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<?php function foo(callable $foo) { $foo(); } foo(function () { echo 'bar'; });
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Lpg80
function name:  (null)
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   INIT_FCALL                                               'foo'
          1        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FLpg80%3A7%240'
    9     2        SEND_VAL                                                 ~0
          3        DO_FCALL                                      0          
          4      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Lpg80
function name:  foo
number of ops:  4
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        INIT_DYNAMIC_CALL                                        !0
          2        DO_FCALL                                      0          
    5     3      > RETURN                                                   null

End of function foo

Function %00%7Bclosure%7D%2Fin%2FLpg80%3A7%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Lpg80
function name:  {closure}
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   ECHO                                                     'bar'
    9     1      > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FLpg80%3A7%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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