3v4l.org

run code in 500+ PHP versions simultaneously
<?php $foo = 'bar'; if($foo['foo']){ echo 'true'; }else{ echo 'false'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 5
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Ck5Qk
function name:  (null)
number of ops:  7
compiled vars:  !0 = $foo
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, 'bar'
    3     1        FETCH_DIM_R                                          ~2      !0, 'foo'
          2      > JMPZ                                                         ~2, ->5
    4     3    >   ECHO                                                         'true'
    3     4      > JMP                                                          ->6
    6     5    >   ECHO                                                         'false'
    7     6    > > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
227.57 ms | 3332 KiB | 13 Q