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<?php echo \getcwd(); \mkdir('/tmp/foo'); \chdir('/tmp/foo'); \rmdir('/tmp/foo'); // Outputs: / (incorrect) echo \getcwd(); echo PHP_EOL; // Outputs: false (correct) echo \realpath(''); echo PHP_EOL; // Crash echo \realpath('.'); echo \realpath('./');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/jWhgB
function name:  (null)
number of ops:  30
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'getcwd'
          1        DO_ICALL                                             $0      
          2        ECHO                                                         $0
    5     3        INIT_FCALL                                                   'mkdir'
          4        SEND_VAL                                                     '%2Ftmp%2Ffoo'
          5        DO_ICALL                                                     
    6     6        INIT_FCALL                                                   'chdir'
          7        SEND_VAL                                                     '%2Ftmp%2Ffoo'
          8        DO_ICALL                                                     
    7     9        INIT_FCALL                                                   'rmdir'
         10        SEND_VAL                                                     '%2Ftmp%2Ffoo'
         11        DO_ICALL                                                     
   10    12        INIT_FCALL                                                   'getcwd'
         13        DO_ICALL                                             $4      
         14        ECHO                                                         $4
   11    15        ECHO                                                         '%0A'
   14    16        INIT_FCALL                                                   'realpath'
         17        SEND_VAL                                                     ''
         18        DO_ICALL                                             $5      
         19        ECHO                                                         $5
   15    20        ECHO                                                         '%0A'
   18    21        INIT_FCALL                                                   'realpath'
         22        SEND_VAL                                                     '.'
         23        DO_ICALL                                             $6      
         24        ECHO                                                         $6
   19    25        INIT_FCALL                                                   'realpath'
         26        SEND_VAL                                                     '.%2F'
         27        DO_ICALL                                             $7      
         28        ECHO                                                         $7
         29      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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