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<?php echo PCRE_VERSION; preg_replace( '/\x{d83d}[\x{dc68}-\x{dc69}]/u' , '', '' );
based on CrPZ8
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vj9fm
function name:  (null)
number of ops:  7
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   ECHO                                                     '8.41+2017-07-05'
   3     1        INIT_FCALL                                               'preg_replace'
         2        SEND_VAL                                                 '%2F%5Cx%7Bd83d%7D%5B%5Cx%7Bdc68%7D-%5Cx%7Bdc69%7D%5D%2Fu'
         3        SEND_VAL                                                 ''
         4        SEND_VAL                                                 ''
         5        DO_ICALL                                                 
         6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0