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<?php $id = '287080904421'; // Extract the "hidden" date part from the ID $date = substr($id, 1, 6); // Arbitrary decision // if year < 70, then assume 21st century // else assume 20th century if (substr($date, 0, 1) < 7) { $date = '20' . $date; } else { $date = '19' . $date; } $birthday = DateTime::createFromFormat('Ymd', $date); echo $birthday->format('Y-m-d'); $now = new DateTime(); $diff = $now->diff($birthday); var_dump($diff);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 14, Position 2 = 17
Branch analysis from position: 14
1 jumps found. (Code = 42) Position 1 = 19
Branch analysis from position: 19
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 17
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KQfgP
function name:  (null)
number of ops:  39
compiled vars:  !0 = $id, !1 = $date, !2 = $birthday, !3 = $now, !4 = $diff
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '287080904421'
    5     1        INIT_FCALL                                               'substr'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 1
          4        SEND_VAL                                                 6
          5        DO_ICALL                                         $6      
          6        ASSIGN                                                   !1, $6
    9     7        INIT_FCALL                                               'substr'
          8        SEND_VAR                                                 !1
          9        SEND_VAL                                                 0
         10        SEND_VAL                                                 1
         11        DO_ICALL                                         $8      
         12        IS_SMALLER                                               $8, 7
         13      > JMPZ                                                     ~9, ->17
   10    14    >   CONCAT                                           ~10     '20', !1
         15        ASSIGN                                                   !1, ~10
         16      > JMP                                                      ->19
   12    17    >   CONCAT                                           ~12     '19', !1
         18        ASSIGN                                                   !1, ~12
   14    19    >   INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
         20        SEND_VAL                                                 'Ymd'
         21        SEND_VAR                                                 !1
         22        DO_FCALL                                      0  $14     
         23        ASSIGN                                                   !2, $14
   15    24        INIT_METHOD_CALL                                         !2, 'format'
         25        SEND_VAL_EX                                              'Y-m-d'
         26        DO_FCALL                                      0  $16     
         27        ECHO                                                     $16
   17    28        NEW                                              $17     'DateTime'
         29        DO_FCALL                                      0          
         30        ASSIGN                                                   !3, $17
   18    31        INIT_METHOD_CALL                                         !3, 'diff'
         32        SEND_VAR_EX                                              !2
         33        DO_FCALL                                      0  $20     
         34        ASSIGN                                                   !4, $20
   19    35        INIT_FCALL                                               'var_dump'
         36        SEND_VAR                                                 !4
         37        DO_ICALL                                                 
         38      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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