3v4l.org

run code in 300+ PHP versions simultaneously
<?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/lGdVP
function name:  (null)
number of ops:  22
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        FETCH_CONSTANT                                   ~4      'b'
          4        ADD                                              ~5      !0, ~4
          5        SEND_VAL                                                 ~5
          6        ADD                                              ~6      !1, !0
          7        SEND_VAL                                                 ~6
          8        INIT_FCALL                                               'array_merge'
          9        SEND_VAR                                                 !0
         10        FETCH_CONSTANT                                   ~7      'b'
         11        SEND_VAL                                                 ~7
         12        DO_ICALL                                         $8      
         13        SEND_VAR                                                 $8
         14        INIT_FCALL                                               'array_merge'
         15        SEND_VAR                                                 !1
         16        FETCH_CONSTANT                                   ~9      'a'
         17        SEND_VAL                                                 ~9
         18        DO_ICALL                                         $10     
         19        SEND_VAR                                                 $10
         20        DO_ICALL                                                 
         21      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
150.59 ms | 1395 KiB | 17 Q