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<?php //DateTime $date = new DateTime('2008-07-01T22:35:17+08:00'); $mutable = DateTime::createFromFormat( 'Y-m-d H:i:s', '2008-07-01 00:00:00', $date->getTimeZone() ); //DateTimeImmutable $immutable = DateTimeImmutable::createFromFormat( 'Y-m-d H:i:s', '2008-07-01 00:00:00', $date->getTimeZone() ); var_dump([ 'Date Original' => $date->format(DATE_ATOM), 'DateTime::createFromFormat' => $mutable->format(DATE_ATOM), 'DateTimeImmutable::createFromFormat' => $immutable->format(DATE_ATOM), ]);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dRlSQ
function name:  (null)
number of ops:  36
compiled vars:  !0 = $date, !1 = $mutable, !2 = $immutable
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   NEW                                              $3      'DateTime'
          1        SEND_VAL_EX                                              '2008-07-01T22%3A35%3A17%2B08%3A00'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $3
    6     4        INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
    7     5        SEND_VAL                                                 'Y-m-d+H%3Ai%3As'
    8     6        SEND_VAL                                                 '2008-07-01+00%3A00%3A00'
    9     7        INIT_METHOD_CALL                                         !0, 'getTimeZone'
          8        DO_FCALL                                      0  $6      
          9        SEND_VAR                                                 $6
         10        DO_FCALL                                      0  $7      
    6    11        ASSIGN                                                   !1, $7
   13    12        INIT_STATIC_METHOD_CALL                                  'DateTimeImmutable', 'createFromFormat'
   14    13        SEND_VAL                                                 'Y-m-d+H%3Ai%3As'
   15    14        SEND_VAL                                                 '2008-07-01+00%3A00%3A00'
   16    15        INIT_METHOD_CALL                                         !0, 'getTimeZone'
         16        DO_FCALL                                      0  $9      
         17        SEND_VAR                                                 $9
         18        DO_FCALL                                      0  $10     
   13    19        ASSIGN                                                   !2, $10
   19    20        INIT_FCALL                                               'var_dump'
   20    21        INIT_METHOD_CALL                                         !0, 'format'
         22        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsP'
         23        DO_FCALL                                      0  $12     
         24        INIT_ARRAY                                       ~13     $12, 'Date+Original'
   21    25        INIT_METHOD_CALL                                         !1, 'format'
         26        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsP'
         27        DO_FCALL                                      0  $14     
         28        ADD_ARRAY_ELEMENT                                ~13     $14, 'DateTime%3A%3AcreateFromFormat'
   22    29        INIT_METHOD_CALL                                         !2, 'format'
         30        SEND_VAL_EX                                              'Y-m-d%5CTH%3Ai%3AsP'
         31        DO_FCALL                                      0  $15     
         32        ADD_ARRAY_ELEMENT                                ~13     $15, 'DateTimeImmutable%3A%3AcreateFromFormat'
         33        SEND_VAL                                                 ~13
         34        DO_ICALL                                                 
   23    35      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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