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<?php function foo() { return null; } if (empty($res = foo())) { echo 'it works'; } else { echo 'it fails'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 7
Branch analysis from position: 5
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/G1kiC
function name:  (null)
number of ops:  9
compiled vars:  !0 = $res
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   INIT_FCALL                                               'foo'
          1        DO_FCALL                                      0  $1      
          2        ASSIGN                                           ~2      !0, $1
          3        BOOL_NOT                                         ~3      ~2
          4      > JMPZ                                                     ~3, ->7
    8     5    >   ECHO                                                     'it+works'
          6      > JMP                                                      ->8
   10     7    >   ECHO                                                     'it+fails'
   11     8    > > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/G1kiC
function name:  foo
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E > > RETURN                                                   null
    5     1*     > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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