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<?php $v = 18; function f( &$p ) { $p = 36; return $p; } echo call_user_func('f', $v); // error: expecting reference variable
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Ba7qZ
function name:  (null)
number of ops:  6
compiled vars:  !0 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 18
    7     1        INIT_FCALL                                               'f'
          2        SEND_USER                                                !0
          3        DO_FCALL                                      0  $2      
          4        ECHO                                                     $2
          5      > RETURN                                                   1

Function f:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Ba7qZ
function name:  f
number of ops:  4
compiled vars:  !0 = $p
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        ASSIGN                                                   !0, 36
    5     2      > RETURN                                                   !0
    6     3*     > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 8.0.0


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