3v4l.org

run code in 500+ PHP versions simultaneously
<?php $username = ''; $first_letter = $username[0];
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/b00Jd
function name:  (null)
number of ops:  4
compiled vars:  !0 = $username, !1 = $first_letter
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, ''
    5     1        FETCH_DIM_R                                          ~3      !0, 0
          2        ASSIGN                                                       !1, ~3
          3      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
181.05 ms | 2002 KiB | 13 Q