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<?php global $hook; $hook = function ( &$reference ) { echo "ok\n"; }; $wrap = function() { $user = []; $params = [ &$user ]; $f = function () use ( $params ) { global $hook; call_user_func_array( $hook, $params ); }; echo "inner\n"; call_user_func( $f ); // works return $f; }; $f = $wrap(); echo "outer\n"; call_user_func( $f ); // fails
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XbNo3
function name:  (null)
number of ops:  12
compiled vars:  !0 = $hook, !1 = $wrap, !2 = $f
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   BIND_GLOBAL                                                  !0, 'hook'
    4     1        DECLARE_LAMBDA_FUNCTION                              ~3      [0]
          2        ASSIGN                                                       !0, ~3
    6     3        DECLARE_LAMBDA_FUNCTION                              ~5      [1]
          4        ASSIGN                                                       !1, ~5
   17     5        INIT_DYNAMIC_CALL                                            !1
          6        DO_FCALL                                          0  $7      
          7        ASSIGN                                                       !2, $7
   18     8        ECHO                                                         'outer%0A'
          9        INIT_USER_CALL                                    0          'call_user_func', !2
         10        DO_FCALL                                          0          
         11      > 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/XbNo3
function name:  {closure:/in/XbNo3:4}
number of ops:  3
compiled vars:  !0 = $reference
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E >   RECV                                                 !0      
          1        ECHO                                                         'ok%0A'
          2      > RETURN                                                       null

End of Dynamic Function 0

Dynamic Function 1
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XbNo3
function name:  {closure:/in/XbNo3:6}
number of ops:  11
compiled vars:  !0 = $user, !1 = $params, !2 = $f
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    7     0  E >   ASSIGN                                                       !0, <array>
    8     1        INIT_ARRAY                                           ~4      !0
          2        ASSIGN                                                       !1, ~4
    9     3        DECLARE_LAMBDA_FUNCTION                              ~6      [0]
          4        BIND_LEXICAL                                                 ~6, !1
          5        ASSIGN                                                       !2, ~6
   13     6        ECHO                                                         'inner%0A'
          7        INIT_USER_CALL                                    0          'call_user_func', !2
          8        DO_FCALL                                          0          
   14     9      > RETURN                                                       !2
   15    10*     > RETURN                                                       null


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XbNo3
function name:  {closure:{closure:/in/XbNo3:6}:9}
number of ops:  7
compiled vars:  !0 = $params, !1 = $hook
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    9     0  E >   BIND_STATIC                                                  !0
   10     1        BIND_GLOBAL                                                  !1, 'hook'
   11     2        INIT_USER_CALL                                    0          'call_user_func_array', !1
          3        SEND_ARRAY                                                   !0
          4        CHECK_UNDEF_ARGS                                             
          5        DO_FCALL                                          1          
   12     6      > RETURN                                                       null

End of Dynamic Function 0

End of Dynamic Function 1

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