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<?php $r = new ReflectionFunction(function (?int $a): ?int {}); var_dump((string) $r->getParameters()[0]->getType()); var_dump((string) $r->getReturnType());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/c21Nq
function name:  (null)
number of ops:  21
compiled vars:  !0 = $r
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   NEW                                                  $1      'ReflectionFunction'
          1        DECLARE_LAMBDA_FUNCTION                              ~2      [0]
          2        SEND_VAL_EX                                                  ~2
          3        DO_FCALL                                          0          
          4        ASSIGN                                                       !0, $1
    4     5        INIT_FCALL                                                   'var_dump'
          6        INIT_METHOD_CALL                                             !0, 'getParameters'
          7        DO_FCALL                                          0  $5      
          8        FETCH_DIM_R                                          ~6      $5, 0
          9        INIT_METHOD_CALL                                             ~6, 'getType'
         10        DO_FCALL                                          0  $7      
         11        CAST                                              6  ~8      $7
         12        SEND_VAL                                                     ~8
         13        DO_ICALL                                                     
    5    14        INIT_FCALL                                                   'var_dump'
         15        INIT_METHOD_CALL                                             !0, 'getReturnType'
         16        DO_FCALL                                          0  $10     
         17        CAST                                              6  ~11     $10
         18        SEND_VAL                                                     ~11
         19        DO_ICALL                                                     
         20      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/c21Nq
function name:  {closure:/in/c21Nq:3}
number of ops:  3
compiled vars:  !0 = $a
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   RECV                                                 !0      
          1        VERIFY_RETURN_TYPE                                           
          2      > RETURN                                                       null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.5.0


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