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<?php $include = preg_replace('/\.\.+\/\/*/', '', './../././asd'); echo $include ?>
based on nJnqa
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/0QhIr
function name:  (null)
number of ops:  8
compiled vars:  !0 = $include
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   INIT_FCALL                                               'preg_replace'
         1        SEND_VAL                                                 '%2F%5C.%5C.%2B%5C%2F%5C%2F%2A%2F'
         2        SEND_VAL                                                 ''
         3        SEND_VAL                                                 '.%2F..%2F.%2F.%2Fasd'
         4        DO_ICALL                                         $1      
         5        ASSIGN                                                   !0, $1
   3     6        ECHO                                                     !0
         7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.1.0