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<?php $n = '2017-2-1'; $start = \DateTime::createFromFormat('Y-m-d', $n); $end = new \DateTime($n . ' 1 month - 1 second'); $b = new \DateTime('2017-2-12'); var_dump($start->format('Y.M.d')); var_dump($end->format('Y.M.d')); var_dump($end->diff($b));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/q3sYj
function name:  (null)
number of ops:  34
compiled vars:  !0 = $n, !1 = $start, !2 = $end, !3 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '2017-2-1'
    5     1        INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
          2        SEND_VAL                                                 'Y-m-d'
          3        SEND_VAR                                                 !0
          4        DO_FCALL                                      0  $5      
          5        ASSIGN                                                   !1, $5
    6     6        NEW                                              $7      'DateTime'
          7        CONCAT                                           ~8      !0, '+1+month+-+1+second'
          8        SEND_VAL_EX                                              ~8
          9        DO_FCALL                                      0          
         10        ASSIGN                                                   !2, $7
    8    11        NEW                                              $11     'DateTime'
         12        SEND_VAL_EX                                              '2017-2-12'
         13        DO_FCALL                                      0          
         14        ASSIGN                                                   !3, $11
   10    15        INIT_FCALL                                               'var_dump'
         16        INIT_METHOD_CALL                                         !1, 'format'
         17        SEND_VAL_EX                                              'Y.M.d'
         18        DO_FCALL                                      0  $14     
         19        SEND_VAR                                                 $14
         20        DO_ICALL                                                 
   11    21        INIT_FCALL                                               'var_dump'
         22        INIT_METHOD_CALL                                         !2, 'format'
         23        SEND_VAL_EX                                              'Y.M.d'
         24        DO_FCALL                                      0  $16     
         25        SEND_VAR                                                 $16
         26        DO_ICALL                                                 
   12    27        INIT_FCALL                                               'var_dump'
         28        INIT_METHOD_CALL                                         !2, 'diff'
         29        SEND_VAR_EX                                              !3
         30        DO_FCALL                                      0  $18     
         31        SEND_VAR                                                 $18
         32        DO_ICALL                                                 
         33      > RETURN                                                   1

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