3v4l.org

run code in 300+ PHP versions simultaneously
<?php if(empty($a['b']['c'])){ echo 1; }else{ echo 2; }
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/vVYjD
function name:  (null)
number of ops:  7
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   FETCH_DIM_IS                                     ~1      !0, 'b'
          1        ISSET_ISEMPTY_DIM_OBJ                         1          ~1, 'c'
          2      > JMPZ                                                     ~2, ->5
    3     3    >   ECHO                                                     1
          4      > JMP                                                      ->6
    5     5    >   ECHO                                                     2
    6     6    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
169.55 ms | 1392 KiB | 13 Q