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<?php $f = function (X&Y $foo = null) {}; $r = new ReflectionParameter($f, 0); var_dump($r->getType()->allowsNull());
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/aURFN
function name:  (null)
number of ops:  15
compiled vars:  !0 = $f, !1 = $r
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_LAMBDA_FUNCTION                          ~2      [0]
          1        ASSIGN                                                   !0, ~2
    5     2        NEW                                              $4      'ReflectionParameter'
          3        SEND_VAR_EX                                              !0
          4        SEND_VAL_EX                                              0
          5        DO_FCALL                                      0          
          6        ASSIGN                                                   !1, $4
    7     7        INIT_FCALL                                               'var_dump'
          8        INIT_METHOD_CALL                                         !1, 'getType'
          9        DO_FCALL                                      0  $7      
         10        INIT_METHOD_CALL                                         $7, 'allowsNull'
         11        DO_FCALL                                      0  $8      
         12        SEND_VAR                                                 $8
         13        DO_ICALL                                                 
         14      > 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/aURFN
function name:  {closure}
number of ops:  2
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV_INIT                                        !0      null
          1      > RETURN                                                   null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.0.0


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