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<?php $u=array('a'=>1); $p=array('a'=>2); var_dump($p+$u);
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/43gmW
function name:  (null)
number of ops:  7
compiled vars:  !0 = $u, !1 = $p
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   ASSIGN                                                   !0, <array>
   3     1        ASSIGN                                                   !1, <array>
   4     2        INIT_FCALL                                               'var_dump'
         3        ADD                                              ~4      !1, !0
         4        SEND_VAL                                                 ~4
         5        DO_ICALL                                                 
         6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.2.0