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<?php $obj = new DateTimeImmutable('2021-03-18 14:38:45.008455'); $time = (float) $obj->format('U.u'); $recreated = DateTimeImmutable::createFromFormat('U.u', json_encode($time)); var_dump($obj, $recreated, $recreated == $obj); $json = json_encode(['expire'=> $time] , JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_THROW_ON_ERROR); $afterDecoded = json_decode($json, true, 512, JSON_THROW_ON_ERROR); $time = $afterDecoded['expire']; $recreated = DateTimeImmutable::createFromFormat('U.u', json_encode($time)); var_dump($obj, $recreated, $recreated == $obj);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/cAFijB
function name:  (null)
number of ops:  53
compiled vars:  !0 = $obj, !1 = $time, !2 = $recreated, !3 = $json, !4 = $afterDecoded
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $5      'DateTimeImmutable'
          1        SEND_VAL_EX                                              '2021-03-18+14%3A38%3A45.008455'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $5
    4     4        INIT_METHOD_CALL                                         !0, 'format'
          5        SEND_VAL_EX                                              'U.u'
          6        DO_FCALL                                      0  $8      
          7        CAST                                          5  ~9      $8
          8        ASSIGN                                                   !1, ~9
    6     9        INIT_STATIC_METHOD_CALL                                  'DateTimeImmutable', 'createFromFormat'
         10        SEND_VAL                                                 'U.u'
         11        INIT_FCALL                                               'json_encode'
         12        SEND_VAR                                                 !1
         13        DO_ICALL                                         $11     
         14        SEND_VAR                                                 $11
         15        DO_FCALL                                      0  $12     
         16        ASSIGN                                                   !2, $12
    8    17        INIT_FCALL                                               'var_dump'
         18        SEND_VAR                                                 !0
         19        SEND_VAR                                                 !2
         20        IS_EQUAL                                         ~14     !2, !0
         21        SEND_VAL                                                 ~14
         22        DO_ICALL                                                 
   10    23        INIT_FCALL                                               'json_encode'
         24        INIT_ARRAY                                       ~16     !1, 'expire'
         25        SEND_VAL                                                 ~16
         26        SEND_VAL                                                 4194624
         27        DO_ICALL                                         $17     
         28        ASSIGN                                                   !3, $17
   12    29        INIT_FCALL                                               'json_decode'
         30        SEND_VAR                                                 !3
         31        SEND_VAL                                                 <true>
         32        SEND_VAL                                                 512
         33        SEND_VAL                                                 4194304
         34        DO_ICALL                                         $19     
         35        ASSIGN                                                   !4, $19
   14    36        FETCH_DIM_R                                      ~21     !4, 'expire'
         37        ASSIGN                                                   !1, ~21
   17    38        INIT_STATIC_METHOD_CALL                                  'DateTimeImmutable', 'createFromFormat'
         39        SEND_VAL                                                 'U.u'
         40        INIT_FCALL                                               'json_encode'
         41        SEND_VAR                                                 !1
         42        DO_ICALL                                         $23     
         43        SEND_VAR                                                 $23
         44        DO_FCALL                                      0  $24     
         45        ASSIGN                                                   !2, $24
   19    46        INIT_FCALL                                               'var_dump'
         47        SEND_VAR                                                 !0
         48        SEND_VAR                                                 !2
         49        IS_EQUAL                                         ~26     !2, !0
         50        SEND_VAL                                                 ~26
         51        DO_ICALL                                                 
         52      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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