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<?php function f(...$args) { var_dump($args); } function test() { $data = [ 1 => 20, 0 => 10]; f(...$data); } test();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lOTZQ
function name:  (null)
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   INIT_FCALL                                               'test'
          1        DO_FCALL                                      0          
          2      > RETURN                                                   1

Function f:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lOTZQ
function name:  f
number of ops:  5
compiled vars:  !0 = $args
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV_VARIADIC                                    !0      
    4     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    5     4      > RETURN                                                   null

End of function f

Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lOTZQ
function name:  test
number of ops:  6
compiled vars:  !0 = $data
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   ASSIGN                                                   !0, <array>
    9     1        INIT_FCALL                                               'f'
          2        SEND_UNPACK                                              !0
          3        CHECK_UNDEF_ARGS                                         
          4        DO_FCALL                                      1          
   10     5      > RETURN                                                   null

End of function test

Generated using Vulcan Logic Dumper, using php 8.0.0


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