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<?php var_dump(preg_match('/.*?((tableausoftware.com)|(tableau.com))$/', 'www.tableausoftware.com')); echo "\n"; var_dump(preg_match('/.*?((tableausoftware.com)|(tableau.com))$/', 'www.tableau.com')); var_dump(preg_match('/.*?((tableausoftware.com)|(tableau.com))$/', 'not.tableauprod.net')); var_dump(preg_match('/.*?((tableausoftware.com)|(tableau.com))$/', 'tab.local'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/DPkOS
function name:  (null)
number of ops:  30
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F.%2A%3F%28%28tableausoftware.com%29%7C%28tableau.com%29%29%24%2F'
          3        SEND_VAL                                                 'www.tableausoftware.com'
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
          7        ECHO                                                     '%0A'
    4     8        INIT_FCALL                                               'var_dump'
          9        INIT_FCALL                                               'preg_match'
         10        SEND_VAL                                                 '%2F.%2A%3F%28%28tableausoftware.com%29%7C%28tableau.com%29%29%24%2F'
         11        SEND_VAL                                                 'www.tableau.com'
         12        DO_ICALL                                         $2      
         13        SEND_VAR                                                 $2
         14        DO_ICALL                                                 
    5    15        INIT_FCALL                                               'var_dump'
         16        INIT_FCALL                                               'preg_match'
         17        SEND_VAL                                                 '%2F.%2A%3F%28%28tableausoftware.com%29%7C%28tableau.com%29%29%24%2F'
         18        SEND_VAL                                                 'not.tableauprod.net'
         19        DO_ICALL                                         $4      
         20        SEND_VAR                                                 $4
         21        DO_ICALL                                                 
    6    22        INIT_FCALL                                               'var_dump'
         23        INIT_FCALL                                               'preg_match'
         24        SEND_VAL                                                 '%2F.%2A%3F%28%28tableausoftware.com%29%7C%28tableau.com%29%29%24%2F'
         25        SEND_VAL                                                 'tab.local'
         26        DO_ICALL                                         $6      
         27        SEND_VAR                                                 $6
         28        DO_ICALL                                                 
         29      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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