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<?php $a = 5; $b = &$a; echo ++$a.$b++;
Finding entry points
Branch analysis from position: 0
Jump found. (Code = 62) Position 1 = -2
filename:       /in/06anE
function name:  (null)
number of ops:  7
compiled vars:  !0 = $a, !1 = $b
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   ASSIGN                                                   !0, 5
   4     1        ASSIGN_REF                                               !1, !0
   5     2        PRE_INC                                          $4      !0
         3        POST_INC                                         ~5      !1
         4        CONCAT                                           ~6      $4, ~5
         5        ECHO                                                     ~6
         6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.2.0