3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f($one = null, $two = null) { var_dump($one, $two); } f($two = 'foo'); var_dump($two);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MC43D
function name:  (null)
number of ops:  8
compiled vars:  !0 = $two
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   INIT_FCALL                                               'f'
          1        ASSIGN                                           ~1      !0, 'foo'
          2        SEND_VAL                                                 ~1
          3        DO_FCALL                                      0          
    7     4        INIT_FCALL                                               'var_dump'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Function f:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MC43D
function name:  f
number of ops:  7
compiled vars:  !0 = $one, !1 = $two
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV_INIT                                        !0      null
          1        RECV_INIT                                        !1      null
    3     2        INIT_FCALL                                               'var_dump'
          3        SEND_VAR                                                 !0
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                                 
    4     6      > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
167.48 ms | 1388 KiB | 16 Q