3v4l.org

run code in 300+ PHP versions simultaneously
<?php $original = [ CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1 ]; $update = [ CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_2_0 ]; var_dump($original, $update, $original += $update, array_replace($original, $update));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ZUIIt
function name:  (null)
number of ops:  20
compiled vars:  !0 = $original, !1 = $update
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   FETCH_CONSTANT                                   ~2      'CURLOPT_HTTP_VERSION'
          1        FETCH_CONSTANT                                   ~3      'CURL_HTTP_VERSION_1_1'
          2        INIT_ARRAY                                       ~4      ~3, ~2
    3     3        ASSIGN                                                   !0, ~4
    8     4        FETCH_CONSTANT                                   ~6      'CURLOPT_HTTP_VERSION'
          5        FETCH_CONSTANT                                   ~7      'CURL_HTTP_VERSION_2_0'
          6        INIT_ARRAY                                       ~8      ~7, ~6
    7     7        ASSIGN                                                   !1, ~8
   11     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !0
         10        SEND_VAR                                                 !1
         11        ASSIGN_OP                                     1  ~10     !0, !1
         12        SEND_VAL                                                 ~10
         13        INIT_FCALL                                               'array_replace'
         14        SEND_VAR                                                 !0
         15        SEND_VAR                                                 !1
         16        DO_ICALL                                         $11     
         17        SEND_VAR                                                 $11
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
161.23 ms | 1386 KiB | 17 Q