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<?php $str = "lol2"; echo "levier " . sbustr($str, -1) . ".";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hYNmS
function name:  (null)
number of ops:  9
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'lol2'
    5     1        INIT_FCALL_BY_NAME                                       'sbustr'
          2        SEND_VAR_EX                                              !0
          3        SEND_VAL_EX                                              -1
          4        DO_FCALL                                      0  $2      
          5        CONCAT                                           ~3      'levier+', $2
          6        CONCAT                                           ~4      ~3, '.'
          7        ECHO                                                     ~4
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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