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<?php function not($f) { return function () use ($f) { return !call_user_func_array($f, func_get_args()); }; } var_dump(array_filter([null, 0, 1, 2], not("is_null")));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0S8vp
function name:  (null)
number of ops:  11
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'array_filter'
          2        SEND_VAL                                                 <array>
          3        INIT_FCALL                                               'not'
          4        SEND_VAL                                                 'is_null'
          5        DO_FCALL                                      0  $0      
          6        SEND_VAR                                                 $0
          7        DO_ICALL                                         $1      
          8        SEND_VAR                                                 $1
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Function not:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0S8vp
function name:  not
number of ops:  5
compiled vars:  !0 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2F0S8vp%3A4%240'
          2        BIND_LEXICAL                                             ~1, !0
    6     3      > RETURN                                                   ~1
    7     4*     > RETURN                                                   null

End of function not

Function %00%7Bclosure%7D%2Fin%2F0S8vp%3A4%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0S8vp
function name:  {closure}
number of ops:  9
compiled vars:  !0 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   BIND_STATIC                                              !0
    5     1        INIT_USER_CALL                                0          'call_user_func_array', !0
          2        FUNC_GET_ARGS                                    ~1      
          3        SEND_ARRAY                                               ~1
          4        CHECK_UNDEF_ARGS                                         
          5        DO_FCALL                                      0  $2      
          6        BOOL_NOT                                         ~3      $2
          7      > RETURN                                                   ~3
    6     8*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2F0S8vp%3A4%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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