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<?php $start = new DateTime('2016-04-20 00:37:15'); $end = clone $start; $end = $end->modify('+7 days'); $diff = $end->diff($start); echo $diff->format('%d days') . PHP_EOL; var_dump($start, $end, $diff);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/OHu2u
function name:  (null)
number of ops:  25
compiled vars:  !0 = $start, !1 = $end, !2 = $diff
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $3      'DateTime'
          1        SEND_VAL_EX                                              '2016-04-20+00%3A37%3A15'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $3
    4     4        CLONE                                            ~6      !0
          5        ASSIGN                                                   !1, ~6
    5     6        INIT_METHOD_CALL                                         !1, 'modify'
          7        SEND_VAL_EX                                              '%2B7+days'
          8        DO_FCALL                                      0  $8      
          9        ASSIGN                                                   !1, $8
    6    10        INIT_METHOD_CALL                                         !1, 'diff'
         11        SEND_VAR_EX                                              !0
         12        DO_FCALL                                      0  $10     
         13        ASSIGN                                                   !2, $10
    8    14        INIT_METHOD_CALL                                         !2, 'format'
         15        SEND_VAL_EX                                              '%25d+days'
         16        DO_FCALL                                      0  $12     
         17        CONCAT                                           ~13     $12, '%0A'
         18        ECHO                                                     ~13
   10    19        INIT_FCALL                                               'var_dump'
         20        SEND_VAR                                                 !0
         21        SEND_VAR                                                 !1
         22        SEND_VAR                                                 !2
         23        DO_ICALL                                                 
         24      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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