3v4l.org

run code in 300+ PHP versions simultaneously
<?php $res='1'; if(!$res['id']) echo 'false';
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/LBJ6u
function name:  (null)
number of ops:  6
compiled vars:  !0 = $res
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '1'
    3     1        FETCH_DIM_R                                      ~2      !0, 'id'
          2        BOOL_NOT                                         ~3      ~2
          3      > JMPZ                                                     ~3, ->5
          4    >   ECHO                                                     'false'
          5    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.85 ms | 1383 KiB | 13 Q