3v4l.org

run code in 300+ PHP versions simultaneously
<?php function myfunction(&$myvalue = null) { /* ... */ } $fff = 1; myfunction($fff); var_dump($fff); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MHLuk
function name:  (null)
number of ops:  8
compiled vars:  !0 = $fff
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   ASSIGN                                                   !0, 1
    7     1        INIT_FCALL                                               'myfunction'
          2        SEND_REF                                                 !0
          3        DO_FCALL                                      0          
    8     4        INIT_FCALL                                               'var_dump'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
    9     7      > RETURN                                                   1

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

End of function myfunction

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.36 ms | 1396 KiB | 16 Q