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<?php class DTO { public function __construct( public array $prop = [] ) {} } $default = (new ReflectionProperty(DTO::class, 'prop'))->getDefaultValue(); var_dump($default); // Здесь NULL
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/r9iv4
function name:  (null)
number of ops:  11
compiled vars:  !0 = $default
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   10     0  E >   NEW                                                  $1      'ReflectionProperty'
          1        SEND_VAL_EX                                                  'DTO'
          2        SEND_VAL_EX                                                  'prop'
          3        DO_FCALL                                          0          
          4        INIT_METHOD_CALL                                             $1, 'getDefaultValue'
          5        DO_FCALL                                          0  $3      
          6        ASSIGN                                                       !0, $3
   12     7        INIT_FCALL                                                   'var_dump'
          8        SEND_VAR                                                     !0
          9        DO_ICALL                                                     
         10      > RETURN                                                       1

Class DTO:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/r9iv4
function name:  __construct
number of ops:  4
compiled vars:  !0 = $prop
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    6     0  E >   RECV_INIT                                            !0      <array>
          1        ASSIGN_OBJ                                                   'prop'
          2        OP_DATA                                                      !0
    7     3      > RETURN                                                       null

End of function __construct

End of class DTO.

Generated using Vulcan Logic Dumper, using php 8.5.0


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