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<?php $a = 1; $b = $a + $a++; echo $b.PHP_EOL; $a = 1; @ $b = $a + $a++; echo $b.PHP_EOL;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Rv0tY
function name:  (null)
number of ops:  15
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, 1
    3     1        POST_INC                                             ~3      !0
          2        ADD                                                  ~4      !0, ~3
          3        ASSIGN                                                       !1, ~4
    4     4        CONCAT                                               ~6      !1, '%0A'
          5        ECHO                                                         ~6
    5     6        ASSIGN                                                       !0, 1
    6     7        BEGIN_SILENCE                                        ~8      
          8        POST_INC                                             ~9      !0
          9        ADD                                                  ~10     !0, ~9
         10        ASSIGN                                                       !1, ~10
         11        END_SILENCE                                                  ~8
    7    12        CONCAT                                               ~12     !1, '%0A'
         13        ECHO                                                         ~12
         14      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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