3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array("key" => 3); if (isset($a["key"])) { $a["key2"] = "val2"; }
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 = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/vhPK8
function name:  (null)
number of ops:  6
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ISSET_ISEMPTY_DIM_OBJ                         0          !0, 'key'
          2      > JMPZ                                                     ~2, ->5
    5     3    >   ASSIGN_DIM                                               !0, 'key2'
          4        OP_DATA                                                  'val2'
    6     5    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
144.83 ms | 1392 KiB | 13 Q