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

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/JBlgE
function name:  foo
number of ops:  6
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
    4     1        FETCH_W                      global              $1      'GLOBALS'
          2        FETCH_DIM_W                                      $2      $1, 'baz'
          3        ASSIGN_REF                                               !0, $2
    5     4        ASSIGN                                                   !0, 5
    6     5      > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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