21        CAST                                          4  ~10     $9
         22        SEND_VAL_EX                                              ~10
         23        INIT_METHOD_CALL                                         !0, 'format'
         24        SEND_VAL_EX                                              't'
         25        DO_FCALL                                      0  $11     
         26        CAST                                          4  ~12     $11
         27        SEND_VAL_EX                                              ~12
         28        DO_FCALL                                      0          
   37    29    >   INIT_METHOD_CALL                                         'format'
         30        SEND_VAL_EX                                              't'
         31        DO_FCALL                                      0  $14     
         32        CAST                                          4  ~15     $14
         33        INIT_METHOD_CALL                                         !0, 'format'
         34        SEND_VAL_EX                                              't'
         35        DO_FCALL                                      0  $16     
         36        CAST                                          4  ~17     $16
         37        IS_SMALLER                                               ~15, ~17
         38      > JMPZ                                                     ~18, ->56
   38    39    >   INIT_METHOD_CALL                                         !0, 'setDate'
         40        INIT_METHOD_CALL                                         !0, 'format'
         41        SEND_VAL_EX                                              'Y'
         42        DO_FCALL                                      0  $19     
         43        CAST                                          4  ~20     $19
         44        SEND_VAL_EX                                              ~20
         45        INIT_METHOD_CALL                                         !0, 'format'
         46        SEND_VAL_EX                                              'm'
         47        DO_FCALL                                      0  $21     
         48        CAST                                          4  ~22     $21
         49        SEND_VAL_EX                                              ~22
         50        INIT_METHOD_CALL                                         'format'
         51        SEND_VAL_EX                                              't'
         52        DO_FCALL                                      0  $23     
         53        CAST                                          4  ~24     $23
         54        SEND_VAL_EX                                              ~24
         55        DO_FCALL                                      0          
   40    56    >   INIT_STATIC_METHOD_CALL                                  'diff'
         57        SEND_VAR_EX                                              !0
         58        SEND_VAR_EX                                              !1
         59        DO_FCALL                                      0  $26     
         60      > RETURN                                                   $26
   41    61*     > RETURN                                                   null

End of function diff

End of class MyDateTime.

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