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<?php ini_set('display_errors', 1); error_reporting(E_ALL); echo '#+++++++++++++++++++++++++++++++++++#' . PHP_EOL; echo '# Checking if a constant is defined #' . PHP_EOL; echo '# always retuns (bool)false in PHP. #' . PHP_EOL; echo '# Even if it has been defined! #' . PHP_EOL; echo '#+++++++++++++++++++++++++++++++++++#' . PHP_EOL; echo 'Testing on PHP version ' . PHP_VERSION . PHP_EOL . PHP_EOL; echo 'Result of `echo __FILE__`: ' . PHP_EOL; echo __FILE__; echo PHP_EOL . PHP_EOL; echo 'Okay, looks like __FILE__ is defined.' . PHP_EOL; echo 'Now let\'s see what `if ( defined(\'__FILE__\') )` returns:' . PHP_EOL; var_dump(defined('__FILE__'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/S6ZY6
function name:  (null)
number of ops:  23
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'ini_set'
          1        SEND_VAL                                                 'display_errors'
          2        SEND_VAL                                                 1
          3        DO_ICALL                                                 
    3     4        INIT_FCALL                                               'error_reporting'
          5        SEND_VAL                                                 32767
          6        DO_ICALL                                                 
    5     7        ECHO                                                     '%23%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%23%0A'
    6     8        ECHO                                                     '%23+Checking+if+a+constant+is+defined+%23%0A'
    7     9        ECHO                                                     '%23+always+retuns+%28bool%29false+in+PHP.+%23%0A'
    8    10        ECHO                                                     '%23+Even+if+it+has+been+defined%21++++++%23%0A'
    9    11        ECHO                                                     '%23%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%2B%23%0A'
   11    12        ECHO                                                     'Testing+on+PHP+version+8.0.0%0A%0A'
   13    13        ECHO                                                     'Result+of+%60echo+__FILE__%60%3A+%0A'
   14    14        ECHO                                                     '%2Fin%2FS6ZY6'
   16    15        ECHO                                                     '%0A%0A'
   18    16        ECHO                                                     'Okay%2C+looks+like+__FILE__+is+defined.%0A'
   19    17        ECHO                                                     'Now+let%27s+see+what+%60if+%28+defined%28%27__FILE__%27%29+%29%60+returns%3A%0A'
   21    18        INIT_FCALL                                               'var_dump'
         19        DEFINED                                          ~2      '__FILE__'
         20        SEND_VAL                                                 ~2
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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