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<?php ini_set('serialize_precision', 8); $expected = '1487285080.123456'; $date = DateTimeImmutable::createFromFormat('U.u', $expected); var_dump($expected, json_encode((float) $date->format('U.u'))); ini_set('serialize_precision', 16); $expected = '1487285080.123456'; $date = DateTimeImmutable::createFromFormat('U.u', $expected); var_dump($expected, json_encode((float) $date->format('U.u')));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/UGuFv
function name:  (null)
number of ops:  43
compiled vars:  !0 = $expected, !1 = $date
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'ini_set'
          1        SEND_VAL                                                     'serialize_precision'
          2        SEND_VAL                                                     8
          3        DO_ICALL                                                     
    5     4        ASSIGN                                                       !0, '1487285080.123456'
    6     5        INIT_STATIC_METHOD_CALL                                      'DateTimeImmutable', 'createFromFormat'
          6        SEND_VAL                                                     'U.u'
          7        SEND_VAR                                                     !0
          8        DO_FCALL                                          0  $4      
          9        ASSIGN                                                       !1, $4
    8    10        INIT_FCALL                                                   'var_dump'
         11        SEND_VAR                                                     !0
         12        INIT_FCALL                                                   'json_encode'
         13        INIT_METHOD_CALL                                             !1, 'format'
         14        SEND_VAL_EX                                                  'U.u'
         15        DO_FCALL                                          0  $6      
         16        CAST                                              5  ~7      $6
         17        SEND_VAL                                                     ~7
         18        DO_ICALL                                             $8      
         19        SEND_VAR                                                     $8
         20        DO_ICALL                                                     
   10    21        INIT_FCALL                                                   'ini_set'
         22        SEND_VAL                                                     'serialize_precision'
         23        SEND_VAL                                                     16
         24        DO_ICALL                                                     
   12    25        ASSIGN                                                       !0, '1487285080.123456'
   13    26        INIT_STATIC_METHOD_CALL                                      'DateTimeImmutable', 'createFromFormat'
         27        SEND_VAL                                                     'U.u'
         28        SEND_VAR                                                     !0
         29        DO_FCALL                                          0  $12     
         30        ASSIGN                                                       !1, $12
   15    31        INIT_FCALL                                                   'var_dump'
         32        SEND_VAR                                                     !0
         33        INIT_FCALL                                                   'json_encode'
         34        INIT_METHOD_CALL                                             !1, 'format'
         35        SEND_VAL_EX                                                  'U.u'
         36        DO_FCALL                                          0  $14     
         37        CAST                                              5  ~15     $14
         38        SEND_VAL                                                     ~15
         39        DO_ICALL                                             $16     
         40        SEND_VAR                                                     $16
         41        DO_ICALL                                                     
         42      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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