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<?php $date = new DateTime('2014-01-31'); $interval = new DateInterval('1 month'); echo $date->format('Y-m-d')."\n"; $date->add("P$interval"); echo $date->format('Y-m-d')."\n"; $date->modify('-1 month'); echo $date->format('Y-m-d')."\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3i3bZ
function name:  (null)
number of ops:  32
compiled vars:  !0 = $date, !1 = $interval
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $2      'DateTime'
          1        SEND_VAL_EX                                              '2014-01-31'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $2
    3     4        NEW                                              $5      'DateInterval'
          5        SEND_VAL_EX                                              '1+month'
          6        DO_FCALL                                      0          
          7        ASSIGN                                                   !1, $5
    5     8        INIT_METHOD_CALL                                         !0, 'format'
          9        SEND_VAL_EX                                              'Y-m-d'
         10        DO_FCALL                                      0  $8      
         11        CONCAT                                           ~9      $8, '%0A'
         12        ECHO                                                     ~9
    6    13        INIT_METHOD_CALL                                         !0, 'add'
         14        NOP                                                      
         15        FAST_CONCAT                                      ~10     'P', !1
         16        SEND_VAL_EX                                              ~10
         17        DO_FCALL                                      0          
    7    18        INIT_METHOD_CALL                                         !0, 'format'
         19        SEND_VAL_EX                                              'Y-m-d'
         20        DO_FCALL                                      0  $12     
         21        CONCAT                                           ~13     $12, '%0A'
         22        ECHO                                                     ~13
    8    23        INIT_METHOD_CALL                                         !0, 'modify'
         24        SEND_VAL_EX                                              '-1+month'
         25        DO_FCALL                                      0          
    9    26        INIT_METHOD_CALL                                         !0, 'format'
         27        SEND_VAL_EX                                              'Y-m-d'
         28        DO_FCALL                                      0  $15     
         29        CONCAT                                           ~16     $15, '%0A'
         30        ECHO                                                     ~16
         31      > RETURN                                                   1

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