3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = Array( Array ( 0 => 'iPhone' ), Array ( 0 => 'iOS' ), Array ( 0 => 'Safari' ) ); $r = array_merge(...$a); print_r($r); echo '----- Using call_user_func_array ----- '; $flat = call_user_func_array('array_merge', array($a)); print_r($r);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/38Q5h
function name:  (null)
number of ops:  20
compiled vars:  !0 = $a, !1 = $r, !2 = $flat
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
   16     1        INIT_FCALL                                               'array_merge'
          2        SEND_UNPACK                                              !0
          3        CHECK_UNDEF_ARGS                                         
          4        DO_ICALL                                         $4      
          5        ASSIGN                                                   !1, $4
   17     6        INIT_FCALL                                               'print_r'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
   18     9        ECHO                                                     '-----+Using+call_user_func_array++-----+'
   19    10        INIT_FCALL                                               'array_merge'
         11        INIT_ARRAY                                       ~7      !0
         12        SEND_ARRAY                                               ~7
         13        CHECK_UNDEF_ARGS                                         
         14        DO_FCALL                                      1  $8      
         15        ASSIGN                                                   !2, $8
   20    16        INIT_FCALL                                               'print_r'
         17        SEND_VAR                                                 !1
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
146.68 ms | 1002 KiB | 15 Q