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<?php function foo($bar) { $bar = 5; } $arg = 1; call_user_func_array('foo', array(&$arg)); var_dump($arg);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dWMfe
function name:  (null)
number of ops:  10
compiled vars:  !0 = $arg
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    6     0  E >   ASSIGN                                                       !0, 1
    7     1        INIT_FCALL                                                   'foo'
          2        INIT_ARRAY                                           ~2      !0
          3        SEND_ARRAY                                                   ~2
          4        CHECK_UNDEF_ARGS                                             
          5        DO_FCALL                                          1          
    8     6        INIT_FCALL                                                   'var_dump'
          7        SEND_VAR                                                     !0
          8        DO_ICALL                                                     
          9      > RETURN                                                       1

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

End of function foo

Generated using Vulcan Logic Dumper, using php 8.5.0


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