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<?php function add(int $a, int $b): int { return $a + $b; } $c = Closure::fromCallable('add'); $r = new ReflectionFunction($c); echo $r; $c = fn(...$args) => add(...$args); $r = new ReflectionFunction($c); echo $r;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XBOmJ
function name:  (null)
number of ops:  17
compiled vars:  !0 = $c, !1 = $r
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   INIT_STATIC_METHOD_CALL                                  'Closure', 'fromCallable'
          1        SEND_VAL                                                 'add'
          2        DO_FCALL                                      0  $2      
          3        ASSIGN                                                   !0, $2
    6     4        NEW                                              $4      'ReflectionFunction'
          5        SEND_VAR_EX                                              !0
          6        DO_FCALL                                      0          
          7        ASSIGN                                                   !1, $4
    7     8        ECHO                                                     !1
    9     9        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FXBOmJ%3A9%240'
         10        ASSIGN                                                   !0, ~7
   10    11        NEW                                              $9      'ReflectionFunction'
         12        SEND_VAR_EX                                              !0
         13        DO_FCALL                                      0          
         14        ASSIGN                                                   !1, $9
   11    15        ECHO                                                     !1
   12    16      > RETURN                                                   1

Function add:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XBOmJ
function name:  add
number of ops:  7
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        ADD                                              ~2      !0, !1
          3        VERIFY_RETURN_TYPE                                       ~2
          4      > RETURN                                                   ~2
          5*       VERIFY_RETURN_TYPE                                       
          6*     > RETURN                                                   null

End of function add

Function %00%7Bclosure%7D%2Fin%2FXBOmJ%3A9%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XBOmJ
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $args
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   RECV_VARIADIC                                    !0      
          1        INIT_FCALL                                               'add'
          2        SEND_UNPACK                                              !0
          3        CHECK_UNDEF_ARGS                                         
          4        DO_FCALL                                      1  $1      
          5      > RETURN                                                   $1
          6*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FXBOmJ%3A9%240

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