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<?php $a = 1; $b = &$a; $c = 3; $d = &$c; $d = $b; echo "$a $b $c $d";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/8MUrm
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a, !1 = $b, !2 = $c, !3 = $d
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 1
    4     1        ASSIGN_REF                                               !1, !0
    5     2        ASSIGN                                                   !2, 3
    6     3        ASSIGN_REF                                               !3, !2
    8     4        ASSIGN                                                   !3, !1
   10     5        ROPE_INIT                                     7  ~10     !0
          6        ROPE_ADD                                      1  ~10     ~10, '+'
          7        ROPE_ADD                                      2  ~10     ~10, !1
          8        ROPE_ADD                                      3  ~10     ~10, '+'
          9        ROPE_ADD                                      4  ~10     ~10, !2
         10        ROPE_ADD                                      5  ~10     ~10, '+'
         11        ROPE_END                                      6  ~9      ~10, !3
         12        ECHO                                                     ~9
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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