3v4l.org

run code in 300+ PHP versions simultaneously
<?php $num = 0; function toggleNumber( $num ) { return $num ^= 1; } echo toggleNumber( $num );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/h7TAe
function name:  (null)
number of ops:  6
compiled vars:  !0 = $num
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 0
    8     1        INIT_FCALL                                               'togglenumber'
          2        SEND_VAR                                                 !0
          3        DO_FCALL                                      0  $2      
          4        ECHO                                                     $2
          5      > RETURN                                                   1

Function togglenumber:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/h7TAe
function name:  toggleNumber
number of ops:  4
compiled vars:  !0 = $num
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
    5     1        ASSIGN_OP                                    11  ~1      !0, 1
          2      > RETURN                                                   ~1
    6     3*     > RETURN                                                   null

End of function togglenumber

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
186.42 ms | 1451 KiB | 14 Q