3v4l.org

run code in 300+ PHP versions simultaneously
<?php function abc(&$a) { ++$a; } $a = 0; call_user_func_array('abc', array(&$a)); echo $a;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/UWI3c
function name:  (null)
number of ops:  8
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   ASSIGN                                                   !0, 0
   12     1        INIT_FCALL                                               'abc'
          2        INIT_ARRAY                                       ~2      !0
          3        SEND_ARRAY                                               ~2
          4        CHECK_UNDEF_ARGS                                         
          5        DO_FCALL                                      0          
   13     6        ECHO                                                     !0
          7      > RETURN                                                   1

Function abc:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/UWI3c
function name:  abc
number of ops:  3
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    5     1        PRE_INC                                                  !0
    6     2      > RETURN                                                   null

End of function abc

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
151.8 ms | 1401 KiB | 14 Q