3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3); if (is_null($a) && !is_array($a)) { echo "The variable is an empty array."; } else { echo "The if clause was not run"; } /* echo isset($a)?'true':'false'; */
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 3, Position 2 = 6
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
filename:       /in/bkBKD
function name:  (null)
number of ops:  11
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        TYPE_CHECK                                    2  ~2      !0
          2      > JMPZ_EX                                          ~2      ~2, ->6
          3    >   TYPE_CHECK                                  128  ~3      !0
          4        BOOL_NOT                                         ~4      ~3
          5        BOOL                                             ~2      ~4
          6    > > JMPZ                                                     ~2, ->9
          7    >   ECHO                                                     'The+variable+is+an+empty+array.'
          8      > JMP                                                      ->10
    7     9    >   ECHO                                                     'The+if+clause+was+not+run'
    9    10    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
144.06 ms | 1392 KiB | 13 Q