3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "helloworld"; echo isset($string['check']['c']) ? 0 : 1;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 6
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/iXF3L
function name:  (null)
number of ops:  9
compiled vars:  !0 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'helloworld'
    3     1        FETCH_DIM_IS                                     ~2      !0, 'check'
          2        ISSET_ISEMPTY_DIM_OBJ                         0          ~2, 'c'
          3      > JMPZ                                                     ~3, ->6
          4    >   QM_ASSIGN                                        ~4      0
          5      > JMP                                                      ->7
          6    >   QM_ASSIGN                                        ~4      1
          7    >   ECHO                                                     ~4
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.28 ms | 1392 KiB | 13 Q