3v4l.org

run code in 300+ PHP versions simultaneously
<?php function add_four(&$bar){ $bar += 4; return $bar; } $foo = 1; $too = add_four($foo); $foo; print $foo.'-'.$to;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qtsfG
function name:  (null)
number of ops:  9
compiled vars:  !0 = $foo, !1 = $too, !2 = $to
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   ASSIGN                                                   !0, 1
    8     1        INIT_FCALL                                               'add_four'
          2        SEND_REF                                                 !0
          3        DO_FCALL                                      0  $4      
          4        ASSIGN                                                   !1, $4
   10     5        CONCAT                                           ~6      !0, '-'
          6        CONCAT                                           ~7      ~6, !2
          7        ECHO                                                     ~7
          8      > RETURN                                                   1

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

End of function add_four

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
151.73 ms | 1397 KiB | 14 Q