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<?php $date = new DateTime('2016-05-31'); echo $date->format('Y-m-d') . PHP_EOL; echo $date->modify('-1 month')->format('Y-m-d') . PHP_EOL; echo PHP_EOL; $date = new DateTime('2016-05-31'); echo $date->format('Y-m-d') . PHP_EOL; echo $date->modify('+1 month')->format('Y-m-d') . PHP_EOL;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/g0deg
function name:  (null)
number of ops:  36
compiled vars:  !0 = $date
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'DateTime'
          1        SEND_VAL_EX                                              '2016-05-31'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
    4     4        INIT_METHOD_CALL                                         !0, 'format'
          5        SEND_VAL_EX                                              'Y-m-d'
          6        DO_FCALL                                      0  $4      
          7        CONCAT                                           ~5      $4, '%0A'
          8        ECHO                                                     ~5
    5     9        INIT_METHOD_CALL                                         !0, 'modify'
         10        SEND_VAL_EX                                              '-1+month'
         11        DO_FCALL                                      0  $6      
         12        INIT_METHOD_CALL                                         $6, 'format'
         13        SEND_VAL_EX                                              'Y-m-d'
         14        DO_FCALL                                      0  $7      
         15        CONCAT                                           ~8      $7, '%0A'
         16        ECHO                                                     ~8
    7    17        ECHO                                                     '%0A'
    9    18        NEW                                              $9      'DateTime'
         19        SEND_VAL_EX                                              '2016-05-31'
         20        DO_FCALL                                      0          
         21        ASSIGN                                                   !0, $9
   10    22        INIT_METHOD_CALL                                         !0, 'format'
         23        SEND_VAL_EX                                              'Y-m-d'
         24        DO_FCALL                                      0  $12     
         25        CONCAT                                           ~13     $12, '%0A'
         26        ECHO                                                     ~13
   11    27        INIT_METHOD_CALL                                         !0, 'modify'
         28        SEND_VAL_EX                                              '%2B1+month'
         29        DO_FCALL                                      0  $14     
         30        INIT_METHOD_CALL                                         $14, 'format'
         31        SEND_VAL_EX                                              'Y-m-d'
         32        DO_FCALL                                      0  $15     
         33        CONCAT                                           ~16     $15, '%0A'
         34        ECHO                                                     ~16
         35      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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