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<?php $a=array( 'x'=>'111', 'y'=>'22', ); $b=array( 'x'=>'333' ); var_dump($a+$b, $b+$a, array_merge($a,$b),array_merge($b,$a));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BtUIt
function name:  (null)
number of ops:  19
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
   10     1        ASSIGN                                                   !1, <array>
   14     2        INIT_FCALL                                               'var_dump'
          3        ADD                                              ~4      !0, !1
          4        SEND_VAL                                                 ~4
          5        ADD                                              ~5      !1, !0
          6        SEND_VAL                                                 ~5
          7        INIT_FCALL                                               'array_merge'
          8        SEND_VAR                                                 !0
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                         $6      
         11        SEND_VAR                                                 $6
         12        INIT_FCALL                                               'array_merge'
         13        SEND_VAR                                                 !1
         14        SEND_VAR                                                 !0
         15        DO_ICALL                                         $7      
         16        SEND_VAR                                                 $7
         17        DO_ICALL                                                 
         18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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