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<?php class ZunicoreNull { public function __toString() { // return an empty string that in PHP evaluates to false return FALSE; } } $null = new ZunicoreNull; if ($null) { print "is true"; } else { print "is false"; }
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/EpAVp
function name:  (null)
number of ops:  9
compiled vars:  !0 = $null
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_CLASS                                            'zunicorenull'
   11     1        NEW                                              $1      'ZunicoreNull'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $1
   13     4      > JMPZ                                                     !0, ->7
   14     5    >   ECHO                                                     'is+true'
          6      > JMP                                                      ->8
   17     7    >   ECHO                                                     'is+false'
   18     8    > > RETURN                                                   1

Class ZunicoreNull:
Function __tostring:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/EpAVp
function name:  __toString
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   VERIFY_RETURN_TYPE                               ~0      <false>
          1      > RETURN                                                   ~0
    8     2*       VERIFY_RETURN_TYPE                                       
          3*     > RETURN                                                   null

End of function __tostring

End of class ZunicoreNull.

Generated using Vulcan Logic Dumper, using php 8.0.0


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