3v4l.org

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

Function f:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3MKZg
function name:  f
number of ops:  3
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
    3     1        ECHO                                                     'works'
    4     2      > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
155.15 ms | 1397 KiB | 14 Q