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<?php class A { public function foo() { echo "hello world\n"; } } $closure = function(A $a) { return $a->foo(); }; $method = new ReflectionFunction($closure); var_dump($method);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/HUGVK
function name:  (null)
number of ops:  10
compiled vars:  !0 = $closure, !1 = $method
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FHUGVK%3A9%240'
          1        ASSIGN                                                   !0, ~2
   13     2        NEW                                              $4      'ReflectionFunction'
          3        SEND_VAR_EX                                              !0
          4        DO_FCALL                                      0          
          5        ASSIGN                                                   !1, $4
   14     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FHUGVK%3A9%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/HUGVK
function name:  {closure}
number of ops:  5
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   RECV                                             !0      
   10     1        INIT_METHOD_CALL                                         !0, 'foo'
          2        DO_FCALL                                      0  $1      
          3      > RETURN                                                   $1
   11     4*     > RETURN                                                   null

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

Class A:
Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/HUGVK
function name:  foo
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   ECHO                                                     'hello+world%0A'
    5     1      > RETURN                                                   null

End of function foo

End of class A.

Generated using Vulcan Logic Dumper, using php 8.0.0


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