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<?php $nbMonth = 3; $now = new \DateTime('2017-01-01 11:55:00'); $datePeriodStart = $now->sub(new \DateInterval('P'.$nbMonth.'M')); echo $datePeriodStart->format('Y-m-d H:i:s') . "\n"; $datePeriodStart->setDate($datePeriodStart->format('Y'), $datePeriodStart->format('n'), 1); $datePeriodStart->setTime(0,0); echo $datePeriodStart->format('Y-m-d H:i:s') . "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/RmFsd
function name:  (null)
number of ops:  40
compiled vars:  !0 = $nbMonth, !1 = $now, !2 = $datePeriodStart
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 3
    4     1        NEW                                              $4      'DateTime'
          2        SEND_VAL_EX                                              '2017-01-01+11%3A55%3A00'
          3        DO_FCALL                                      0          
          4        ASSIGN                                                   !1, $4
    5     5        INIT_METHOD_CALL                                         !1, 'sub'
          6        NEW                                              $7      'DateInterval'
          7        CONCAT                                           ~8      'P', !0
          8        CONCAT                                           ~9      ~8, 'M'
          9        SEND_VAL_EX                                              ~9
         10        DO_FCALL                                      0          
         11        SEND_VAR_NO_REF_EX                                       $7
         12        DO_FCALL                                      0  $11     
         13        ASSIGN                                                   !2, $11
    6    14        INIT_METHOD_CALL                                         !2, 'format'
         15        SEND_VAL_EX                                              'Y-m-d+H%3Ai%3As'
         16        DO_FCALL                                      0  $13     
         17        CONCAT                                           ~14     $13, '%0A'
         18        ECHO                                                     ~14
    8    19        INIT_METHOD_CALL                                         !2, 'setDate'
         20        INIT_METHOD_CALL                                         !2, 'format'
         21        SEND_VAL_EX                                              'Y'
         22        DO_FCALL                                      0  $15     
         23        SEND_VAR_NO_REF_EX                                       $15
         24        INIT_METHOD_CALL                                         !2, 'format'
         25        SEND_VAL_EX                                              'n'
         26        DO_FCALL                                      0  $16     
         27        SEND_VAR_NO_REF_EX                                       $16
         28        SEND_VAL_EX                                              1
         29        DO_FCALL                                      0          
    9    30        INIT_METHOD_CALL                                         !2, 'setTime'
         31        SEND_VAL_EX                                              0
         32        SEND_VAL_EX                                              0
         33        DO_FCALL                                      0          
   10    34        INIT_METHOD_CALL                                         !2, 'format'
         35        SEND_VAL_EX                                              'Y-m-d+H%3Ai%3As'
         36        DO_FCALL                                      0  $19     
         37        CONCAT                                           ~20     $19, '%0A'
         38        ECHO                                                     ~20
         39      > RETURN                                                   1

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