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<?php $test = fopen('http://de.wikipedia.org/wiki/Test', 'w+'); if ($test) { echo 'works'; } else { echo 'nope'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Aa988
function name:  (null)
number of ops:  10
compiled vars:  !0 = $test
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'fopen'
          1        SEND_VAL                                                 'http%3A%2F%2Fde.wikipedia.org%2Fwiki%2FTest'
          2        SEND_VAL                                                 'w%2B'
          3        DO_ICALL                                         $1      
          4        ASSIGN                                                   !0, $1
    4     5      > JMPZ                                                     !0, ->8
    5     6    >   ECHO                                                     'works'
          7      > JMP                                                      ->9
    8     8    >   ECHO                                                     'nope'
    9     9    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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