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<?php $s = '&lt;t&gt;'; var_dump(substr($s, strlen($s) - 4, 4) === '&gt;'); var_dump(substr($s, strlen($s) - 4, 4));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/HFZgL
function name:  (null)
number of ops:  23
compiled vars:  !0 = $s
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%26lt%3Bt%26gt%3B'
    3     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'substr'
          3        SEND_VAR                                                 !0
          4        STRLEN                                           ~2      !0
          5        SUB                                              ~3      ~2, 4
          6        SEND_VAL                                                 ~3
          7        SEND_VAL                                                 4
          8        DO_ICALL                                         $4      
          9        IS_IDENTICAL                                     ~5      $4, '%26gt%3B'
         10        SEND_VAL                                                 ~5
         11        DO_ICALL                                                 
    4    12        INIT_FCALL                                               'var_dump'
         13        INIT_FCALL                                               'substr'
         14        SEND_VAR                                                 !0
         15        STRLEN                                           ~7      !0
         16        SUB                                              ~8      ~7, 4
         17        SEND_VAL                                                 ~8
         18        SEND_VAL                                                 4
         19        DO_ICALL                                         $9      
         20        SEND_VAR                                                 $9
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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