3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = ['a' => 1, 'b' => 2]; $arr2 = ['c' => 3, 'd' => 4]; array_push($arr1, ...$arr2); var_export($arr1);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BHPSt
function name:  (null)
number of ops:  11
compiled vars:  !0 = $arr1, !1 = $arr2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, <array>
    5     2        INIT_FCALL                                               'array_push'
          3        SEND_REF                                                 !0
          4        SEND_UNPACK                                              !1
          5        CHECK_UNDEF_ARGS                                         
          6        DO_ICALL                                                 
    6     7        INIT_FCALL                                               'var_export'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
158.93 ms | 1398 KiB | 17 Q