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<?php $ts = strtotime('2010-01-31 +1 month'); echo date('Y-m-d', $ts); echo "\n"; $dt = new \DateTime('2010-01-31'); $dt->add(new \DateInterval('P1M')); echo $dt->format('Y-m-d'); echo "\n"; $ts = strtotime('2010-01-05 +1 month'); echo date('Y-m-d', $ts); echo "\n"; $dt = new \DateTime('2010-01-05'); $dt->add(new \DateInterval('P1M')); echo $dt->format('Y-m-d'); echo "\n"; $ts = strtotime('2010-02-31'); echo date('Y-m-d', $ts);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rHdEJ
function name:  (null)
number of ops:  60
compiled vars:  !0 = $ts, !1 = $dt
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'strtotime'
          1        SEND_VAL                                                 '2010-01-31+%2B1+month'
          2        DO_ICALL                                         $2      
          3        ASSIGN                                                   !0, $2
    3     4        INIT_FCALL                                               'date'
          5        SEND_VAL                                                 'Y-m-d'
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                         $4      
          8        ECHO                                                     $4
    4     9        ECHO                                                     '%0A'
    5    10        NEW                                              $5      'DateTime'
         11        SEND_VAL_EX                                              '2010-01-31'
         12        DO_FCALL                                      0          
         13        ASSIGN                                                   !1, $5
    6    14        INIT_METHOD_CALL                                         !1, 'add'
         15        NEW                                              $8      'DateInterval'
         16        SEND_VAL_EX                                              'P1M'
         17        DO_FCALL                                      0          
         18        SEND_VAR_NO_REF_EX                                       $8
         19        DO_FCALL                                      0          
    7    20        INIT_METHOD_CALL                                         !1, 'format'
         21        SEND_VAL_EX                                              'Y-m-d'
         22        DO_FCALL                                      0  $11     
         23        ECHO                                                     $11
    8    24        ECHO                                                     '%0A'
    9    25        INIT_FCALL                                               'strtotime'
         26        SEND_VAL                                                 '2010-01-05+%2B1+month'
         27        DO_ICALL                                         $12     
         28        ASSIGN                                                   !0, $12
   10    29        INIT_FCALL                                               'date'
         30        SEND_VAL                                                 'Y-m-d'
         31        SEND_VAR                                                 !0
         32        DO_ICALL                                         $14     
         33        ECHO                                                     $14
   11    34        ECHO                                                     '%0A'
   12    35        NEW                                              $15     'DateTime'
         36        SEND_VAL_EX                                              '2010-01-05'
         37        DO_FCALL                                      0          
         38        ASSIGN                                                   !1, $15
   13    39        INIT_METHOD_CALL                                         !1, 'add'
         40        NEW                                              $18     'DateInterval'
         41        SEND_VAL_EX                                              'P1M'
         42        DO_FCALL                                      0          
         43        SEND_VAR_NO_REF_EX                                       $18
         44        DO_FCALL                                      0          
   14    45        INIT_METHOD_CALL                                         !1, 'format'
         46        SEND_VAL_EX                                              'Y-m-d'
         47        DO_FCALL                                      0  $21     
         48        ECHO                                                     $21
   15    49        ECHO                                                     '%0A'
   16    50        INIT_FCALL                                               'strtotime'
         51        SEND_VAL                                                 '2010-02-31'
         52        DO_ICALL                                         $22     
         53        ASSIGN                                                   !0, $22
   17    54        INIT_FCALL                                               'date'
         55        SEND_VAL                                                 'Y-m-d'
         56        SEND_VAR                                                 !0
         57        DO_ICALL                                         $24     
         58        ECHO                                                     $24
         59      > RETURN                                                   1

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