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<?php var_dump(0e100132199235687421930375421091 == md5(urldecode('%02%a27%84')));
based on BSHLp
Finding entry points
Branch analysis from position: 0
Jump found. (Code = 62) Position 1 = -2
filename:       /in/NK5hp
function name:  (null)
number of ops:  11
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   INIT_FCALL                                               'var_dump'
         1        INIT_FCALL                                               'md5'
         2        INIT_FCALL                                               'urldecode'
         3        SEND_VAL                                                 '%2502%25a27%2584'
         4        DO_ICALL                                         $0      
         5        SEND_VAR                                                 $0
         6        DO_ICALL                                         $1      
         7        IS_EQUAL                                         ~2      0, $1
         8        SEND_VAL                                                 ~2
         9        DO_ICALL                                                 
        10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0