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<?php var_dump (preg_match('/robot|spider|crawler|curl|^$/i', 'Mozilla/5.0 robot(Macintosh; Intel Mac OS X 10_9_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.94 Safari/537.36'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sBEvU
function name:  (null)
number of ops:  8
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                                                 '%2Frobot%7Cspider%7Ccrawler%7Ccurl%7C%5E%24%2Fi'
          3        SEND_VAL                                                 'Mozilla%2F5.0+robot%28Macintosh%3B+Intel+Mac+OS+X+10_9_4%29+AppleWebKit%2F537.36+%28KHTML%2C+like+Gecko%29+Chrome%2F37.0.2062.94+Safari%2F537.36'
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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