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<?php function F(&$r) { $r++; } $r = 1; f(f($r)); echo $r;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/eBj2t
function name:  (null)
number of ops:  9
compiled vars:  !0 = $r
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   ASSIGN                                                   !0, 1
    7     1        INIT_FCALL                                               'f'
          2        INIT_FCALL                                               'f'
          3        SEND_REF                                                 !0
          4        DO_FCALL                                      0  $2      
          5        SEND_VAR_NO_REF                               0          $2
          6        DO_FCALL                                      0          
    8     7        ECHO                                                     !0
          8      > RETURN                                                   1

Function f:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/eBj2t
function name:  F
number of ops:  3
compiled vars:  !0 = $r
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
    4     1        PRE_INC                                                  !0
    5     2      > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 8.0.0


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