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<?php $datetime1 = DateTime::createFromFormat('Ymd', '20150104')->format('Y-m-d'); $datetime2 = DateTime::createFromFormat('Ymd', '20160104')->format('Y-m-d'); echo "<pre>"; echo $datetime1->diff($datetime2)->format('%R%y');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iOPiM
function name:  (null)
number of ops:  25
compiled vars:  !0 = $datetime1, !1 = $datetime2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
          1        SEND_VAL                                                 'Ymd'
          2        SEND_VAL                                                 '20150104'
          3        DO_FCALL                                      0  $2      
          4        INIT_METHOD_CALL                                         $2, 'format'
          5        SEND_VAL_EX                                              'Y-m-d'
          6        DO_FCALL                                      0  $3      
          7        ASSIGN                                                   !0, $3
    4     8        INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
          9        SEND_VAL                                                 'Ymd'
         10        SEND_VAL                                                 '20160104'
         11        DO_FCALL                                      0  $5      
         12        INIT_METHOD_CALL                                         $5, 'format'
         13        SEND_VAL_EX                                              'Y-m-d'
         14        DO_FCALL                                      0  $6      
         15        ASSIGN                                                   !1, $6
    6    16        ECHO                                                     '%3Cpre%3E'
    7    17        INIT_METHOD_CALL                                         !0, 'diff'
         18        SEND_VAR_EX                                              !1
         19        DO_FCALL                                      0  $8      
         20        INIT_METHOD_CALL                                         $8, 'format'
         21        SEND_VAL_EX                                              '%25R%25y'
         22        DO_FCALL                                      0  $9      
         23        ECHO                                                     $9
         24      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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