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run code in 300+ PHP versions simultaneously
<?php $useragent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:37.0) Gecko/20100101 Firefox/37.0'; if(strpos('Firefox',$useragent) !== 'false') { echo 'firefox'; } else { echo 'nicht firefox'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9cNJm
function name:  (null)
number of ops:  11
compiled vars:  !0 = $useragent
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'Mozilla%2F5.0+%28Macintosh%3B+Intel+Mac+OS+X+10.10%3B+rv%3A37.0%29+Gecko%2F20100101+Firefox%2F37.0'
    3     1        INIT_FCALL                                               'strpos'
          2        SEND_VAL                                                 'Firefox'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5        IS_NOT_IDENTICAL                                         $2, 'false'
          6      > JMPZ                                                     ~3, ->9
    4     7    >   ECHO                                                     'firefox'
          8      > JMP                                                      ->10
    6     9    >   ECHO                                                     'nicht+firefox'
    7    10    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
189.49 ms | 1394 KiB | 15 Q