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<?php $compare = array( '0 == "str"', '0 == "1"', '0 == ""', ); foreach ($compare as $code) { echo '(' . $code . ') = '; var_dump(eval('return (' . $code . ');')); }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 13
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 13
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
filename:       /in/430Ni
function name:  (null)
number of ops:  15
compiled vars:  !0 = $compare, !1 = $code
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    9     1      > FE_RESET_R                                       $3      !0, ->13
          2    > > FE_FETCH_R                                               $3, !1, ->13
   10     3    >   CONCAT                                           ~4      '%28', !1
          4        CONCAT                                           ~5      ~4, '%29+%3D+'
          5        ECHO                                                     ~5
   11     6        INIT_FCALL                                               'var_dump'
          7        CONCAT                                           ~6      'return+%28', !1
          8        CONCAT                                           ~7      ~6, '%29%3B'
          9        INCLUDE_OR_EVAL                                  $8      ~7, EVAL
         10        SEND_VAR                                                 $8
         11        DO_ICALL                                                 
    9    12      > JMP                                                      ->2
         13    >   FE_FREE                                                  $3
   12    14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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