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<?php date_default_timezone_set(‘America/Sao_Paulo’); $date = new DateTime('2014-01-31'); $date->add(new DateInterval('P1M')); var_dump($date->format('Y-m-d')); $date->add(new DateInterval('P1M')); var_dump($date->format('Y-m-d'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/pWYaU
function name:  (null)
number of ops:  35
compiled vars:  !0 = $date
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'date_default_timezone_set'
          1        FETCH_CONSTANT                                   ~1      '%E2%80%98America'
          2        FETCH_CONSTANT                                   ~2      'Sao_Paulo%E2%80%99'
          3        DIV                                              ~3      ~1, ~2
          4        SEND_VAL                                                 ~3
          5        DO_ICALL                                                 
    3     6        NEW                                              $5      'DateTime'
          7        SEND_VAL_EX                                              '2014-01-31'
          8        DO_FCALL                                      0          
          9        ASSIGN                                                   !0, $5
    4    10        INIT_METHOD_CALL                                         !0, 'add'
         11        NEW                                              $8      'DateInterval'
         12        SEND_VAL_EX                                              'P1M'
         13        DO_FCALL                                      0          
         14        SEND_VAR_NO_REF_EX                                       $8
         15        DO_FCALL                                      0          
    5    16        INIT_FCALL                                               'var_dump'
         17        INIT_METHOD_CALL                                         !0, 'format'
         18        SEND_VAL_EX                                              'Y-m-d'
         19        DO_FCALL                                      0  $11     
         20        SEND_VAR                                                 $11
         21        DO_ICALL                                                 
    7    22        INIT_METHOD_CALL                                         !0, 'add'
         23        NEW                                              $13     'DateInterval'
         24        SEND_VAL_EX                                              'P1M'
         25        DO_FCALL                                      0          
         26        SEND_VAR_NO_REF_EX                                       $13
         27        DO_FCALL                                      0          
    8    28        INIT_FCALL                                               'var_dump'
         29        INIT_METHOD_CALL                                         !0, 'format'
         30        SEND_VAL_EX                                              'Y-m-d'
         31        DO_FCALL                                      0  $16     
         32        SEND_VAR                                                 $16
         33        DO_ICALL                                                 
         34      > RETURN                                                   1

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