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<?php $a = null; $b = null; $c = ($a && $b) !== null; var_dump($c);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 3, Position 2 = 4
Branch analysis from position: 3
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 4
filename:       /in/bH27N
function name:  (null)
number of ops:  10
compiled vars:  !0 = $a, !1 = $b, !2 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, null
    3     1        ASSIGN                                                   !1, null
    5     2      > JMPZ_EX                                          ~5      !0, ->4
          3    >   BOOL                                             ~5      !1
          4    >   TYPE_CHECK                                  1020  ~6      ~5
          5        ASSIGN                                                   !2, ~6
    6     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !2
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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