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<?php function &x(&$y) { return $y; } $x = '123'; var_dump(x($x));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/oZCoU
function name:  (null)
number of ops:  8
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   ASSIGN                                                   !0, '123'
    8     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'x'
          3        SEND_REF                                                 !0
          4        DO_FCALL                                      0  $2      
          5        SEND_VAR                                                 $2
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Function x:
Finding entry points
Branch analysis from position: 0
Return found
filename:       /in/oZCoU
function name:  x
number of ops:  3
compiled vars:  !0 = $y
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1      > RETURN_BY_REF                                            !0
    5     2*     > RETURN_BY_REF                                            null

End of function x

Generated using Vulcan Logic Dumper, using php 8.0.0


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